张啸凡,李传维,廖瑜,宋逸思,顾剑锋

• 1:上海交通大学材料科学与工程学院
• 2:上海市激光制造与材料改性重点实验室

摘要(Abstract)：

通过直接激光沉积制备了3种不同层厚的叠层Fe_(75)(CoCrNi)_(25)/Fe_(60)(CoCrNi)_(40)铁基中熵合金，利用光学显微镜、扫描电镜、透射电镜和万能材料试验机等研究了不同层厚叠层铁基中熵合金的显微组织与力学性能，并分析了其强韧化机制。结果表明：层间无明显Fe元素稀释，3种层厚样品中的两种原料的体积比相近，EBSD结果表明叠层厚度对合金的显微组织无明显影响；随着层厚的降低，叠层铁基中熵合金的强度大幅度提高且伸长率损失较小，对比混合物法则计算的理论值，强度和伸长率均有提高；低层厚合金优异的力学性能来自于异质变形强化、应变硬化以及相变诱发塑性效应。

关键词(KeyWords)： 铁基中熵合金;叠层材料;直接激光沉积

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(52171042);; 国家科技重大专项(J2019-VI-0004-0117)

作者(Author): 张啸凡,李传维,廖瑜,宋逸思,顾剑锋

DOI: 10.13289/j.issn.1009-6264.2024-0526

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