Transformation behavior of ω/α" precipitates during aging and their influences on tensile properties in Ti-3Al-5Mo-4.5 V alloy

doi:10.1016/j.jallcom.2024.176526

IMR OpenIR

	Transformation behavior of ω/α" precipitates during aging and their influences on tensile properties in Ti-3Al-5Mo-4.5 V alloy
	Jia, Yandi 1,2; Ma, Yingjie 1,2,3; Chen, Song 2; Yang, Yujing 1,2; Wang, Qian 2; Huang, Sensen 2; Qi, Min 2; Lei, Jiafeng 1,2; Yang, Rui 1,2
通讯作者	Ma, Yingjie(yjma@imr.ac.cn)
	2024-12-15
发表期刊	JOURNAL OF ALLOYS AND COMPOUNDS
ISSN	0925-8388
卷号	1008 页码:8
摘要	The metastable omega and alpha '' '' in titanium alloys have a significant impact on the subsequent alpha precipitates and the final mechanical properties. Herein, the microstructure transformation of coexisting omega/alpha '' '' during aging and their effects on tensile properties have been systematically investigated in Ti-3Al-5Mo-4.5 V (wt%) alpha/beta titanium alloy. The results demonstrate that the secondary phase within the beta-transformed (beta trans)grain trans ) grain evolves from embryonic omega + alpha '' '' to isothermal omega + alpha '', '' , and ultimately transforms to secondary alpha (alpha s) s ) with the aging temperature ascending from 300 degrees C to 550 degrees C. As embryonic omega transforms to isothermal omega, the yield strength increases from 1130.0 +/- 14 MPa to 1259.5 +/- 5.5 MPa with weak elongation due to the excellent strengthen effect of undeformed isothermal omega. After aging at 550 degrees C, coexisting micron-scale alpha p p and nanoscale alpha s s microstructures lead to enhanced elongation (increase by 93.7 %), sacrificing only 21.7 % yield strength. Both a > and dislocations are simultaneously presented in micron-scale alpha p p grain, while nanoscale alpha s s plates act as effective obstacles for dislocation motion resulting in accumulation of dense dislocations near the beta/alpha sinterfaces. s interfaces. This work provides new insights on strengthening strategy and developing new Ti-alloys.
关键词	omega particles Secondary alpha plates Phase transformation Titanium alloys alpha '' phase
资助者	National Key Research and Development Program of China ; Natural Science Foundation of China ; CAS Project for Young Scientists in Basic Research ; Youth Innovation Promotion Association CAS
DOI	10.1016/j.jallcom.2024.176526
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China[2021YFC2801801] ; Natural Science Foundation of China[112106215] ; CAS Project for Young Scientists in Basic Research[YSBR-025] ; Youth Innovation Promotion Association CAS
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001318880900001
出版者	ELSEVIER SCIENCE SA
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/190108
专题	中国科学院金属研究所
通讯作者	Ma, Yingjie
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, Wenhua Rd 72, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Wenhua Rd 72, Shenyang 110016, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Wenhua Rd 72, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Jia, Yandi,Ma, Yingjie,Chen, Song,et al. Transformation behavior of ω/α" precipitates during aging and their influences on tensile properties in Ti-3Al-5Mo-4.5 V alloy[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2024,1008:8.
APA	Jia, Yandi.,Ma, Yingjie.,Chen, Song.,Yang, Yujing.,Wang, Qian.,...&Yang, Rui.(2024).Transformation behavior of ω/α" precipitates during aging and their influences on tensile properties in Ti-3Al-5Mo-4.5 V alloy.JOURNAL OF ALLOYS AND COMPOUNDS,1008,8.
MLA	Jia, Yandi,et al."Transformation behavior of ω/α" precipitates during aging and their influences on tensile properties in Ti-3Al-5Mo-4.5 V alloy".JOURNAL OF ALLOYS AND COMPOUNDS 1008(2024):8.