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Thermal Fatigue Properties of DZ40M Alloy
Xia Pengcheng1,2; Yu Jinjiang2; Sun Xiaofeng2; Guan Hengrong2; Hu Zhuangqi2
Corresponding AuthorXia Pengcheng(xpc328@126.com)
2011
Source PublicationRARE METAL MATERIALS AND ENGINEERING
ISSN1002-185X
Volume40Issue:1Pages:152-155
AbstractThermal fatigue properties of DZ40M directionally solidified cobalt-base superalloy was investigated by scanning electric microscope. The results show that the crack propagation rate increases and the thermal fatigue resistance decreases with the rise of the upper temperature. Resistance of thermal fatigue is improved with the holding time prolonging at the same upper temperature, which is caused by the formation of uniform and compact film of oxide on the surface. Due to different thermal expanding coefficients of the matrix and the carbides, crack holes are easily formed in the boundary of the matrix and carbides at alternating temperatures during thermal fatigue; as a result, cracks of thermal fatigue initiate. The interconnection of crack holes makes thermal fatigue crack propagate.
KeywordDZ40M alloy thermal fatigue crack initiation crack propagation
Indexed BySCI
Language英语
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000291966300026
PublisherNORTHWEST INST NONFERROUS METAL RESEARCH
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/105809
Collection中国科学院金属研究所
Corresponding AuthorXia Pengcheng
Affiliation1.Shandong Univ Sci & Technol, Sch Mat Sci & Engn, Qingdao 266510, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Xia Pengcheng,Yu Jinjiang,Sun Xiaofeng,et al. Thermal Fatigue Properties of DZ40M Alloy[J]. RARE METAL MATERIALS AND ENGINEERING,2011,40(1):152-155.
APA Xia Pengcheng,Yu Jinjiang,Sun Xiaofeng,Guan Hengrong,&Hu Zhuangqi.(2011).Thermal Fatigue Properties of DZ40M Alloy.RARE METAL MATERIALS AND ENGINEERING,40(1),152-155.
MLA Xia Pengcheng,et al."Thermal Fatigue Properties of DZ40M Alloy".RARE METAL MATERIALS AND ENGINEERING 40.1(2011):152-155.
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