论文部分内容阅读
采用元素粉作为原料,通过热等静压技术(HIP)制备出50%SiP/Al-Cu和70%SiP/Al-Cu(体积分数)复合材料,研究固溶处理和峰值时效处理对复合材料显微组织、Al2Cu相溶解过程及力学性能的影响。结果表明:热等静压技术制备的SiP/Al-Cu复合材料完全致密,组织均匀细小,材料由Si相、Al相和Al2Cu组成,白色Al2Cu相产生于原始的Cu粉与Al粉界面处。在516℃固溶处理2h后,70%SiP/Al-Cu复合材料中的Al2Cu相全部溶入Al基体中,而50%SiP/Al-Cu复合材料中还残留少量Al2Cu相。经过峰值时效处理后,50%SiP/Al-Cu和70%SiP/Al-Cu复合材料的抗弯强度为548MPa和404MPa,相对于热等静压态分别提高了38.81%和13.51%,复合材料的强度显著增强。
Using elemental powders as raw materials, 50% SiP / Al-Cu and 70% SiP / Al-Cu composites were prepared by hot isostatic pressing (HIP). The effects of solution treatment and peak aging treatment on the mechanical properties of the composites Microstructure, Al2Cu Phase Dissolution Process and Mechanical Properties. The results show that the SiP / Al-Cu composites prepared by hot isostatic pressing are completely compact with fine and uniform microstructure. The material consists of Si phase, Al phase and Al2Cu. The white Al2Cu phase is produced at the interface between the original Cu powder and Al powder. The Al2Cu phase in 70% SiP / Al-Cu composites completely dissolved into the Al matrix after solution treatment at 516 ℃ for 2h, while a small amount of Al2Cu phase remained in the 50% SiP / Al-Cu composites. The flexural strengths of 50% SiP / Al-Cu and 70% SiP / Al-Cu composites were 548 MPa and 404 MPa, respectively, and were 38.81% and 13.51% higher than that of the HIP, respectively, The intensity is significantly enhanced.