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Effect of Heat Treatment on the Microstructure and Mechanical Properties of the Modified 718 Alloy
Han, Da-Wei1; Yu, Lian-Xu2; Liu, Fang3; Zhang, Bin1; Sun, Wen-Ru3
Corresponding AuthorSun, Wen-Ru(wrsun@imr.ac.cn)
2018-11-01
Source PublicationACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN1006-7191
Volume31Issue:11Pages:1224-1232
AbstractM718 alloy with an extra high Mo content of 7.50wt% which reduced Nb addition and increased Al and Ti additions within the composition specifications of 718 alloy has been designed to increase the service temperature of 718 alloy. And the effect of the heat treatment on the microstructure and mechanical properties of M718 alloy has been investigated in this study. The results showed that Laves phase precipitated on the grain boundaries of M718 alloy instead of -Ni3Nb phase in 718 alloy, and and phases precipitated in the matrix of M718 alloy as that in 718 alloy. Increasing the solution temperature from 960 to 1050 degrees C noticeably reduced the intergranular precipitation of Laves phase. The precipitation of Laves phase was appropriate at 1020 degrees C for improving the grain boundary cohesion. Increasing the two-stage aging temperatures markedly increased the sizes of and phases. As a result, the strength of M718 alloy increased.
KeywordHeat treatment Mo 718 alloy Microstructure Mechanical properties
DOI10.1007/s40195-018-0790-9
Indexed BySCI
Language英语
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000444031000010
PublisherCHINESE ACAD SCIENCES, INST METAL RESEARCH
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/129391
Collection中国科学院金属研究所
Corresponding AuthorSun, Wen-Ru
Affiliation1.Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Liaoning, Peoples R China
2.Chongqing Skyrizon Aeroengine Co Ltd, Chongqing 401135, Peoples R China
3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Han, Da-Wei,Yu, Lian-Xu,Liu, Fang,et al. Effect of Heat Treatment on the Microstructure and Mechanical Properties of the Modified 718 Alloy[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2018,31(11):1224-1232.
APA Han, Da-Wei,Yu, Lian-Xu,Liu, Fang,Zhang, Bin,&Sun, Wen-Ru.(2018).Effect of Heat Treatment on the Microstructure and Mechanical Properties of the Modified 718 Alloy.ACTA METALLURGICA SINICA-ENGLISH LETTERS,31(11),1224-1232.
MLA Han, Da-Wei,et al."Effect of Heat Treatment on the Microstructure and Mechanical Properties of the Modified 718 Alloy".ACTA METALLURGICA SINICA-ENGLISH LETTERS 31.11(2018):1224-1232.
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