孙文宇,田保红,张毅,周孟,梁胜利

• 1:有色金属新材料与先进加工技术省部共建协同创新中心
• 2:河南省有色金属材料科学与加工技术重点实验室

摘要(Abstract)：

利用真空电弧炉制备了AlCrMnFeNiCu_x(x=1.0, 0.8, 0.6)高熵合金，并用场发射扫描电镜、X射线衍射仪和显微硬度仪等研究了铸态和400、800℃退火4 h后合金的微观组织、相结构和维氏硬度，用UMT-2多功能摩擦试验机研究了合金的干摩擦磨损性能。结果表明：退火处理后，合金的晶体结构未发生改变，均由两个BCC相和一个FCC相组成，即Fe-Cr(BCC)固溶体、Al-Ni(B2)固溶体和富Cu(FCC)固溶体。随着Cu含量的减少，合金的硬度逐渐增加；AlCrMnFeNiCu_(0.6)合金经过400℃退火4 h后的硬度最高，为486 HV10,耐磨性也最佳，磨损率为1.1×10~(-3) mm~3·N~(-1)·m~(-1)。摩擦磨损形貌表明合金的磨损机制均为粘着磨损和磨粒磨损。

关键词(KeyWords)： 高熵合金;微观组织;力学性能;摩擦磨损

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(52071134);; 河南省优秀人才创新基金(ZYQR201912164);; 河南省高等学校重点科研项目(21A430013);; 河南省自然科学基金(202300410144)

作者(Author): 孙文宇,田保红,张毅,周孟,梁胜利

DOI: 10.13289/j.issn.1009-6264.2021-0524

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