铜合金半固态流变成形及制备技术研究进展

金属半固态成形已有近50年的发展历史,因其加工优势和市场价值备受关注,并形成了很多加工方法,其中半固态流变成形工艺效率高、成本低,具有较好的发展前景。由于铜合金熔点普遍较高,目前针对其进行的半固态工艺研究较少。简要综述了针对铜合金的半固态流变成形及制备技术的研究新进展,包括各新工艺的加工过程、最优工艺参数选择及工艺过程的机理等,分析了各工艺目前尚存在的问题和原因。阐述了半固态流变制备工艺模型及机理的新进展,并对其发展趋势进行了分析和展望,认为半固态流变成形技术未来的研究方向有半固态浆料制备新方法、新型半固态合金和半固态组织演变机制及其控制方法等。

Research Progress of Copper Alloy Semi-solid Rheological Forming and Preparation Technology

Semi-solid metal forming has a history of nearly 50 years and attracted much attention due to its processing advantages and market value. Many processing methods have been developed, among which the semi-solid rheological forming process has a good development prospect for its high efficiency and low cost. As the melting point of copper alloy is generally high, there are few researches on its semi-solid process. In this paper, the research progress of semi-solid rheological preparation technology for copper alloy was briefly reviewed, including the process of each new process, the selection of optimal process parameters and the mechanism of the process; and the existing problems of each process were analyzed. The new progress of the rheological preparation process model and its mechanism of semi-solid state were described, and the development trend was analyzed and prospected. It is considered that the future research direction of semi-solid rheological forming technology includes new preparation method of semi-solid slurry, new semi-solid alloy and semi-solid structure evolution mechanism as well as their control methods.