摘要
采用真空感应熔炼法制备了Fe_(0.5)MnNi_(1.5)CrNb_(x)(x=0,0.05,0.1,摩尔比)高熵合金,并分析了不同Nb含量对其组织和力学性能的影响。结果表明,不含Nb元素的合金具有单相fcc结构,其抗拉强度和断裂延伸率(即延展性)分别为519 MPa和47%。添加少量的Nb(x=0.05)后出现(200)织构和少量Fe_(2)Nb Laves相,合金的延展性增加到55%,并且抗拉强度增加到570 MPa。当Nb含量增加到x=0.1时,织构减少,而Fe_(2)Nb Laves相增多,抗拉强度和延展性分别为650 MPa和45%。
Fe_(0.5)MnNi_(1.5)CrNb_(x)(x=0,0.05,0.1,molar ratio)high-entropy alloys were prepared by vacuum induction melting.The effect of Nb content on the microstructure and mechanical properties of the new alloy was analyzed.The results show that the Nb-free alloy has a single-phase fcc structure,and its tensile strength and elongation to failure(i.e.,ductility)are 519 MPa and 47%,respectively.With the addition of Nb(x=0.05),the(200)texture and Fe_(2)Nb Laves phase appear.The ductility of alloy increases to 55%,while the tensile strength increases to 570 MPa.When the molar ratio of Nb increases to 0.1,the texture diminishes,whereas the volume fraction of the Fe_(2)Nb phase is increased.The resultant tensile strength and ductility are 650 MPa and 45%,respectively.
作者
赵晨朦
伍昊
张继峰
朱和国
谢宗翰
Zhao Chenmeng;Wu Hao;Zhang Jifeng;Zhu Heguo;Xie Zonghan(College of Materials Science and Engineering,Nanjing University of Science and Technology,Nanjing 210094,China;School of Mechanical Engineering,University of Adelaide,SA 5005,Australia)
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2021年第8期2783-2788,共6页
Rare Metal Materials and Engineering
基金
Science and Technology Advancement Project in Jiangsu Province(BE2018753/KJ185629)
National Natural Science Foundation of China(51571118,51371098)
2020 Extracurricular Academic Research Fund for College Students of Nanjing University of Science and Technology。
