Mechanical Properties Improvement of AlCrFeNi_2Ti_(0.5) High Entropy Alloy through Annealing Design and its Relationship with its Particle-reinforced Microstructures

作     者：Li Jiang Hui Jiang Yiping Lu Tongmin Wang Zhiqiang Cao Tingju Li 

作者机构：School of Materials Science and EngineeringDalian University of Technology 

基　　金：supported by the National Natural Science Foundation of China(Nos.51134013,51071035,51375070 and 51104029) the Fundamental Research Funds for the Central Universities 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2015年第31卷第4期

页      码：397-402页

摘      要：High entropy alloy has attracted increasing ***,to enhance the alloy strength often leads to impairment of the ductility,or vice *** we reported a heat treatment approach on AlCrFeNi2Ti0.5 high entropy alloy,which can elevate the strength and ductility *** ingot of AlCrFeNi2Ti0.5 weighing 2.5 kg was firstly fabricated by medium frequency induction *** samples from the same height of the bulk ingot were annealed for 6 h at 600,700,800 and 1000 ℃,*** 1000 ℃ annealing,an optimal microstructure was obtained by using our approach which can make some precipitation particles distribute homogeneously in the dendrite interior while keep the interdendrite structure as a single solid solution *** mechanical test on this AlCrFeNi2Ti0.5 alloy sample showed that,the compressive fracture strength σbc was increased by about600 MPa and the plastic strain ep was doubled,compared with those of the as-cast *** approach can be readily adapted to large-scale industrial production of high entropy alloys with high strength and ductility by proper annealing treatment.

主 题 词：High entropy alloy Heat treatment Microstructure M 

学科分类：080503[080503] 08[工学] 080502[080502] 0805[工学-能源动力学] 0802[工学-机械学] 080201[080201] 

核心收录：

D　O　I：10.1016/j.jmst.2014.09.011

馆 藏 号：203186304...