中文摘要：

在这份报纸， rheo-diecast 进程参数和 T6 的效果在微观结构和半固体 A390 合金通过纯铜准备了的 rheo-diecasting (RDC ) 的机械性质上加热处理蛇的隧道被调查。结果显示 RDC 样品的机械性质随着流的温度和注射压力变化。在这种情况中，更低的流温度导致 RDC A390 合金的更好张力的力量和延伸；然而，当流的温度减少到 660 时，张力的力量和延伸减少 ??. 吗？？

英文摘要：

In this paper, the effects of rheo-diecast process parameters and T6 heat treatment on the microstructure and mechanical properties of the rheo-diecasting（RDC） semi-solid A390 alloy prepared through pure copper serpentine channel were investigated. The results indicate that the mechanical properties of the RDC samples change with the pouring temperature and injection pressure. In this case, a lower pouring temperature results in better tensile strength and elongation of the RDC A390 alloy; however, the tensile strength and elongation decrease when the pouring temperature decreases to 660°C. Higher injection pressures result in the improved mechanical properties of the RDC A390 alloy. To some extent, T6 heat treatment improves the tensile strength and ductility of the RDC A390 alloy compared to those of the non-heat treated alloy. However, when the pouring temperature and injection pressure are greater than 670°C and 70 MPa, respectively, the mechanical properties are sharply diminished.