Investigation on Laser Welding of Al Ribbon to Cu Sheet: Weldability, Microstructure, and Mechanical and Electrical Properties

The pulsed laser welding of Al ribbon to Cu sheet was investigated for the electrical interconnections in power electronic modules. The various experimental conditions with the different laser powers, scan speeds, and heat inputs were employed for obtaining the defect-free Al/Cu joints. During the A...
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Autor*in:	Won-Sang Shin [verfasserIn] Dae-Won Cho [verfasserIn] Donghyuck Jung [verfasserIn] Heeshin Kang [verfasserIn] Jeng O Kim [verfasserIn] Yoon-Jun Kim [verfasserIn] Changkyoo Park [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2021

Schlagwörter:	laser welding aluminum copper ribbon bonding intermetallic compounds

Übergeordnetes Werk:	In: Metals - MDPI AG, 2012, 11(2021), 5, p 831
Übergeordnetes Werk:	volume:11 ; year:2021 ; number:5, p 831

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.3390/met11050831

Katalog-ID:	DOAJ05562104X

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520			\|a The pulsed laser welding of Al ribbon to Cu sheet was investigated for the electrical interconnections in power electronic modules. The various experimental conditions with the different laser powers, scan speeds, and heat inputs were employed for obtaining the defect-free Al/Cu joints. During the Al/Cu laser welding, the intermetallic compounds were formed in the welding zone. An electron probe microanalyzer and transmission electron microscopy confirmed the phases of intermetallic compounds, which were found to be Al<sub<4</sub<Cu<sub<9</sub<, Al<sub<2</sub<Cu, AlCu, etc. The computational fluid dynamics simulation revealed that the Marangoni effect induced the circulation of the molten pool, resulting in the mixture of Al and Cu and the formation of swirl-like structures at the Al/Cu joints. The tensile shear strengths and electrical resistances of the Al/Cu joints were measured, and they showed a strong correlation with the welding area. A decrease in mechanical strength and an increase in electrical resistance were measured with increasing the welding area of Al/Cu joints. Moreover, the process window for the defect-free Al/Cu joints was developed, and the experimental conditions for Al/Cu laser braze-welding were examined to minimize the intermetallic compounds formation at the Al/Cu joints.
650		4	\|a laser welding
650		4	\|a aluminum
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650		4	\|a intermetallic compounds
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allfields	10.3390/met11050831 doi (DE-627)DOAJ05562104X (DE-599)DOAJ2ea85d57298c45a085cf1583158e6283 DE-627 ger DE-627 rakwb eng TN1-997 Won-Sang Shin verfasserin aut Investigation on Laser Welding of Al Ribbon to Cu Sheet: Weldability, Microstructure, and Mechanical and Electrical Properties 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The pulsed laser welding of Al ribbon to Cu sheet was investigated for the electrical interconnections in power electronic modules. The various experimental conditions with the different laser powers, scan speeds, and heat inputs were employed for obtaining the defect-free Al/Cu joints. During the Al/Cu laser welding, the intermetallic compounds were formed in the welding zone. An electron probe microanalyzer and transmission electron microscopy confirmed the phases of intermetallic compounds, which were found to be Al<sub<4</sub<Cu<sub<9</sub<, Al<sub<2</sub<Cu, AlCu, etc. The computational fluid dynamics simulation revealed that the Marangoni effect induced the circulation of the molten pool, resulting in the mixture of Al and Cu and the formation of swirl-like structures at the Al/Cu joints. The tensile shear strengths and electrical resistances of the Al/Cu joints were measured, and they showed a strong correlation with the welding area. A decrease in mechanical strength and an increase in electrical resistance were measured with increasing the welding area of Al/Cu joints. Moreover, the process window for the defect-free Al/Cu joints was developed, and the experimental conditions for Al/Cu laser braze-welding were examined to minimize the intermetallic compounds formation at the Al/Cu joints. laser welding aluminum copper ribbon bonding intermetallic compounds Mining engineering. Metallurgy Dae-Won Cho verfasserin aut Donghyuck Jung verfasserin aut Heeshin Kang verfasserin aut Jeng O Kim verfasserin aut Yoon-Jun Kim verfasserin aut Changkyoo Park verfasserin aut In Metals MDPI AG, 2012 11(2021), 5, p 831 (DE-627)718627172 (DE-600)2662252-X 20754701 nnns volume:11 year:2021 number:5, p 831 https://doi.org/10.3390/met11050831 kostenfrei https://doaj.org/article/2ea85d57298c45a085cf1583158e6283 kostenfrei https://www.mdpi.com/2075-4701/11/5/831 kostenfrei https://doaj.org/toc/2075-4701 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 11 2021 5, p 831
