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首页> 外文期刊>Journal of Materials Engineering and Performance >Long-Term Creep Behavior of a CoCrFeNiMn High-Entropy Alloy
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Long-Term Creep Behavior of a CoCrFeNiMn High-Entropy Alloy

机译：COCRFENIMN高熵合金的长期蠕变行为

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摘要

The potential of high-entropy alloys (HEAs) to meet or exceed austenitic stainless steel performance with the additional benefit of improved hot corrosion/oxidation resistance makes FCC HEAs attractive for use in energy applications. While shorter-term creep tests have been reported in the literature on HEAs, not all methodologies utilize repeatable techniques. This manuscript reports on over 23,500 accumulated hours of tensile creep testing with adherence to ASTM standards on a melt-solidified ingot of CoCrFeNiMn HEA converted to wrought plate using conventional thermo-mechanical processing techniques. The typical standard creep analyses are reported, i.e., Larson-Miller parameter, Monkman-Grant relationship, activation energy for creep, and creep stress exponents were calculated and compared to previously reported short-term creep tests. Additionally, characteristics of creep fracture and microstructural evolution are reported with cursory dislocation mechanisms investigated.
机译：高熵合金（HEAS）以满足或超过奥氏体不锈钢性能的潜力，具有改进的热腐蚀/抗氧化性能的额外益处使FCC HEAS具有吸引力用于能量应用。 虽然在杰斯的文献中报告了短期蠕变测试，但并非所有方法都利用了可重复的技术。 该稿件报告了超过23,500多小时的拉伸蠕变测试，遵守ASTM标准的COCRFENIMN HEA熔融固化锭的标准，使用常规的热机械加工技术将成型为锻造板。 报告了典型的标准蠕变分析，即Larson-Miller参数，Monkman-Grant关系，蠕变，蠕变的激活能量，并与先前报告的短期蠕变测试进行了比较。 另外，报告了粗裂缝脱臼机制的蠕变断裂和微观结构演化的特征。

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