Microstructure and mechanical properties with different sintering temperature of AZ91D alloy  

作　　者：Limin Li Huanqing Li Pengya Lei Wei Liu Liwen Chen Hua Hou Yuhong Zhao 

机构地区：[1]School of Materials Science and Engineering,Collaborative Innovation Center of Ministry of Education and Shanxi Province for High-performance Al/Mg Alloy Materials,North University of China,Taiyuan 030051,China [2]Beijing Advanced Innovation Center for Materials Genome Engineering,University of Science and Technology Beijing,Beijing 100083,China [3]School of Materials Science and Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China [4]Institute of Materials Intelligent Technology,Liaoning Academy of Materials,Shenyang 110004,China

出　　处：《Journal of Magnesium and Alloys》2025年第2期697-708,共12页镁合金学报(英文)

基　　金：supported by the National Natural Science Foundation of China(Nos.52074246,22008224,52275390,52205429,52201146);National Defense Basic Scientific Research Program of China(Nos.JCKY2020408B002,WDZC2022-12);Key Research and Development Program of Shanxi Province(202102050201011,2022ZDYF035);Science and Technology Major Project of Shanxi Province(20191102008,20191102007);Guiding Local Science and Technology Development Projects by the Central Government(YDZJSX2022A025,YDZJSX2021A027).

摘　　要：The regulation of sintering temperature in spark plasma sintering enables the achievement of grain refinement,phase control,and performance enhancement in the preparation of AZ91D magnesium alloy.This study investigates the influence of sintering temperature on microstructural evolution and mechanical properties of the AZ91D alloy.Microstructural analysis was conducted using scanning electron microscopy,electron backscatter diffraction,and X-ray diffraction.Microscopic structures and mechanical behaviors were examined through hardness and tensile tests.Elevated sintering temperatures resulted in reduced secondary phase content,leading to a decrease in mechanical performance.The alloy exhibited optimal mechanical properties at 320℃.The nanoparticle coarsening process and particle evolution during sintering were simulated using phase field methods.By optimizing the sintering temperature,precise control over microstructural and textural evolution can be achieved,facilitating the attainment of desired hardness levels and mechanical properties.

关 键 词：AZ91D alloy Mechanical properties Phase-field method Microstructure evolution 

分 类 号：TG146.22[一般工业技术—材料科学与工程]