spelling	10.3390/met11050831 doi (DE-627)DOAJ05562104X (DE-599)DOAJ2ea85d57298c45a085cf1583158e6283 DE-627 ger DE-627 rakwb eng TN1-997 Won-Sang Shin verfasserin aut Investigation on Laser Welding of Al Ribbon to Cu Sheet: Weldability, Microstructure, and Mechanical and Electrical Properties 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The pulsed laser welding of Al ribbon to Cu sheet was investigated for the electrical interconnections in power electronic modules. The various experimental conditions with the different laser powers, scan speeds, and heat inputs were employed for obtaining the defect-free Al/Cu joints. During the Al/Cu laser welding, the intermetallic compounds were formed in the welding zone. An electron probe microanalyzer and transmission electron microscopy confirmed the phases of intermetallic compounds, which were found to be Al<sub<4</sub<Cu<sub<9</sub<, Al<sub<2</sub<Cu, AlCu, etc. The computational fluid dynamics simulation revealed that the Marangoni effect induced the circulation of the molten pool, resulting in the mixture of Al and Cu and the formation of swirl-like structures at the Al/Cu joints. The tensile shear strengths and electrical resistances of the Al/Cu joints were measured, and they showed a strong correlation with the welding area. A decrease in mechanical strength and an increase in electrical resistance were measured with increasing the welding area of Al/Cu joints. Moreover, the process window for the defect-free Al/Cu joints was developed, and the experimental conditions for Al/Cu laser braze-welding were examined to minimize the intermetallic compounds formation at the Al/Cu joints. laser welding aluminum copper ribbon bonding intermetallic compounds Mining engineering. Metallurgy Dae-Won Cho verfasserin aut Donghyuck Jung verfasserin aut Heeshin Kang verfasserin aut Jeng O Kim verfasserin aut Yoon-Jun Kim verfasserin aut Changkyoo Park verfasserin aut In Metals MDPI AG, 2012 11(2021), 5, p 831 (DE-627)718627172 (DE-600)2662252-X 20754701 nnns volume:11 year:2021 number:5, p 831 https://doi.org/10.3390/met11050831 kostenfrei https://doaj.org/article/2ea85d57298c45a085cf1583158e6283 kostenfrei https://www.mdpi.com/2075-4701/11/5/831 kostenfrei https://doaj.org/toc/2075-4701 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 11 2021 5, p 831
allfields_unstemmed	10.3390/met11050831 doi (DE-627)DOAJ05562104X (DE-599)DOAJ2ea85d57298c45a085cf1583158e6283 DE-627 ger DE-627 rakwb eng TN1-997 Won-Sang Shin verfasserin aut Investigation on Laser Welding of Al Ribbon to Cu Sheet: Weldability, Microstructure, and Mechanical and Electrical Properties 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The pulsed laser welding of Al ribbon to Cu sheet was investigated for the electrical interconnections in power electronic modules. The various experimental conditions with the different laser powers, scan speeds, and heat inputs were employed for obtaining the defect-free Al/Cu joints. During the Al/Cu laser welding, the intermetallic compounds were formed in the welding zone. An electron probe microanalyzer and transmission electron microscopy confirmed the phases of intermetallic compounds, which were found to be Al<sub<4</sub<Cu<sub<9</sub<, Al<sub<2</sub<Cu, AlCu, etc. The computational fluid dynamics simulation revealed that the Marangoni effect induced the circulation of the molten pool, resulting in the mixture of Al and Cu and the formation of swirl-like structures at the Al/Cu joints. The tensile shear strengths and electrical resistances of the Al/Cu joints were measured, and they showed a strong correlation with the welding area. A decrease in mechanical strength and an increase in electrical resistance were measured with increasing the welding area of Al/Cu joints. Moreover, the process window for the defect-free Al/Cu joints was developed, and the experimental conditions for Al/Cu laser braze-welding were examined to minimize the intermetallic compounds formation at the Al/Cu joints. laser welding aluminum copper ribbon bonding intermetallic compounds Mining engineering. Metallurgy Dae-Won Cho verfasserin aut Donghyuck Jung verfasserin aut Heeshin Kang verfasserin aut Jeng O Kim verfasserin aut Yoon-Jun Kim verfasserin aut Changkyoo Park verfasserin aut In Metals MDPI AG, 2012 11(2021), 5, p 831 (DE-627)718627172 (DE-600)2662252-X 20754701 nnns volume:11 year:2021 number:5, p 831 https://doi.org/10.3390/met11050831 kostenfrei https://doaj.org/article/2ea85d57298c45a085cf1583158e6283 kostenfrei https://www.mdpi.com/2075-4701/11/5/831 kostenfrei https://doaj.org/toc/2075-4701 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 11 2021 5, p 831
