Feasibility analysis of obtaining tri-modal microstructure by multi-pass conventional forging combined with dual heat treatment for near-α titanium alloy with different initial microstructures

Conventional forging followed by dual heat treatment (near-β and two-phase field heat treatments) is a feasible technique aimed at obtaining tri-modal microstructure in near-α titanium alloys. In view of the enlargement and integration of aerospace structural parts as well as the microstructure dive...
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Gespeichert in:

Autor*in:	Zhikun Yin [verfasserIn] Zhichao Sun [verfasserIn] Long Huang [verfasserIn] Yu Wang [verfasserIn] Lijiao Yin [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2023

Schlagwörter:	Near-α titanium alloy Tri-modal microstructure Multi-pass conventional forging Dual heat treatment Initial microstructure

Übergeordnetes Werk:	In: International Journal of Lightweight Materials and Manufacture - KeAi Communications Co., Ltd., 2018, 6(2023), 1, Seite 25-32
Übergeordnetes Werk:	volume:6 ; year:2023 ; number:1 ; pages:25-32

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.1016/j.ijlmm.2022.09.004

Katalog-ID:	DOAJ080088147

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In view of the enlargement and integration of aerospace structural parts as well as the microstructure diversification of original billet, the Ti–6242S alloy specimens with three different initial microstructures were subjected to multi-pass conventional forging and dual heat treatment. The flow behavior and microstructure evolution of material were analyzed. The results indicated that lamellar α has a stronger ability to coordinate deformation than equiaxed α. The more lamellar α in the microstructure, the slower the microstructure reconstruction during deformation interruption. It is feasible to obtain tri-modal microstructure by any pass conventional forging and dual heat treatment for the initial equiaxed or duplex microstructure, and two passes are more appropriate. The difference between initial equiaxed and duplex microstructures is gradually eliminated through a series of microstructure evolutions during the subsequent heat treatment. For initial lamellar microstructure, a kind of microstructure with multi-scale equiaxed α can be formed after multi-pass conventional forging. The spheroidization fraction of lamellar α is significantly increased with the increase of deformation pass. 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author	Zhikun Yin
spellingShingle	Zhikun Yin misc Near-α titanium alloy misc Tri-modal microstructure misc Multi-pass conventional forging misc Dual heat treatment misc Initial microstructure misc Technology misc T Feasibility analysis of obtaining tri-modal microstructure by multi-pass conventional forging combined with dual heat treatment for near-α titanium alloy with different initial microstructures
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topic_title	Feasibility analysis of obtaining tri-modal microstructure by multi-pass conventional forging combined with dual heat treatment for near-α titanium alloy with different initial microstructures Near-α titanium alloy Tri-modal microstructure Multi-pass conventional forging Dual heat treatment Initial microstructure
topic	misc Near-α titanium alloy misc Tri-modal microstructure misc Multi-pass conventional forging misc Dual heat treatment misc Initial microstructure misc Technology misc T
topic_unstemmed	misc Near-α titanium alloy misc Tri-modal microstructure misc Multi-pass conventional forging misc Dual heat treatment misc Initial microstructure misc Technology misc T
topic_browse	misc Near-α titanium alloy misc Tri-modal microstructure misc Multi-pass conventional forging misc Dual heat treatment misc Initial microstructure misc Technology misc T
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title	Feasibility analysis of obtaining tri-modal microstructure by multi-pass conventional forging combined with dual heat treatment for near-α titanium alloy with different initial microstructures
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title_full	Feasibility analysis of obtaining tri-modal microstructure by multi-pass conventional forging combined with dual heat treatment for near-α titanium alloy with different initial microstructures
author_sort	Zhikun Yin
journal	International Journal of Lightweight Materials and Manufacture
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author_browse	Zhikun Yin Zhichao Sun Long Huang Yu Wang Lijiao Yin
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title_sort	feasibility analysis of obtaining tri-modal microstructure by multi-pass conventional forging combined with dual heat treatment for near-α titanium alloy with different initial microstructures
title_auth	Feasibility analysis of obtaining tri-modal microstructure by multi-pass conventional forging combined with dual heat treatment for near-α titanium alloy with different initial microstructures
