C含量对增材制造(FeCoCrNi)88-xMo8WNb3Cx高熵合金成型件组织与性能的影响
Effect of C Content on Microstructure and Properties of(FeCoCrNi)88-x Mo8WNb3Cx High Entropy Alloys by Additive Manufacturing
王仪凌 1孙崇锋 1谷臻 2李晓娟 3李春雨 4席生岐 2白亚平 1何子博 1郭巧琴1
作者信息
- 1. 西安工业大学,陕西西安 710021
- 2. 西安交通大学,陕西西安 710049
- 3. 长庆油田第三采气厂,陕西西安 710018
- 4. 青岛地铁集团有限公司,山东青岛 266000
- 折叠
摘要
采用机械合金化方法与增材制造技术制备了(FeCoCrNi)88-xMo8WNb3 Cx(x=0.25、0.5、0.75、1、1.5、2、2.5)高熵合金成型件.在明确该高熵合金形成规律的基础上,进一步分析了C含量对其组织和力学性能的影响规律.结果表明:当C含量介于0.25%~2.50%(摩尔分数)之间时,(FeCoCrNi)88-xMo8WNb3Cx高熵合金均由FCC相和M6C相组成;随着C含量的增加,合金的抗压强度逐渐增加,塑性呈先增大后减小趋势;当C含量为2.00%时,合金的综合力学性能最优,其抗压强度为1 993.4 MPa,断裂应变为31.5%.
Abstract
(FeCoCrNi)88-xMo8WNb3C,(x=0.25,0.5,0.75,1,1.5,2,2.5)high entropy alloy specimens are prepared by mechanical alloying and additive manufacturing.The formation law of the high entropy alloys is clarified firstly,and then the effects of C content on their microstructures and mechanical properties are further studied.It is found out that the(FeCoCrNi)88-xMo8WNb3Cx high entropy alloy is composed of FCC and M6C phases when the C content is between 0.25%and 2.50%(mole fraction).With the increase of C content,the compressive strength of the alloy increases and the fracture strain increases at first and then decreases.When the C content is 2.00%,the compressive strength and fracture strain of the al-loy are 1 993.4 MPa and 31.5%.
关键词
高熵合金/机械合金化/增材制造/微观组织/力学性能Key words
high entropy alloy/mechanical alloying/additive manufacturing/microstructure/mechanical property引用本文复制引用
基金项目
国家自然科学基金(52201138)
陕西省自然科学基础研究计划(2021JQ-646)
发动机关键部件材料研发及应用创新团队项目(K20220185)
陕西省高等学校青年杰出人才支持计划(第五批)()
陕西省教育厅专项科研项目(21JK0688)
出版年
2024