Variant selection mechanism of α phase associated with initial texture and cooling rate in near-α titanium alloy Ti65

doi:10.1016/j.matchar.2025.114874

IMR OpenIR

	Variant selection mechanism of α phase associated with initial texture and cooling rate in near-α titanium alloy Ti65
	Zhao, Ding 1; Fan, Jiangkun 1,2,3; Zhang, Zhixin 2; Liang, Xiaoyuan 1; Chen, Zesen 1; Chen, Zhiyong 4; Lai, Minjie 1,2,3; Tang, Bin 1,2,3; Kou, Hongchao 1,2,3; Wang, Qingjiang 4; Li, Jinshan 1,2,3
通讯作者	Fan, Jiangkun(jkfan@nwpu.edu.cn)
	2025-05-01
发表期刊	MATERIALS CHARACTERIZATION
ISSN	1044-5803
卷号	223 页码:17
摘要	The elucidation of the impact of the initial texture and cooling rate on the variant selection (VS) mechanism of alpha-phase in titanium alloys is essential for optimising their microstructure and mechanical properties. In this study, Ti65 foils featuring three different initial textures underwent annealing in the alpha + beta phase region, followed by cooling at three different rates. Under slow cooling conditions (furnace cooling), the primary mechanism governing texture evolution of alpha-phase is the grain growth of the primary alpha (alpha p) grains. Consequently, the effect of the initial texture on the texture evolution of alpha-phase under slow cooling is ascribed to variations in the alpha p grains in the samples after heat treatments. Additionally, standard disorientation angle theta m distribution maps of the alpha texture under different beta textures are developed to predict the texture of the alpha p grains. In contrast, during rapid cooling (200 degrees C/min cooling and air cooling), texture evolution of alpha-phase is driven by the precipitation of the secondary alpha (alpha s) grains. In this case, a change in the cooling rate has no effect on the VS mechanism of alpha-phase at the alpha p/beta and beta/beta boundaries, but it changes the VS mechanism of alpha-phase at the parent beta grain interior. Therefore, the influence of the initial texture on VS mechanism of alpha-phase under rapid cooling varies with cooling rates, depending on the ratio of alpha s grains precipitated at alpha p/beta and beta/beta boundaries to the alpha s grains precipitated at the parent beta grain interior.
关键词	Titanium alloy Variant selection Texture Cooling rate Intervariant boundary distribution
资助者	National Natural Science Foundation of China ; National Key Research and Development Program of China ; China Postdoctoral Science Foundation ; Chongqing Natural Science Foundation
DOI	10.1016/j.matchar.2025.114874
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[52074231] ; National Natural Science Foundation of China[52274396] ; National Key Research and Development Program of China[2021YFB3702604] ; China Postdoctoral Science Foundation[2023M732851] ; Chongqing Natural Science Foundation[cstc2020jcyj-msxmX1056]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Materials Science, Characterization & Testing
WOS记录号	WOS:001435988900001
出版者	ELSEVIER SCIENCE INC
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/179757
专题	中国科学院金属研究所
通讯作者	Fan, Jiangkun
作者单位	1.Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Peoples R China 2.Northwestern Polytech Univ, Chongqing Innovat Ctr, Chongqing 401135, Peoples R China 3.Natl & Local Joint Engn Res Ctr Precis Thermoformi, Hanjiang Natl Lab, Xian 710072, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Ding,Fan, Jiangkun,Zhang, Zhixin,et al. Variant selection mechanism of α phase associated with initial texture and cooling rate in near-α titanium alloy Ti65[J]. MATERIALS CHARACTERIZATION,2025,223:17.
APA	Zhao, Ding.,Fan, Jiangkun.,Zhang, Zhixin.,Liang, Xiaoyuan.,Chen, Zesen.,...&Li, Jinshan.(2025).Variant selection mechanism of α phase associated with initial texture and cooling rate in near-α titanium alloy Ti65.MATERIALS CHARACTERIZATION,223,17.
MLA	Zhao, Ding,et al."Variant selection mechanism of α phase associated with initial texture and cooling rate in near-α titanium alloy Ti65".MATERIALS CHARACTERIZATION 223(2025):17.