A357铝合金的半固态触变压缩力学行为研究  

Study of the Mechanical Behavior of A357 Alloy in Thixotropic Compression

作　　者：牛海侠 朱松波 张琼 李蕾 Niu Haixia;Zhu Songbo;Zhang Qiong;Li Lei(Anhui Sanlian University,School of Mechanical Engineering,Hefei City,Anhui Province 230601;Tianjin Tianjin Institute of computing technology,Tianjin City 300000)

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：《黄河科技学院学报》2020年第5期41-46,共6页Journal of Huanghe S&T College

基　　金：安徽省教育厅高校自然科学重点项目“A357铝合金半固态触变成形研究与有限元分析”(KJ2019A0892);安徽省高校优秀拔尖人才培育资助项目(gxgnfx2019071);安徽三联学院科研基金重点课题“铝合金薄壁壳体的半固态成形技术研究”(KJZD2018007)。

摘　　要：半固态合金的最大特点是具有触变性能,深入研究半固态触变成形过程的力学行为,对于掌握半固态金属的流动规律和半固态触变成形制件的性能有着重要的意义。同时,此研究也为制定合理的半固态触变成形工艺提供重要参考。通过实验研究了A357铝合金在不同的应变速率和变形温度下受到高温压缩时的力学行为,通过实验数据绘制了A357铝合金的真应力-真应变曲线。The biggest characteristic of semi-solid alloy is thixotropy(apparent viscosity is time-dependent).In-depth study of the mechanical behavior of semi-solid thixoforming process plays an important role in mastering the flow law of semi-solid metal and the performance of semi-solid thixoforming parts.At the same time,this study also provides an important reference for the development of reasonable semi-solid thixoforming process parameters.In this paper,the mechanical behavior of A357 aluminum alloy under high temperature compression at different deformation rates and temperatures is studied by experiment.The true stress-true strain curve of A357 aluminum alloy is drawn by experiment data.

关 键 词：半固态 触变成形 A357铝合金 力学性能 

分 类 号：TG146.3[一般工业技术—材料科学与工程]