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Influence of heat treatment on the microstructure and mechanical properties of DZ951 alloy
Xia Pengcheng1,2; Yu Jingjiang1; Sun Xiaofeng1; Guan Hengrong1; Hu Zhuangqi1
Corresponding AuthorXia Pengcheng(xpc328@126.com)
2008-04-01
Source PublicationRARE METALS
ISSN1001-0521
Volume27Issue:2Pages:216-222
AbstractDZ951 directionally solidified nickel-base superalloy is mainly strengthened by gamma phase. Regularly aligned cuboidal and bimodal gamma precipitates were attained by two heat treatments. The effect of microstructure on the mechanical properties of DZ951 alloy has been investigated. The results indicate that MC carbide changes to little blocks during aging treatment at 1050 degrees C (HT1). MC carbide partly degrades into M(23)C(6) and there is a layer of gamma around the carbide during aging treatment at 1150 degrees C (HT2), which is beneficial to the elongation of DZ951 alloy. Small gamma volume fraction and the uneven deformation structure are contributed to low mechanical properties of the as-cast alloy. HT1 alloy has a better stress rupture life at 1100 degrees C/50 MPa and yield stress at 20 degrees C, 800 degrees C and 1100 degrees C, which is attributed to regularly aligned cuboidal gamma phase and even deformation structure. HT2 alloy has a good combination of strength and ductility. This arises from the bimodal Y precipitates and the degeneration of MC carbide.
KeywordDZ951 alloy heat treatment microstructure mechanical properties
Indexed BySCI
Language英语
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000255482700023
PublisherNONFERROUS METALS SOC CHINA
Citation statistics
Cited Times:15[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/93881
Collection中国科学院金属研究所
Corresponding AuthorXia Pengcheng
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
2.Shandong Univ Sci & Technol, Sch Mat Sci & Engn, Qingdao 266510, Peoples R China
Recommended Citation
GB/T 7714
Xia Pengcheng,Yu Jingjiang,Sun Xiaofeng,et al. Influence of heat treatment on the microstructure and mechanical properties of DZ951 alloy[J]. RARE METALS,2008,27(2):216-222.
APA Xia Pengcheng,Yu Jingjiang,Sun Xiaofeng,Guan Hengrong,&Hu Zhuangqi.(2008).Influence of heat treatment on the microstructure and mechanical properties of DZ951 alloy.RARE METALS,27(2),216-222.
MLA Xia Pengcheng,et al."Influence of heat treatment on the microstructure and mechanical properties of DZ951 alloy".RARE METALS 27.2(2008):216-222.
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