铸造工艺对VW63Z镁合金圆盘铸件的内部质量、显微组织及力学性能的影响  

The Effect of Casting Technology on the Internal Quality,Microstructure,and Mechanical Properties of VW63Z Magnesium Alloy Disk Castings

作　　者：李蒙 古金涛 潘龙 褚杰 陈惠风[2] 张旭亮 邹文兵 李宝辉[2] LI Meng;GU Jin-tao;PAN Long;CHU Jie;CHEN Hui-feng;ZHANG Xu-liang;ZOU Wen-bing;LI Bao-hui(Xinjiang Technology(Jiangsu)Co.,Ltd.,Nantong 226100,Jiangsu,China;Shanghai Aerospace Precision Machinery Research Institute,Shanghai 201600,China)

机构地区：[1]新江科技(江苏)有限公司,江苏南通226100 [2]上海航天精密机械研究所,上海201600

出　　处：《铸造》2024年第6期768-773,共6页Foundry

摘　　要：采用ProCAST软件仿真模拟,光学显微镜观察和室温拉伸试验等方法研究了铸造工艺对VW63Z镁合金圆盘铸件的内部质量、显微组织和力学性能的影响。结果显示:重力铸造的圆盘铸件上存在疏松和夹渣缺陷,反重力铸造的圆盘铸件上没有夹渣、疏松以及微裂纹等铸造缺陷。显微组织分析结果显示:重力铸造的圆盘铸件显微组织不均匀,平均晶粒尺寸达到95μm;反重力铸造的圆盘铸件显微组织比较均匀,平均晶粒尺寸仅为70μm。力学性能测试结果显示:反重力浇注的圆盘铸件的力学性能更高,室温条件下的本体平均抗拉强度、平均屈服强度和断后伸长率分别为315.75 MPa、215.50 MPa和6.90%,160℃条件下的本体平均抗拉强度、平均屈服强度和断后伸长率分别为295.75 MPa、196.75 MPa和9.85%。The ProCAST software simulation,optical microscope observation,and room temperature tensile experiments were used to study the effect of casting process on the internal quality,microstructure,and mechanical properties of VW63Z magnesium alloy disk castings.The results showed that there were looseness and slag inclusion defects on the disc casting of gravity casting,while the slag inclusion,looseness,micro-crack and other casting defect were not found on the disc casting of anti-gravity casting.The microstructure analysis results showed that the microstructure of the gravity cast disc casting was uneven,and the average grain size was 95μm.The microstructure of the disc cast by anti-gravity casting was more uniform,and the average grain size was only 70μm.The mechanical properties test results indicated that the mechanical properties of the disc casting cast by anti-gravity casting were the highest,and the average tensile strength,average yield strength and elongation at room temperature were 315.75 MPa、215.50 MPa and 6.90%,respectively;the average tensile strength,average yield strength,and elongation after at 160℃ were 295.75 MPa、196.75 MPa,and 9.85%,respectively.

关 键 词：VW63Z 镁合金 显微组织 力学性能 重力铸造 反重力铸造 

分 类 号：TG146.2[一般工业技术—材料科学与工程] TG113[金属学及工艺—金属材料]