Oxide-induced crack closure: an explanation for abnormal time-dependent fatigue crack propagation behavior in INCONEL alloy 783

被引:14
|
作者
Ma, LZ [1 ]
Chang, KM
Mannan, SK
机构
[1] Univ Nevada, Harry Reid Ctr Environm Studies, Las Vegas, NV 89154 USA
[2] W Virginia Univ, Dept Mech & Aerosp Engn, Morgantown, WV 26506 USA
[3] Special Met Corp, Huntington, WV 25705 USA
关键词
crack closure; fatigue; oxides; fracture; scanning electron microscopy;
D O I
10.1016/S1359-6462(02)00476-1
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
INCONEL(R) (trademark of Special Metals Corporation) alloy 783 was subjected to the fatigue crack growth under sinusoidal and hold-time waveform conditions at 650 degreesC in air. Interestingly, alloy 783 did not display full time-dependent fatigue crack propagation (FCP) with increase in the hold time. The oxide-induced crack closure is thought to be responsible for the abnormal time-dependent FCP behavior. (C) 2002 Acta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:583 / 588
页数:6
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