Microstructure and mechanical properties of Mg-3Sn-1Ca reinforced with AlN nano-particles  

作　　者：Shaozhu Wang Yuanding Huang Lixiang Yang Ying Zeng Yaozeng Hu Xiao Zhang Qiang Sun Shaojun Shi Guangyao Meng Norbert Hort 

机构地区：[1]School of Mechanical&Automotive Engineering,Qingdao University of Technology,Tsingtao 266520,PR China [2]MagIC-Magnesium Innovation Center,Helmholtz-Zentrum Geesthacht,Max-Planck-Strasse 1,Geesthacht 21502,Germany [3]Linyi Institute of Industrial Technology,Linyi 276000,PR China [4]Shanghai Key Lab of Advanced High-temperature Materials and Precision Forming and State Key Lab of Metal Matrix Composites,School of Materials Science and Engineering,Shanghai Jiao Tong University,Shanghai 200240,PR China [5]Key Laboratory of Advanced Technologies of Materials,Ministry of Education,School of Material Science and Engineering,Southwest Jiaotong University,Chengdu 610031,PR China [6]Shandong Yinguang Yuyuan Light Metal Precise Forming Co.,Ltd,Shandong 273400,PR China

出　　处：《Journal of Magnesium and Alloys》2023年第1期259-269,共11页镁合金学报（英文）

基　　金：financially supported by the Study Abroad Program by the Government of Shandong Province(201802005);Linyi Industrial Technology Research Institute and Shandong Yinguang Yuyuan Light Metal Precise Forming Co.,Ltd。

摘　　要：Microstructural evolution and strengthening mechanisms of Mg-3Sn-1Ca based alloys with additions of different amounts of Al N nanoparticles were investigated.It was found that with increasing the amount of AlN nano-particles the grain size decreases obviously.The existence of AlN nano-particles could refine the primary crystal phases CaMgSn,which provided more heterogeneous nucleation sites for the formation of magnesium.Moreover,such nano-particles could also restrict the grain growth during solidification.After adding AlN nano-particles,both the tensile properties at room temperature and high temperature 250℃and the hardness are largely improved.The improvement of strength is attributed to grain refinement and second phase refinement.

关 键 词：Mg-Sn-Ca alloy AlN nano-particles Microstructure Strengthening mechanisms Grain refinement 

分 类 号：TG146[一般工业技术—材料科学与工程]