徐云峰,黄峰,张恒康,袁玮,邱耀,刘静

• 1:武汉科技大学省部共建耐火材料与冶金国家重点实验室
• 2:武汉科技大学湖北省海洋工程材料及服役安全工程技术研究中心

摘要(Abstract)：

采用真空磁悬浮炉熔炼了Al_(0.25)CrFeMn_(1.3)Ni高熵合金，利用场发射扫描电镜、X射线衍射和场发射电子探针显微分析等研究了不同温度时效处理对其显微组织及耐磨性能的影响。结果表明：铸态合金的组织由Cr-Mn-Fe-Ni FCC相基体、Al-Ni-Mn B2相粒状组织和Fe-Cr-Mn BCC相枝晶基体组成。时效处理后，枝晶基体由BCC相转变为σ(Fe-Cr)相，又因合金长时间保温出现软化，使得合金硬度随时效时间的增加先升高后降低，硬度均在时效10 h时达到峰值，随时效温度升高，合金峰值硬度降低。此外，合金表现出良好的耐磨性，磨损120 min后相较于316L不锈钢的磨损质量损失，铸态合金为其的11.9%,750℃时效10 h后合金的磨损质量损失最低，仅为其的5.7%。铸态合金以氧化磨损为主，伴随有粘着磨损和磨粒磨损，随时效温度的升高，合金磨损机理由以粘着磨损为主转变为以分层磨损为主。

关键词(KeyWords)： 高熵合金;时效处理;组织演变;耐磨性

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51871172)

作者(Author): 徐云峰,黄峰,张恒康,袁玮,邱耀,刘静

DOI: 10.13289/j.issn.1009-6264.2021-0469

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