程靓,徐泰然,汪晓天,胡瑶瑶,马毅,操振华

• 1:南京工业大学材料科学与工程学院
• 2:南京工业大学先进轻质高性能材料研究中心
• 3:微旷科技(苏州)有限公司

摘要(Abstract)：

采用真空悬浮感应熔炼法制备了FeCrNi(AlTi)_x(x=0、0.2、0.34和0.49)双相中熵合金，研究Al和Ti含量变化以及均匀热化处理对合金微观结构和力学性能的影响。结果表明：随着Al、Ti含量的增加，合金的相结构由FCC单相结构转变成FCC和BCC的双相结构，且随着Al、Ti含量的增加，BCC相的体积分数明显增加，合金的压缩屈服强度和硬度显著增加。均匀化热处理之后，FeCrNi(AlTi)_(0.2)合金的屈服强度和极限抗拉强度分别达到了519和852 MPa,伸长率提升到了17.2%,均匀化热处理使得铸态合金中部分元素的偏析能够均匀分布在基体中，从而实现了合金的强度和塑性的同步提升。

关键词(KeyWords)： 中熵合金;双相结构;力学性能;均匀化处理

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(52071176);; 江苏高校优势学科建设工程

作者(Author): 程靓,徐泰然,汪晓天,胡瑶瑶,马毅,操振华

DOI: 10.13289/j.issn.1009-6264.2023-0342

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