Excellent strength-ductility combination in Co_(36)Cr_(15)Fe_(18)Ni_(18)Al_(8)Ti_(4)Mo_(1)multi-principal element alloys by dual-morphology B2 precipitates strengthening

作     者：X.S.Liu R.Li X.F.Fan Q.Q.Liu X.Tong A.X.Li S.Xu H.Yang S.B.Yu M.H.Jiang C.Huo P.F.Yu M.T.Dove G.Li X.S.Liu;R.Li;X.F.Fan;Q.Q.Liu;X.Tong;A.X.Li;S.Xu;H.Yang;S.B.Yu;M.H.Jiang;C.Huo;P.F.Yu;M.T.Dove;G.Li

作者机构：State Key Laboratory of Metastable Materials Science and TechnologyYanshan UniversityQinhuangdao 066004China College of Computer ScienceSichuan UniversityChengdu 610065China School of Physical and Chemical SciencesQueen Mary University of LondonMile End RoadLondon E14NSUnited Kingdom School of Mechanical EngineeringDongguan University of TechnologyDongguan 523808China 

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

年 卷 期：2023年第134卷第3期

页      面：60-66页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：supported by the Central Guidance on Local Science and Technology Development Fund of Hebei Province(No.216Z1012G) the National Natural Science Foundation of China(No.12174274) 

主　　题：Multi-principal element alloys B2 precipitates Heterogeneous nucleation Precipitation strengthening 

摘      要：Precipitation strengthening provides one of the most widely-used mechanisms for strengthen-ing multi-principal-element alloys(MPEAs).Here,we report dual-morphology B2 precipitates in Co_(36)Cr_(15)Fe_(18)Ni_(18)Al_(8)Ti_(4)Mo_(1)MPEA obtained by thermo-mechanical *** microscopy charac-terization reveals that the dual-morphology B2 precipitates are either recrystallized B2 particles formed at the grain boundaries or triple junctions with recrystallization process,or rod-like within the non-recrystallized FCC *** dual-morphology B2 precipitates enhance the yield strength and ultimate tensile strength up to 1120 MPa and 1480 MPa,*** work suggests the mechanical proper-ties of the alloy can be optimized by B2 precipitation strengthening to meet the needs of engineering applications.