双级时效对Mg-13Gd-5Y-0.6Mn-0.5Ca挤压镁合金析出相和力学性能的影响  

Effects of Two-stage Aging on the Precipitated Phases and Mechanical Properties of Mg-13Gd-5Y-0.6Mn-0.5Ca Extruded Magnesium Alloy

作　　者：韦皓博 陈洁仪 吴宗钢 阮世会 李晏 杨明波[1] WEI Haobo;CHEN Jieyi;WU Zonggang;RUAN Shihui;LI Yan;YANG Mingbo(Materials Science and Engineering College,Chongqing University of Technology,Chongqing 400054)

机构地区：[1]重庆理工大学材料科学与工程学院,重庆400054

出　　处：《特种铸造及有色合金》2024年第6期803-807,共5页Special Casting & Nonferrous Alloys

基　　金：重庆市技术创新与应用发展专项基金资助项目(cstc2019jscx-mbdxX0031,cstc2020jscx-msxmX0215)。

摘　　要：研究了双级时效对Mg-13Gd-5Y-0.6Mn-0.5Ca挤压镁合金平衡相析出和力学性能的影响。结果表明,双级时效和单级时效均可有效提升试验镁合金的室温力学性能,但前者对于试验镁合金挤压后力学性能的提升明显高于后者,伸长率从挤压态的1.8%提升到2.5%。双级时效进一步改善试验合金性能的机理为促进Mg5Gd平衡相的析出。The effects of two-stage aging on the precipitated equilibrium phases and properties of Mg-13Gd-5Y0.6Mn-0.5Ca extruded magnesium alloy were investigated.The results reveal that two-stage aging and single-stage aging can effectively improve the room temperature tensile properties of tested magnesium alloy,however the effects of two-stage aging is superior to that of single-stage aging,and elongation is increased from 1.8%to 2.5%.The mecha⁃nism for further improvement of the tested alloy by two-stage aging is characterized by promoting the aging precipita⁃tion of Mg5Gd equilibrium phase.

关 键 词：镁合金 Mg-13Gd-5Y-0.6Mn 双级时效 伸长率 

分 类 号：TG146.22[一般工业技术—材料科学与工程] TG113.25[金属学及工艺—金属材料]