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首页> 外文期刊>Journal of Materials Engineering and Performance >Tensile Properties of Martensitic Stainless Steels at Elevated Temperatures
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Tensile Properties of Martensitic Stainless Steels at Elevated Temperatures

机译：马氏体不锈钢在高温下的拉伸性能

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摘要

Tensile properties of quenched and tempered martensitic alloys EP-823, HT-9, and 422 were evaluated at temperatures ranging from ambient to 600 deg C as a function of three different tempering times. The results indicated that the yield strength, ultimate tensile strength, and the failure strength were gradually reduced with increasing temperature. The ductility parameters were enhanced at elevated temperatures due to increased plastic flow. However, the tempering time did not significantly influence these properties. The evaluation of the fracture surfaces by scanning electron microscopy revealed reduced cracking and dimpled microstructures, indicating enhanced ductility at higher testing temperatures.
机译：淬火和回火马氏体合金EP-823，HT-9和422的拉伸性能是在环境温度至600摄氏度范围内随三个不同回火时间而变化的。结果表明，随温度升高，屈服强度，极限抗拉强度和破坏强度逐渐降低。由于增加的塑性流动，在高温下延展性参数得以提高。但是，回火时间并未显着影响这些性能。通过扫描电子显微镜对断裂表面的评估显示出裂纹的减少和微观结构的凹陷，表明在更高的测试温度下延展性增强。

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