肖茂果,吕新杨,李东辉,李绍宏,赵昆渝,杨卯生

• 1:昆明理工大学材料科学与工程学院
• 2:钢铁研究总院特殊钢所

摘要(Abstract)：

利用洛氏硬度计、扫描电镜及透射电镜等研究不同淬回火温度对高温轴承钢组织和性能的影响及强韧化机制。结果表明:实验钢回火后的硬度随回火温度升高而增加,而冲击性能不断降低;实验钢经不同温度二次回火后的硬度均高于一次回火后的硬度,且在540℃回火态下实验钢的硬度达到峰值,当回火温度超过540℃后实验钢的硬度逐渐下降;通过透射电镜分析发现,实验钢经540℃二次回火后,析出大量的M_6C型碳化物,由于析出强化导致其硬度达到峰值;随着回火温度的升高,冲击断口中典型韧窝逐渐减少,断裂机制逐步由韧性撕裂向准解理断裂转变。

关键词(KeyWords)： 高温轴承钢;强韧化;冲击;性能

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51761022);; 昆明理工大学分析测试基金(2016T20110167,2017M20162130021)

作者(Author): 肖茂果,吕新杨,李东辉,李绍宏,赵昆渝,杨卯生

DOI: 10.13289/j.issn.1009-6264.2018-0176

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