铝合金半固态流变成形技术研究进展

Research Progress in Semi-solid Rheoforming of Aluminium Alloys

铝合金半固态流变成形技术具有短流程、低能耗、低成本等优势,被用于制造车辆零部件和通信设备壳体件。经过近半世纪的发展,铝合金流变成形技术研究重点已由基础问题研究转向关键技术研究和应用研究。综述了近年来铝合金流变成形技术国内外研究进展,主要围绕流变成形合金设计、半固态浆料制备方法、流变成形工艺与缺陷控制、建模与仿真、工业应用现状5个主题展开。最后,展望了该领域未来的主要研究方向和发展前景。开发适用于流变成形的新型合金,提高制浆与成形工艺的生产效率和稳定性,缩短新产品研发周期,提升产品综合性能,仍然是当下和未来的研究热点。

Owing to the low cost, short process and low energy consumption, semi-solid rheoforming of Al alloys has been extensively employed to fabricate automotive and communication products. After nearly half a century of development, the focus of rheoforming of Al alloy has transformed from basic research to key technology and application research. This paper started with reviewing the current research progress in rheoforming of aluminum alloys at home and abroad, primarily comprising alloy design, semi-solid slurry preparation process, rheoforming and defect control, modelling and numerical simulation, and industrial application. Finally, special attention was paid to the future trends and prospects of rheoforming of aluminum alloys. The future development direction mainly comprises developing new alloy suitable for rheoforming, improving the production efficiency and stability of the slurry preparation, shortening new product development cycle while enhancing the comprehensive performance of the rheoformed parts.