Fatigue, creep and creep/fatigue behaviour of a Ti-base superalloy at 650° C

被引：0
|
作者：
Hyde, TH [1 ]
Becker, AA [1 ]
Xia, L [1 ]
机构：
[1] Univ Nottingham, Dept Mech Engn, Nottingham NG7 2RD, England
来源：
LIFE ASSESSMENT AND LIFE EXTENSION OF ENGINEERING PLANT, STRUCTURES AND COMPONENTS | 1996年
关键词：
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The fatigue. creep and creep/fatigue interaction behaviour of a Ti-base superalloy, at 650 degrees C, has been experimentally determined. The monotonic: and cyclic stress-strain behaviour and the fatigue properties are presented. Results of uniaxial and notched bar creep tests have been used to establish a multiaxial continuum damage creep constitutive equation for the material. Under uniaxial conditions, fatigue loading does not significantly affect the creep life hut for notched bars the creep life is slightly reduced by fatigue loading. Fatigue crack growth data from compact-tension and corner-cracked specimens correlate and exhibit the usual behaviour. with a Paris-law fit to the stage II crack growth region. The material was found to he resistant to Il ccp crack growth and creep dwell periods did not significantly after the fatigue crack; growth properties of the material.
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页码：83 / 93
页数：11
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