文献类型：期刊文献

英文题名：Microstructure evolution and mechanical properties of the Mg-Sm-Gd-Zn-Zr alloy during extrusion

作者：Yuan, Ming[1,2];He, Chao[1];Zhao, Jun[3];Yang, Huabao[4];Song, Yan[1];Lei, Bin[1];Qian, Xiaoying[1];Dong, Zhihua[1];Li, Qian[1];Jiang, Bin[1];Pan, Fusheng[1]

机构：[1]Chongqing Univ, Natl Engn Res Ctr Magnesium Alloys, Chongqing 400044, Peoples R China;[2]Hubei Engn Univ, Sch Chem & Mat Sci, Xiaogan 432000, Peoples R China;[3]Hunan City Univ, Sch Mech & Elect Engn, Yiyang 413002, Peoples R China;[4]Shaoxing Univ, Sch Mech & Elect Engn, Shaoxing 312000, Peoples R China

年份：2021

卷号：15

起止页码：2518

外文期刊名：JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T

收录：SCI-EXPANDED(收录号：WOS:000709734700008)、、EI(收录号：20214010971343)、Scopus(收录号：2-s2.0-85115962819)、WOS

基金：The authors are grateful for the financial support from the National Key Research and Development Program of China (Project No.2016YFB0301104) , and the National Natural Science Foundation of China (Project No.52001037, No.U2037601, No.51971044, No.51531002 and U1764253) , the Middle-aged and Young of the Education Department of Hubei Province (Project No.Q20162703) .

语种：英文

外文关键词：Mg-Sm-Gd-Zn-Zr alloy; Extrusion; Microstructure; Texture; Strengthening

外文摘要：Mg-2.6Sm-1.3Gd-0.6Zn-0.5Zr (wt.%) alloy is prepared with metal mold casting and followed hot extruded at 400 degrees C with the extrusion ratio of 25:1. Microstructure and mechanical properties of the as-extruded alloy are investigated using optical microscope (OM), scanning electron microscope (SEM) with electron backscatter diffraction (EBSD), X-ray diffraction (XRD) and transmission electron microscope (TEM). The results show that the as-extruded alloy is fully dynamically recrystallized, which develops rare earth (RE) texture component. The as-extruded alloy shows an age-hardening response at 200 degrees C, in which there are numerous nano-scale plate strengthening phase beta' precipitated in the matrix. The as-extruded alloy in the peak-aged condition exhibits ultimate tensile strength, yield strength, and elongation of 332 MPa, 220 MPa and 22.7% at room temperature, respectively. The dominant strengthening mechanisms of the investigated alloy are fine-grain strengthening, solid solution strengthening and precipitate strengthening. (C) 2021 The Author(s). Published by Elsevier B.V.