allfieldsGer	10.3390/met11050831 doi (DE-627)DOAJ05562104X (DE-599)DOAJ2ea85d57298c45a085cf1583158e6283 DE-627 ger DE-627 rakwb eng TN1-997 Won-Sang Shin verfasserin aut Investigation on Laser Welding of Al Ribbon to Cu Sheet: Weldability, Microstructure, and Mechanical and Electrical Properties 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The pulsed laser welding of Al ribbon to Cu sheet was investigated for the electrical interconnections in power electronic modules. The various experimental conditions with the different laser powers, scan speeds, and heat inputs were employed for obtaining the defect-free Al/Cu joints. During the Al/Cu laser welding, the intermetallic compounds were formed in the welding zone. An electron probe microanalyzer and transmission electron microscopy confirmed the phases of intermetallic compounds, which were found to be Al<sub<4</sub<Cu<sub<9</sub<, Al<sub<2</sub<Cu, AlCu, etc. The computational fluid dynamics simulation revealed that the Marangoni effect induced the circulation of the molten pool, resulting in the mixture of Al and Cu and the formation of swirl-like structures at the Al/Cu joints. The tensile shear strengths and electrical resistances of the Al/Cu joints were measured, and they showed a strong correlation with the welding area. A decrease in mechanical strength and an increase in electrical resistance were measured with increasing the welding area of Al/Cu joints. Moreover, the process window for the defect-free Al/Cu joints was developed, and the experimental conditions for Al/Cu laser braze-welding were examined to minimize the intermetallic compounds formation at the Al/Cu joints. laser welding aluminum copper ribbon bonding intermetallic compounds Mining engineering. Metallurgy Dae-Won Cho verfasserin aut Donghyuck Jung verfasserin aut Heeshin Kang verfasserin aut Jeng O Kim verfasserin aut Yoon-Jun Kim verfasserin aut Changkyoo Park verfasserin aut In Metals MDPI AG, 2012 11(2021), 5, p 831 (DE-627)718627172 (DE-600)2662252-X 20754701 nnns volume:11 year:2021 number:5, p 831 https://doi.org/10.3390/met11050831 kostenfrei https://doaj.org/article/2ea85d57298c45a085cf1583158e6283 kostenfrei https://www.mdpi.com/2075-4701/11/5/831 kostenfrei https://doaj.org/toc/2075-4701 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 11 2021 5, p 831
allfieldsSound	10.3390/met11050831 doi (DE-627)DOAJ05562104X (DE-599)DOAJ2ea85d57298c45a085cf1583158e6283 DE-627 ger DE-627 rakwb eng TN1-997 Won-Sang Shin verfasserin aut Investigation on Laser Welding of Al Ribbon to Cu Sheet: Weldability, Microstructure, and Mechanical and Electrical Properties 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The pulsed laser welding of Al ribbon to Cu sheet was investigated for the electrical interconnections in power electronic modules. The various experimental conditions with the different laser powers, scan speeds, and heat inputs were employed for obtaining the defect-free Al/Cu joints. During the Al/Cu laser welding, the intermetallic compounds were formed in the welding zone. An electron probe microanalyzer and transmission electron microscopy confirmed the phases of intermetallic compounds, which were found to be Al<sub<4</sub<Cu<sub<9</sub<, Al<sub<2</sub<Cu, AlCu, etc. The computational fluid dynamics simulation revealed that the Marangoni effect induced the circulation of the molten pool, resulting in the mixture of Al and Cu and the formation of swirl-like structures at the Al/Cu joints. The tensile shear strengths and electrical resistances of the Al/Cu joints were measured, and they showed a strong correlation with the welding area. A decrease in mechanical strength and an increase in electrical resistance were measured with increasing the welding area of Al/Cu joints. Moreover, the process window for the defect-free Al/Cu joints was developed, and the experimental conditions for Al/Cu laser braze-welding were examined to minimize the intermetallic compounds formation at the Al/Cu joints. laser welding aluminum copper ribbon bonding intermetallic compounds Mining engineering. Metallurgy Dae-Won Cho verfasserin aut Donghyuck Jung verfasserin aut Heeshin Kang verfasserin aut Jeng O Kim verfasserin aut Yoon-Jun Kim verfasserin aut Changkyoo Park verfasserin aut In Metals MDPI AG, 2012 11(2021), 5, p 831 (DE-627)718627172 (DE-600)2662252-X 20754701 nnns volume:11 year:2021 number:5, p 831 https://doi.org/10.3390/met11050831 kostenfrei https://doaj.org/article/2ea85d57298c45a085cf1583158e6283 kostenfrei https://www.mdpi.com/2075-4701/11/5/831 kostenfrei https://doaj.org/toc/2075-4701 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 11 2021 5, p 831
