流变压铸YL112铝合金的热处理与力学性能
来源期刊:中国有色金属学报2008年第3期
论文作者:郭洪民 杨湘杰
文章页码:394 - 394
关键词:流变成形;压铸;微观组织;力学性能;热处理;
Key words:rheoforming; diecasting; microstructure; mechanical properties; heat treatment
摘 要:
Abstract: Based on the independently developed rheocasting process named as low superheat pouring with a shear field (LSPSF), a new one-step semi-solid processing technique, the rheo-diecasting (RDC) process, was exploited. The porosity in RDC YL112 secondary aluminum alloy castings, heat treatments and mechanical properties were investigated. The results show that RDC can improve the integrity and mechanical properties, particularly elongation of YL112 alloy, and the heat treatment can further enhance the mechanical properties. The spheroidization process of eutectic silicon in YL112 alloy is already finished after solution treatment at 500 ℃ for 3 min. A suitable combination of strength and ductility can be obtained under an exploited T6 heat treatment process, solution treated at 500 ℃ for 30 min followed by water quenching at 80 ℃ and then artificial aged at 160 ℃ for 6 h.
基金信息:国家自然科学基金资助项目
江西省教育厅科技计划资助项目