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首页> 外文期刊>Journal of Materials Engineering and Performance >Study of Fatigue Crack Growth Rate for Austenitic Fe-Al-Mn Alloys
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Study of Fatigue Crack Growth Rate for Austenitic Fe-Al-Mn Alloys

机译：奥氏体Fe-Al-Mn合金的疲劳裂纹扩展速率研究

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摘要

A study was made of the crack growth rate (dajdN) versus stress-intensity variation (triangle open K) behavior of Fe-Al-Mn alloys with different percentages of carbon, aluminum, and manganese at ambient temperature. The experimental results are described with respect to a Paris equation, da/dN = C(triangle open K)~n, where the exponent n, index for crack growth resistance of materials, was strongly influenced by alloy composition. It was found that higher manganese content provided better crack growth resistance, and that carbon and aluminum had an opposite effect. Scanning electron microscopy, x-ray diffraction, and mechanical properties evaluation were performed and correlated to the change of n values.
机译：研究了在室温下具有不同百分比的碳，铝和锰的Fe-Al-Mn合金的裂纹扩展速率（dajdN）与应力强度变化（三角形开放K）行为的关系。关于巴黎方程da / dN = C（三角形开口K）〜n描述了实验结果，其中合金的成分强烈影响材料的抗裂纹扩展指数n。发现较高的锰含量提供更好的抗裂纹扩展性，并且碳和铝具有相反的作用。进行了扫描电子显微镜，X射线衍射和机械性能评估，并与n值的变化相关。

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