abstract	Conventional forging followed by dual heat treatment (near-β and two-phase field heat treatments) is a feasible technique aimed at obtaining tri-modal microstructure in near-α titanium alloys. In view of the enlargement and integration of aerospace structural parts as well as the microstructure diversification of original billet, the Ti–6242S alloy specimens with three different initial microstructures were subjected to multi-pass conventional forging and dual heat treatment. The flow behavior and microstructure evolution of material were analyzed. The results indicated that lamellar α has a stronger ability to coordinate deformation than equiaxed α. The more lamellar α in the microstructure, the slower the microstructure reconstruction during deformation interruption. It is feasible to obtain tri-modal microstructure by any pass conventional forging and dual heat treatment for the initial equiaxed or duplex microstructure, and two passes are more appropriate. The difference between initial equiaxed and duplex microstructures is gradually eliminated through a series of microstructure evolutions during the subsequent heat treatment. For initial lamellar microstructure, a kind of microstructure with multi-scale equiaxed α can be formed after multi-pass conventional forging. The spheroidization fraction of lamellar α is significantly increased with the increase of deformation pass. Tri-modal microstructure can be obtained through three-pass forging and dual heat treatment.
abstractGer	Conventional forging followed by dual heat treatment (near-β and two-phase field heat treatments) is a feasible technique aimed at obtaining tri-modal microstructure in near-α titanium alloys. In view of the enlargement and integration of aerospace structural parts as well as the microstructure diversification of original billet, the Ti–6242S alloy specimens with three different initial microstructures were subjected to multi-pass conventional forging and dual heat treatment. The flow behavior and microstructure evolution of material were analyzed. The results indicated that lamellar α has a stronger ability to coordinate deformation than equiaxed α. The more lamellar α in the microstructure, the slower the microstructure reconstruction during deformation interruption. It is feasible to obtain tri-modal microstructure by any pass conventional forging and dual heat treatment for the initial equiaxed or duplex microstructure, and two passes are more appropriate. The difference between initial equiaxed and duplex microstructures is gradually eliminated through a series of microstructure evolutions during the subsequent heat treatment. For initial lamellar microstructure, a kind of microstructure with multi-scale equiaxed α can be formed after multi-pass conventional forging. The spheroidization fraction of lamellar α is significantly increased with the increase of deformation pass. Tri-modal microstructure can be obtained through three-pass forging and dual heat treatment.
abstract_unstemmed	Conventional forging followed by dual heat treatment (near-β and two-phase field heat treatments) is a feasible technique aimed at obtaining tri-modal microstructure in near-α titanium alloys. In view of the enlargement and integration of aerospace structural parts as well as the microstructure diversification of original billet, the Ti–6242S alloy specimens with three different initial microstructures were subjected to multi-pass conventional forging and dual heat treatment. The flow behavior and microstructure evolution of material were analyzed. The results indicated that lamellar α has a stronger ability to coordinate deformation than equiaxed α. The more lamellar α in the microstructure, the slower the microstructure reconstruction during deformation interruption. It is feasible to obtain tri-modal microstructure by any pass conventional forging and dual heat treatment for the initial equiaxed or duplex microstructure, and two passes are more appropriate. The difference between initial equiaxed and duplex microstructures is gradually eliminated through a series of microstructure evolutions during the subsequent heat treatment. For initial lamellar microstructure, a kind of microstructure with multi-scale equiaxed α can be formed after multi-pass conventional forging. The spheroidization fraction of lamellar α is significantly increased with the increase of deformation pass. Tri-modal microstructure can be obtained through three-pass forging and dual heat treatment.
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title_short	Feasibility analysis of obtaining tri-modal microstructure by multi-pass conventional forging combined with dual heat treatment for near-α titanium alloy with different initial microstructures
url	https://doi.org/10.1016/j.ijlmm.2022.09.004 https://doaj.org/article/0cb801d2d05d4662a2d7d8b4d8afb378 http://www.sciencedirect.com/science/article/pii/S2588840422000609 https://doaj.org/toc/2588-8404
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up_date	2024-07-04T02:00:34.543Z
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Feasibility analysis of obtaining tri-modal microstructure by multi-pass conventional forging combined with dual heat treatment for near-α titanium alloy with different initial microstructures

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