Precipitation evolution in Cux[Ni3Cr1] spinodal alloys under mismatch control

doi:10.1016/j.matchemphys.2018.11.035

	Precipitation evolution in Cux[Ni3Cr1] spinodal alloys under mismatch control
	Li, X. N.1; Li, Z. M.1; Cheng, X. T.1; Sun, W.1; Zheng, Y. H.2; Yu, Q. X.1; Wang, C. Y.1; Wang, Q.1; Dong, C.1
	2019-02-01
发表期刊	Materials Chemistry and Physics
ISSN	02540584
卷号	223 页码:486-493
摘要	Cu–Ni–Cr alloys have a typical spinodal decomposition structure. However, a systematic investigation of the correlation between the mismatch of the two decomposition phases, Cu-rich (γ1) and Ni-rich (γ2), and the γ2 morphology is lacking. In this study, the microstructure evolution of Cux[Ni3Cr1] (x = 1, 2, 3, 4, 5, 7, 9, and 12) alloys was investigated over a wide composition range. The results show that mismatch significantly affects the shape of the γ2 precipitates. The γ2 phase is cubic when the mismatch degree (η) is in the range 0.62%–0.75% and lath-shaped when η is in the range 1.08%–1.35%. With increasing Cu content, the proportion of the lath-shaped γ2 phase decreases and that of the cubic γ2 phase continuously increases. Cubic precipitates enhance the alloy strength, while lath-shaped precipitates show better corrosion resistance owing to their high packing density. Therefore, an appropriate x can be chosen according to the actual service conditions. In addition, the Cr state affects the microstructure and performance of the alloys. Cr in the solid solution state promotes spinodal decomposition, while a large amount of Cr-rich precipitates at the grain boundaries has a negative effect on the mechanical performance. © 2018 Elsevier B.V.
关键词	Chromium alloys Copper alloys Corrosion resistance Corrosion resistant alloys Grain boundaries Microstructure Morphology Precipitation (chemical) Strengthening (metal) Composition ranges Decomposition phasis High packing density Mechanical performance Micro-structure evolutions Mismatch Service conditions Solid-solution state
DOI	10.1016/j.matchemphys.2018.11.035
收录类别	EI ; SCIE
语种	英语
资助项目	Fundamental Research Funds for the Central Universities[DUT17LAB09]
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:000456902400062
出版者	Elsevier Ltd
EI入藏号	20190306397323
EI主题词	Spinodal decomposition
EI分类号	531.1 Metallurgy - 539.1 Metals Corrosion - 543.1 Chromium and Alloys - 544.2 Copper Alloys - 802.3 Chemical Operations - 931.2 Physical Properties of Gases, Liquids and Solids - 951 Materials Science
来源库	Compendex
分类代码	531.1 Metallurgy - 539.1 Metals Corrosion - 543.1 Chromium and Alloys - 544.2 Copper Alloys - 802.3 Chemical Operations - 931.2 Physical Properties of Gases, Liquids and Solids - 951 Materials Science
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/114239
专题	兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室
通讯作者	Li, X. N.
作者单位	1.Dalian Univ Technol, Key Lab Mat Modificat Laser Ion & Electron Beams, Minist Educ, Dalian 116024, Peoples R China; 2.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Li, X. N.,Li, Z. M.,Cheng, X. T.,et al. Precipitation evolution in Cux[Ni3Cr1] spinodal alloys under mismatch control[J]. Materials Chemistry and Physics,2019,223:486-493.
APA	Li, X. N..,Li, Z. M..,Cheng, X. T..,Sun, W..,Zheng, Y. H..,...&Dong, C..(2019).Precipitation evolution in Cux[Ni3Cr1] spinodal alloys under mismatch control.Materials Chemistry and Physics,223,486-493.
MLA	Li, X. N.,et al."Precipitation evolution in Cux[Ni3Cr1] spinodal alloys under mismatch control".Materials Chemistry and Physics 223(2019):486-493.