Microstructure and mechanical properties of Mg-4Zn-xGd(x=0,0.5,1,2)alloys

作     者：Cui-ju Wang Jin-wen Kang Kun-kun Deng Kai-bo Nie Wei Liang Wei-guo Li Cui-ju Wang;Jin-wen Kang;Kun-kun Deng;Kai-bo Nie;Wei Liang;Wei-guo Li

作者机构：Shanxi Key laboratory of advanced magnesium-based materialsCollege of Materials Science and EngineeringTaiyuan University of TechnologyTaiyuan 030024PR China Engineering training centerTaiyuan University of TechnologyTaiyuan 030024PR China 

出 版 物：《Journal of Magnesium and Alloys》 (镁合金学报（英文）)

年 卷 期：2020年第8卷第2期

页      面：441-451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：This work was supported by"National Natural Science Foundation of China"(Grant nos.51771128,51771129 and 51201112) Projects of International Cooperation in Shanxi(Grant no.201703D421039) Shanxi province science and technology major projects(20181101008) The authors also thank to the Support from Program for the Outstanding Innovative Teams of Higher Learning Institutions of Shanxi,and the Special Fund Project for Guiding Local Science and Technology Development by the Central Government(YDZX20191400002734) 

主　　题：Magnesium alloy Dynamic recrystallization Dynamic precipitation Microstructure Mechanical properties 

摘      要：The present work inainly focuses on tlie effect of minor cofiteut of Gd cicmcnt on the micrGstmcturc and mechanical properties of Mg Zn *** Mg-4Zn-xGd(x=0,0.5,1,2)alloys were fabricated and subjected to extrusion at 280℃ with the ratio of 25:*** revealed that the addition of Gd could inhibit the dynamic recrystallization(DRX)of Mg-4Zn alloy,and both the size and volume fraction of DRXed grains demonstrated a decreasing tendency as the Gd content increased from 0.5 to 2 wt.%.It is the weakening effect on DRX behavior that lead to the smaller amount of fine precipitate and the stronger texture *** compared with the Mg-4Zn alloy,the yield strength and ultimate tensile strength of Mg-4Zn-xGd alloys were improved obviously by the addition of minor content of Gd,however,at the expense of *** tensile properties with the yield strength of〜369.8 MPa and ultimate tensile strength of〜400.3 MPa were obtained when the Gd content was 2 wt.%.