language	English
source	In Metals 11(2021), 5, p 831 volume:11 year:2021 number:5, p 831
sourceStr	In Metals 11(2021), 5, p 831 volume:11 year:2021 number:5, p 831
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	laser welding aluminum copper ribbon bonding intermetallic compounds Mining engineering. Metallurgy
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container_title	Metals
authorswithroles_txt_mv	Won-Sang Shin @@aut@@ Dae-Won Cho @@aut@@ Donghyuck Jung @@aut@@ Heeshin Kang @@aut@@ Jeng O Kim @@aut@@ Yoon-Jun Kim @@aut@@ Changkyoo Park @@aut@@
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callnumber-first	T - Technology
author	Won-Sang Shin
spellingShingle	Won-Sang Shin misc TN1-997 misc laser welding misc aluminum misc copper misc ribbon bonding misc intermetallic compounds misc Mining engineering. Metallurgy Investigation on Laser Welding of Al Ribbon to Cu Sheet: Weldability, Microstructure, and Mechanical and Electrical Properties
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topic_title	TN1-997 Investigation on Laser Welding of Al Ribbon to Cu Sheet: Weldability, Microstructure, and Mechanical and Electrical Properties laser welding aluminum copper ribbon bonding intermetallic compounds
topic	misc TN1-997 misc laser welding misc aluminum misc copper misc ribbon bonding misc intermetallic compounds misc Mining engineering. Metallurgy
topic_unstemmed	misc TN1-997 misc laser welding misc aluminum misc copper misc ribbon bonding misc intermetallic compounds misc Mining engineering. Metallurgy
topic_browse	misc TN1-997 misc laser welding misc aluminum misc copper misc ribbon bonding misc intermetallic compounds misc Mining engineering. Metallurgy
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title	Investigation on Laser Welding of Al Ribbon to Cu Sheet: Weldability, Microstructure, and Mechanical and Electrical Properties
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title_full	Investigation on Laser Welding of Al Ribbon to Cu Sheet: Weldability, Microstructure, and Mechanical and Electrical Properties
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author_browse	Won-Sang Shin Dae-Won Cho Donghyuck Jung Heeshin Kang Jeng O Kim Yoon-Jun Kim Changkyoo Park
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title_sort	investigation on laser welding of al ribbon to cu sheet: weldability, microstructure, and mechanical and electrical properties
callnumber	TN1-997
title_auth	Investigation on Laser Welding of Al Ribbon to Cu Sheet: Weldability, Microstructure, and Mechanical and Electrical Properties
abstract	The pulsed laser welding of Al ribbon to Cu sheet was investigated for the electrical interconnections in power electronic modules. The various experimental conditions with the different laser powers, scan speeds, and heat inputs were employed for obtaining the defect-free Al/Cu joints. During the Al/Cu laser welding, the intermetallic compounds were formed in the welding zone. An electron probe microanalyzer and transmission electron microscopy confirmed the phases of intermetallic compounds, which were found to be Al<sub<4</sub<Cu<sub<9</sub<, Al<sub<2</sub<Cu, AlCu, etc. The computational fluid dynamics simulation revealed that the Marangoni effect induced the circulation of the molten pool, resulting in the mixture of Al and Cu and the formation of swirl-like structures at the Al/Cu joints. The tensile shear strengths and electrical resistances of the Al/Cu joints were measured, and they showed a strong correlation with the welding area. A decrease in mechanical strength and an increase in electrical resistance were measured with increasing the welding area of Al/Cu joints. Moreover, the process window for the defect-free Al/Cu joints was developed, and the experimental conditions for Al/Cu laser braze-welding were examined to minimize the intermetallic compounds formation at the Al/Cu joints.
