孙建,李灼,夏明六,罗来马,李景辉,黄贞益

• 1:铜陵学院机械工程学院
• 2:铜陵市特种设备监督检验中心
• 3:合肥工业大学材料科学与工程学院
• 4:安徽工业大学冶金工程学院

摘要(Abstract)：

采用扫描电镜(SEM)、X射线衍射(XRD)、电子背散射衍射(EBSD)技术、透射电镜(TEM)、维氏硬度计和电子万能实验机等研究了不同温度(950～1050℃)固溶处理对Fe30Mn10Al1C低密度钢组织和力学性能的影响，并分析了其变形机制。结果表明：固溶处理后，Fe30Mn10Al1C低密度钢的组织和力学性能变化较为明显；随着固溶温度的升高，Fe30Mn10Al1C低密度钢平均晶粒尺寸增大，奥氏体内存在着孪晶，基体内的几何必须位错密度是拉伸变形前的4～5倍。固溶处理后，Fe30Mn10Al1C低密度钢的综合力学性能相比原始态大幅提高，在950和1050℃固溶处理后的强塑积最高，分别为85.6和84.4 GPa·%。Fe30Mn10Al1C低密度钢拉伸变形后呈典型的位错滑移特征，且组织中存在着大量的位错墙、泰勒晶格和微带，提高了其强度和塑性。

关键词(KeyWords)： 低密度钢;固溶处理;微观组织;力学性能

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51674004,51805002);; 安徽省高等学校自然科学研究重点项目(2022AH051760);; 铜陵学院自然科学研究项目(2023tlxy05,2017tlxy23);铜陵学院大学生科研基金项目(2023tlxydxs090);; 工程液压机器人安徽普通高校重点实验室(铜陵学院)开放课题资助项目(TLXYCHR-O-21YB03)

作者(Author): 孙建,李灼,夏明六,罗来马,李景辉,黄贞益

DOI: 10.13289/j.issn.1009-6264.2024-0179

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