文献类型：期刊文献

英文题名：Effects of La and Y on the microstructure and mechanical properties of NbMoTiVSi0.3 refractory high entropy alloys

作者：Xie, Tianjin Jin, Fengshuo Qin, Jiaqing Qin, Lei Long, Shaolei Yi, Yanliang Zhou, Shengfeng

第一作者：Xie, Tianjin

通信作者：Yi, YL[1];Zhou, SF[1]

机构：[1]Jinan Univ, Inst Advance Wear & Corros Resistant & Funct Mat, Guangzhou 510632, Guangdong, Peoples R China;[2]Jinan Univ, Shaoguan Res Inst, Shaoguan 512027, Guangdong, Peoples R China;[3]Guizhou Inst Technol, Sch Mech Engn, Guiyang 550003, Peoples R China

第一机构：Jinan Univ, Inst Advance Wear & Corros Resistant & Funct Mat, Guangzhou 510632, Guangdong, Peoples R China

通信机构：corresponding author), Jinan Univ, Inst Advance Wear & Corros Resistant & Funct Mat, Guangzhou 510632, Guangdong, Peoples R China.

年份：2023

卷号：931

外文期刊名：JOURNAL OF ALLOYS AND COMPOUNDS

收录：;EI(收录号：20224212983649);Scopus(收录号：2-s2.0-85140272522);WOS:【SCI-EXPANDED(收录号:WOS:000883765200001)】；

基金：This work was financially supported by National Natural Science Foundation of China (Grant No. 52005217, 92166112, 51261027, 52001137) , Basic Scientific Research Projects of Central Universities (No.21620344) , Basic and Applied Basic Research Fund Project of Guangdong Province in China (Grant No. 2020B1515420004, 2021A1515010523 and 2020A1515110020) , Project of MOE Key Lab of Disaster Forecast and Control in Engineering in Jinan University (Grant No. 20200904006) , Guangxi Key Laboratory of Information Materials (Grant No. 2110 03-K) , Open Project Program of the State Key Laboratory of Mechanical Transmissions in Chongqing University (Grant No. SKLMT-MSKFKT-202102) , Open Project Program of Wuhan National Laboratory for Optoelectronics (Grant No. 2021WNLOKF010) , Fundamental Research Funds for the Central Universities (Grant No. 21622110) , and University Research Platform and Research Projects of Guangdong Education Department (2022ZDZX3003) .

语种：英文

外文关键词：Refractory high entropy alloy; Microstructure; Mechanical properties

摘要：Effects of La and Y on the phase composition, microstructure and mechanical properties of NbMoTiVSi0.3 RHEAs were systematically studied. The results show that all the alloys consist of BCC and M5Si3 phases, and most of La and Y distribute at the grain boundary. With the addition of La and Y, the morphology of M5Si3 phase changes from large net-like structure to spherical and blocky structure, meanwhile the H, E and H3/E2 of BCC and M5Si3 phases are improved. The yield strength of RHEAs increases from 1641.10 MPa to 1920.93 MPa for 0.5 at.% La and 1991.59 MPa for 0.5 at.% Y, respectively. Meanwhile, the compression plasticity of RHEAs increases from 12.68 % to 16.82 % for 0.5 at.% La and 16.58 % for 0.5 at.% Y, respectively. The specific strength of the three RHEAs are 236.81, 277.59, 287.80 MPamiddotcm3/g, respectively. The addition of La and Y is beneficial to the mechanical properties of NbMoTiVSi0.3 RHEA, especially for the Y addition.(c) 2022 Elsevier B.V. All rights reserved.