Quick Search:       Advanced Search
代言,陈先华,徐笑阳,赵超越,刘春全,赵娣,刘晓芳,罗铸,涂滕,潘复生.轧制和退火态的Mg-Y-Zr-xNd合金的组织和力学性能[J].稀有金属材料与工程(英文),2019,48(7):2099~2106.[Dai Yan,Chen Xianhua,Xu Xiaoyang,Zhao Chaoyue,Liu Chunquan,Zhao Di,Liu Xiaofang,Luo Zhu,Tu Teng and Pan Fusheng.Microstructure and Mechanical Properties of Rolled and Annealed Mg-Y-Zr-xNd Alloys[J].Rare Metal Materials and Engineering,2019,48(7):2099~2106.]
Microstructure and Mechanical Properties of Rolled and Annealed Mg-Y-Zr-xNd Alloys
Download Pdf  View/Add Comment  Download reader
Received:June 21, 2018  Revised:September 12, 2018
DOI:
Key words: Mg-Y-Zr-Nd alloys  microstructure  mechanical properties  recrystallization
Foundation item:中国科学院重点资助项目,国家自然科学基金项目(面上项目,重点项目,重大项目),中央高校基础研究资助项目
Author NameAffiliation
Dai Yan,Chen Xianhua,Xu Xiaoyang,Zhao Chaoyue,Liu Chunquan,Zhao Di,Liu Xiaofang,Luo Zhu,Tu Teng and Pan Fusheng  
Hits: 112
Download times: 0
Abstract:
      Microstructures and mechanical properties of Mg-5Y-0.6Zr-xNd (x=0, 0.5 and 1wt.%) alloys under various heat treatment conditions were investigated by optical microstructure (OM), scanning electron microscope (SEM), X-ray diffraction (XRD), electron backscatter diffraction (EBSD) and tensile tests. Results showed that with increasing content of Nd, the amount of second phases Mg24Y5 and Mg14Nd2Y (β) was increased in the matrix. Minor Nd addition can reduce the stacking fault energy of α-Mg and promote the dynamic recrystallization during hot-rolled process. As the Nd content increases, the volume fraction of static recrystallization was promoted obviously. The average grain size of Mg-5Y-0.6Zr-0Nd alloy after annealed treatment can be refined to 3.73 μm. Tensile strength of as-rolled alloys increased with the addition of Nd, while the elongation exhibited an opposite change tendency. As-rolled alloy sheet with 1.01 wt.% Nd exhibited the remarkable mechanical properties, which the values of ultimate tensile strength, yield strength and elongation were 336 MPa, 278 MPa and 16.3%, respectively. Based on the microstructure observation, the changes of mechanical properties have been discussed.