Effect of hot extrusion process on microstructure and properties of wide and hollow AZ31 magnesium alloy profiles
According to the profile section of transport equipment,the wide and hollow AZ31 magnesium alloy profiles was self-designed.Extrusion molding performance of the profiles,the law of microstructure and mechanical properties were studied when billets pretreatment and extrusion temperature were changed.The conclusions are as follows:(1) The grains of AZ31 profiles extruded by pre-extrusion billet are smaller and the strength is better,its maximum tensile strength is 280MPa.(2) Other processes being equal,the grains ofAZ31 profiles are smaller and strength is higher,but the plastic is bad,when the extrusion temperature is 300℃.However,both strength and ductility ofAZ31 profiles are better,when the extrusion temperature is 350℃.(3) Wide and Hollow AZ31 profiles perform significant heterogeneity and anisotropic characteristics on mechanical properties.
AZ31 Magnesium alloy Wide and hollow profiles Extrusion process Microstructure Mechanical properties
Jiangang Lv Gaofeng Quan Ruichun Li Chunyuan Shi Yingbo Zhang Xian Xie
School of Materials Science and Engineering, Dalian Jiaotong University, Dalian, 116028, China School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610063, China
国际会议
太原
英文
116-119
2013-03-22（万方平台首次上网日期，不代表论文的发表时间）