Creep characteristic of NiAl-9Mo eutectic alloy
Ren, WL; Guo, JT; Li, GS; Wu, JS
Corresponding AuthorRen, WL(
AbstractThe creep behavior of NiAl-9Mo eutectic alloy has been studied in an effort to understand the characteristic that the alloy exhibits of the low stress exponent of 4.75 and the high apparent activation energy of 410 kJ/mol during the steady-state creep of under the test conditions. The material exhibits threshold behavior with a threshold stress of 17.9 MPa. TEM observation reveals that the creep deformation is mainly governed by dislocation climb in NiAl matrix phase. Large recoverable strain is observed after unloading under the transient creep and increases with the increase of stress or temperature. It exhibits an activation energy 232 kJ/mol, suggesting the processes is controlled by the flow behavior of the matrix phase. The apparent creep activation energy under constant stress is a combination of the creep flow activation energy of the matrix and the activation energy for the damage process at the phase interface.
KeywordNiAl-based eutectic alloy creep threshold stress transient creep
Indexed BySCI
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000221863900058
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Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorRen, WL
Affiliation1.Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Key Lab High Temp Mat & Tests, Minist Educ, Shanghai 200030, Peoples R China
2.Chinese Acad Sci, Met Res Inst, Dept Superalloys, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Ren, WL,Guo, JT,Li, GS,et al. Creep characteristic of NiAl-9Mo eutectic alloy[J]. MATERIALS TRANSACTIONS,2004,45(5):1731-1737.
APA Ren, WL,Guo, JT,Li, GS,&Wu, JS.(2004).Creep characteristic of NiAl-9Mo eutectic alloy.MATERIALS TRANSACTIONS,45(5),1731-1737.
MLA Ren, WL,et al."Creep characteristic of NiAl-9Mo eutectic alloy".MATERIALS TRANSACTIONS 45.5(2004):1731-1737.
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