Near-threshold fatigue crack growth behavior of nickel-titanium shape memory alloys

被引：0
|
作者：
Holtz, RL [1 ]
Sadananda, K [1 ]
Imam, MA [1 ]
机构：
[1] Geocenters Inc, Ft Washington, MD 20744 USA
来源：
JOHANNES WEERTMAN SYMPOSIUM | 1996年
关键词：
D O I：
暂无
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
We report on the initial stage of an ongoing comprehensive study of the fatigue crack growth behavior of a nickel-titanium shape-memory alloy with a martensitic transformation temperature (Ms) of 80 degrees C. Fatigue crack growth rate measurements were performed at a frequency of 10 Hz for stress ratios from 0.1 to 0.9, in both vacuum and air at room temperature. The thresholds and near-threshold crack growth behaviors are interpreted in the context of a two-threshold model which avoids relying upon ad-hoc crack closure arguments.
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页码：297 / 299
页数：3
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