abstractGer	The pulsed laser welding of Al ribbon to Cu sheet was investigated for the electrical interconnections in power electronic modules. The various experimental conditions with the different laser powers, scan speeds, and heat inputs were employed for obtaining the defect-free Al/Cu joints. During the Al/Cu laser welding, the intermetallic compounds were formed in the welding zone. An electron probe microanalyzer and transmission electron microscopy confirmed the phases of intermetallic compounds, which were found to be Al<sub<4</sub<Cu<sub<9</sub<, Al<sub<2</sub<Cu, AlCu, etc. The computational fluid dynamics simulation revealed that the Marangoni effect induced the circulation of the molten pool, resulting in the mixture of Al and Cu and the formation of swirl-like structures at the Al/Cu joints. The tensile shear strengths and electrical resistances of the Al/Cu joints were measured, and they showed a strong correlation with the welding area. A decrease in mechanical strength and an increase in electrical resistance were measured with increasing the welding area of Al/Cu joints. Moreover, the process window for the defect-free Al/Cu joints was developed, and the experimental conditions for Al/Cu laser braze-welding were examined to minimize the intermetallic compounds formation at the Al/Cu joints.
abstract_unstemmed	The pulsed laser welding of Al ribbon to Cu sheet was investigated for the electrical interconnections in power electronic modules. The various experimental conditions with the different laser powers, scan speeds, and heat inputs were employed for obtaining the defect-free Al/Cu joints. During the Al/Cu laser welding, the intermetallic compounds were formed in the welding zone. An electron probe microanalyzer and transmission electron microscopy confirmed the phases of intermetallic compounds, which were found to be Al<sub<4</sub<Cu<sub<9</sub<, Al<sub<2</sub<Cu, AlCu, etc. The computational fluid dynamics simulation revealed that the Marangoni effect induced the circulation of the molten pool, resulting in the mixture of Al and Cu and the formation of swirl-like structures at the Al/Cu joints. The tensile shear strengths and electrical resistances of the Al/Cu joints were measured, and they showed a strong correlation with the welding area. A decrease in mechanical strength and an increase in electrical resistance were measured with increasing the welding area of Al/Cu joints. Moreover, the process window for the defect-free Al/Cu joints was developed, and the experimental conditions for Al/Cu laser braze-welding were examined to minimize the intermetallic compounds formation at the Al/Cu joints.
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container_issue	5, p 831
title_short	Investigation on Laser Welding of Al Ribbon to Cu Sheet: Weldability, Microstructure, and Mechanical and Electrical Properties
url	https://doi.org/10.3390/met11050831 https://doaj.org/article/2ea85d57298c45a085cf1583158e6283 https://www.mdpi.com/2075-4701/11/5/831 https://doaj.org/toc/2075-4701
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author2	Dae-Won Cho Donghyuck Jung Heeshin Kang Jeng O Kim Yoon-Jun Kim Changkyoo Park
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up_date	2024-07-03T16:04:09.911Z
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Investigation on Laser Welding of Al Ribbon to Cu Sheet: Weldability, Microstructure, and Mechanical and Electrical Properties

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