Creep behavior of two-phase NiAl-9Mo eutectic alloy
Ren, WL; Guo, JT; Zhou, JY
Corresponding AuthorGuo, JT()
AbstractThe tensile creep behaviors of HIPed NiAl-9Mo eutectic alloy are investigated in the temperature range from 850 to 950 degreesC under the applied stress of 50-100 MPa. All the creep curves exhibit similar shapes: very short primary creep and long steady-state creep stages. The steady-state creep rate is found to depend on the applied stress and temperature. The power law stress exponent for steady state creep is determined to be 4.75+/-0.25 and apparent activation energy for creep to be 410.5+/-4.5 kJ/mol. The nucleation and propagation of creep cracks cause the beginning of the third creep stage. The creep fracture data can be described by the Monkman-Grant relationship. The alloy fails mainly by intergranular creep fracture and small partially by ductile fracture. The proportion of the former decreases as increasing stress at the same temperature.
KeywordNiAl eutectic alloy creep behavior tensile creep fractography
Indexed BySCI
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000178667600003
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Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorGuo, JT
Affiliation1.Chinese Acad Sci, Met Res Inst, Shenyang 110016, Peoples R China
2.Dalian Univ Technol, Dept Mat Engn, Dalian 116024, Peoples R China
Recommended Citation
GB/T 7714
Ren, WL,Guo, JT,Zhou, JY. Creep behavior of two-phase NiAl-9Mo eutectic alloy[J]. ACTA METALLURGICA SINICA,2002,38(9):908-913.
APA Ren, WL,Guo, JT,&Zhou, JY.(2002).Creep behavior of two-phase NiAl-9Mo eutectic alloy.ACTA METALLURGICA SINICA,38(9),908-913.
MLA Ren, WL,et al."Creep behavior of two-phase NiAl-9Mo eutectic alloy".ACTA METALLURGICA SINICA 38.9(2002):908-913.
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