Influence of simulated heat-affected zone thermal cycle treatment on mechanical performances and microstructural stability of Ni-17Mo-7Cr based superalloy

doi:10.1016/j.vacuum.2015.11.025

CAS OpenIR > 中科院上海应用物理研究所2011-2018年

	Influence of simulated heat-affected zone thermal cycle treatment on mechanical performances and microstructural stability of Ni-17Mo-7Cr based superalloy
	He, YM; Yang, JG; Chen, SJ; Gao, ZL; Yang, JG (reprint author), Zhejiang Univ Technol, Inst Proc Equipment & Control Engn, Hangzhou 310014, Zhejiang, Peoples R China.
	2016
Source Publication	VACUUM
ISSN	0042-207X
Volume	125 Issue:-Pages:26—35
Subtype	期刊文献
Abstract	In the work, a Ni-17Mo-7Cr (wt.%) based superalloy was prepared, and its high-temperature (800 degrees C) mechanical properties and microstructural stability was evaluated when subjecting to the treatment of simulated heat-affected zone (HAZ) thermal cycle. The results reveal that a lamellar-like structure, which occurs in the alloy, is actually the mixture of Ni matrix and carbides (mainly MoC). When the peak temperature is elevated up to 1350 degrees C during the HAZ simulation, an equivalent excellent mechanical property is obtained relative to that of the alloy without treatment, due to formation of the typical structures in the alloy. After tensile tests, the hybrid fracture behavior appears on the fracture surfaces, in which the inter-granular fracture with torturous fracture surfaces in company with the ductile fracture are concurrently found. At last, the simulated microstructure can maintain its stability during the tests of isothermal stress relaxation. Based on the results of tensile tests and stress relaxation, we can infer that the simulated microstructure can preserve its excellent mechanical properties and stability at high temperatures. (C) 2015 Elsevier Ltd. All rights reserved.
Keyword	Ni-21cr-17mo Alloy Grain-boundary Hastelloy-n Precipitation Temperature Resistance Behaviors Carbide
DOI	10.1016/j.vacuum.2015.11.025
Indexed By	SCI
Language	英语
WOS ID	WOS:000370096500005
Citation statistics	Cited Times:3[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.sinap.ac.cn/handle/331007/25755
Collection	中科院上海应用物理研究所2011-2018年
Corresponding Author	Yang, JG (reprint author), Zhejiang Univ Technol, Inst Proc Equipment & Control Engn, Hangzhou 310014, Zhejiang, Peoples R China.
Recommended Citation GB/T 7714	He, YM,Yang, JG,Chen, SJ,et al. Influence of simulated heat-affected zone thermal cycle treatment on mechanical performances and microstructural stability of Ni-17Mo-7Cr based superalloy[J]. VACUUM,2016,125(-):26—35.
APA	He, YM,Yang, JG,Chen, SJ,Gao, ZL,&Yang, JG .(2016).Influence of simulated heat-affected zone thermal cycle treatment on mechanical performances and microstructural stability of Ni-17Mo-7Cr based superalloy.VACUUM,125(-),26—35.
MLA	He, YM,et al."Influence of simulated heat-affected zone thermal cycle treatment on mechanical performances and microstructural stability of Ni-17Mo-7Cr based superalloy".VACUUM 125.-(2016):26—35.

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