摘要
半固态合金组织的形成有两种不同的途径:枝晶球化和球形组织直接生长。经过30多年的发展,半固态合金流变成形又成为目前的研究重点。论述了双螺旋机械搅拌式流变射铸工艺、New Rheocast Processing、Semi Solid Rehoeasting、低过热度浇注和弱电磁搅拌式流变铸造、Continuous Rheoconversion Process的工艺特点和核心思想,分析了其发展前景。
Two quite different means, i.e. spheroidization of dendritic structures and direct growh of spheroidal microstructure are used to form desired structure for semi-solid forming：. Although it was studied more than three decade, semi-solid forming is becoming the hot topic once again. The technological features and essential principle of the twin-screw rehomoulding, new rheocast processing, semi solid rehocasting, low superheat pouring and weak electromagnetic stirring and continuous rheoconversion Process are reviewed respectively, and the future prospect is point out.
出处
《铸造技术》
CAS
北大核心
2007年第5期709-713,共5页
Foundry Technology
基金
国家高技术研究发展项目(No.2006AA03Z115)
国家重点基础研究规划项目(No.2006CB605203)
国家自然科学基金资助项目(No.50374012).
关键词
半固态合金
流变成形
球形组织
Semi-solid alloy
Rheoforming
Spheroidal microstructure
