Thermally induced reaction and transient hardening of miscible spinodoid alloys

doi:10.1016/j.actamat.2023.119611

IMR OpenIR

	Thermally induced reaction and transient hardening of miscible spinodoid alloys
	Guan, Huai 1,2; Xie, Hui 1; Li, Cui-Hong 1; Jin, Hai-Jun 1
通讯作者	Jin, Hai-Jun(hjjin@imr.ac.cn)
	2024-02-15
发表期刊	ACTA MATERIALIA
ISSN	1359-6454
卷号	265 页码:12
摘要	Spinodoid alloys prepared by dealloying and deposition exhibit a bicontinuous dual-phase nanostructure with (semi-)coherent interfaces, resembling some features of the structure formed in spinodal decompostion. Composition fluctuation in such material and its spinodal-like hardening may then be tuned via thermally induced interdiffusion, even in undecomposable alloys. This paper studied the annealing behavior of miscible Cu/Au and Ag/Au spinodoid alloys with semi-coherent and coherent interfaces respectively. While the interdiffusion-dominated interfacial mixing occurs in both alloys, this process is interrupted in the Cu/Au alloys by a recrystallization-like reaction due to the large lattice mismatch between Cu and Au. We also found that interdiffusion does not monotonically soften these materials; instead, hardening can be observed in both alloys at the early stage of annealing, though further annealing eventually leads to softening. Thermally induced transient hardening is attributed to the formation of a diffuse Cu/Au or Ag/Au interface whose barrier strength to dislocation transmission is enhanced comparing to the sharp interface before annealing. Localized solid solution hardening and the dissociation of misfit dislocations within the diffuse interface might have led to the increase of interfacial barrier strength.
关键词	Spinodoid alloys Thermal stability Hardening Diffusion Coherent and semicoherent interfaces
资助者	National Natural Science Founda-tion of China ; Shenyang National Laboratory for Materials Science
DOI	10.1016/j.actamat.2023.119611
收录类别	SCI
语种	英语
资助项目	National Natural Science Founda-tion of China[51971218] ; Shenyang National Laboratory for Materials Science[L2021R36]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001145776600001
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/183625
专题	中国科学院金属研究所
通讯作者	Jin, Hai-Jun
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Guan, Huai,Xie, Hui,Li, Cui-Hong,et al. Thermally induced reaction and transient hardening of miscible spinodoid alloys[J]. ACTA MATERIALIA,2024,265:12.
APA	Guan, Huai,Xie, Hui,Li, Cui-Hong,&Jin, Hai-Jun.(2024).Thermally induced reaction and transient hardening of miscible spinodoid alloys.ACTA MATERIALIA,265,12.
MLA	Guan, Huai,et al."Thermally induced reaction and transient hardening of miscible spinodoid alloys".ACTA MATERIALIA 265(2024):12.