A357履带板的半固态触变成形工艺研究  

SEMI SOLIDTHIXOFORMING PROCESS OF A357 TRACK SHOE

作　　者：牛海侠 朱松波 张琼 NIU Hai-xia;ZHU Song-bo;ZHANG Qiong(Anhui Sanlian University,School of Mechanical Engineering,Hefei Anhui,230601,China;Tianjin Tianjin Institute of Computing Technology,Tianjin 300000,China)

机构地区：[1]安徽三联学院机械工程学院,安徽合肥230601 [2]天津津航计算技术研究所,天津300000

出　　处：《井冈山大学学报（自然科学版）》2020年第6期67-72,共6页Journal of Jinggangshan University (Natural Science)

基　　金：安徽省教育厅高校自然科学重点项目(KJ2019A0892);安徽省高校优秀拔尖人才培育项目(gxgnfx2019071);安徽三联学院科研基金重点课题(KJZD2018007)。

摘　　要：采用半固态触变成形实验,对履带板件进行了模具设计、成形工艺参数制定,成功制得A357铝合金履带板件。并通过拉伸试验和微观组织观察,研究了T6热处理工艺对零件的力学性能和微观组织的影响。试验结果表明:经过T6热处理工艺,过饱和的基体中不断析出强化相Mg2Si并高度弥散分布在晶粒内部与晶界处,零件的强度得到较大提高。In this paper,a semi-solid thixoforming experiment was used.The mold design and forming process parameters of the track shoe were made,which successfully produced A357 aluminum alloy track plate.Through the tensile test and microstructure observation,the effect of T6 heat treatment process on the mechanical properties and microstructure of the parts were studied.The results showed that,after T6 heat treatment process,in the supersaturated matrix,the strengthening phase Mg2Si was continuously precipitated and distributed highly within the grain and at the grain boundary,thus the strength of the parts was greatly improved.

关 键 词：A357 半固态触变成形 金相组织 力学性能 

分 类 号：TG146.3[一般工业技术—材料科学与工程]