Tuning temperature coefficient of elastic modulus by heat treatment in a compositionally-modulated Ti-Nb-based alloy

doi:10.1016/j.scriptamat.2022.115275

IMR OpenIR

	Tuning temperature coefficient of elastic modulus by heat treatment in a compositionally-modulated Ti-Nb-based alloy
	Gong, Delun 1,2; Wang, Haoliang 3; Wang, Qiushuang 1,2; Li, Shujun 1; Lin, Kun 4; Wang, Yandong 5; Yang, Rui 1; Hao, Yulin 1
通讯作者	Hao, Yulin(ylhao@imr.ac.cn)
	2023-04-01
发表期刊	SCRIPTA MATERIALIA
ISSN	1359-6462
卷号	227 页码:6
摘要	Temperature coefficient of elastic modulus can be positive for metastable13 phase in titanium alloys whereas the precipitation of alpha phase from the13 matrix phase results in a negative coefficient. This abrupt transition inspires us to tune the coefficient from positive, via zero of Elinvar effect, to negative by aging treatment in a Ti-Nb-based alloy. Here reports that its coefficients are continuously tunable by a compositionally-modulated 13+alpha" dual-phase microstructure induced by spinodal decomposition. As the aging time increases at 723 K, the coefficient keeps positive almost unchanged initially, then drops quickly toward zero, and finally decreases slowly of being negative. A mixture rule modeling suggests that the coefficients of both phases decrease gradually from positive of being metastable to negative of being stable. These findings provide a new strategy to achieve Elinvar effect by optimizing the compositionally-modulated microstructure via heat treatments.
关键词	Elastic modulus Titanium alloy Elinvar effect Spinodal decomposition Phase stability
资助者	NSF of China ; CAS
DOI	10.1016/j.scriptamat.2022.115275
收录类别	SCI
语种	英语
资助项目	NSF of China[51771209] ; NSF of China[51901042] ; CAS[QYZDJ-SSW-JSC031]
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000993455900001
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：10[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/177950
专题	中国科学院金属研究所
通讯作者	Hao, Yulin
作者单位	1.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Dongguan Univ Technol, Sch Mech Engn, Dongguan 523808, Peoples R China 4.Univ Sci & Technol Beijing, Inst Solid State Chem, Beijing Adv Innovat Ctr Mat Genome Engn, Dept Phys Chem, Beijing 100083, Peoples R China 5.Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China
推荐引用方式 GB/T 7714	Gong, Delun,Wang, Haoliang,Wang, Qiushuang,et al. Tuning temperature coefficient of elastic modulus by heat treatment in a compositionally-modulated Ti-Nb-based alloy[J]. SCRIPTA MATERIALIA,2023,227:6.
APA	Gong, Delun.,Wang, Haoliang.,Wang, Qiushuang.,Li, Shujun.,Lin, Kun.,...&Hao, Yulin.(2023).Tuning temperature coefficient of elastic modulus by heat treatment in a compositionally-modulated Ti-Nb-based alloy.SCRIPTA MATERIALIA,227,6.
MLA	Gong, Delun,et al."Tuning temperature coefficient of elastic modulus by heat treatment in a compositionally-modulated Ti-Nb-based alloy".SCRIPTA MATERIALIA 227(2023):6.