Abstract：The 2A12 aluminum alloy powder parts with complex structure were manufactured by hot isostatic pressing (HIP). Based on the Shima model in MSC.MARC software， the forming process was simulated with the use of 2A12 aluminum alloy material parameters. Simulation results show that， the relative density of the powder in slit has gradient distribution， and the powder on side face has uniform distribution； the graphite mould has little deformation. Experimental results show that， the interface reaction happens between graphite and Al powder； the defects of pits and bumps appear on the inner wall； the[Rp0.2]and[Rm]of the sample are respectively 179 MPa and 316 MPa； the fracture of the sample is along the powder interface， and the materials are fully dense with the analysis of metallographic.
[1] 赵玉谦, 方世杰. 粉末冶金高强铝合金在汽车工业中的应用[J]. 汽车工艺与材料, 2004, 9(1): 1-6.[2] 马富康. 等静压技术[M]. 北京: 冶金工业出版社, 1992: 151-152.[3] 吴成义, 张丽英. 粉末成形力学原理[M]. 北京: 冶金工业出版社, 2003: 189-191.[4] 黄培云. 粉末冶金原理[M]. 北京: 冶金工业出版社，2014:370-377.[5] Lang Li-hui, Yu Si, Wang Gang, et al. Microstructure and mechanical properties of 2A12 Al alloy powder reinforced with continuous carbon fibers manufactured by hot isostatic pressing[A]. In: International Bhurban Conference on Applied and Science & Technology[C]. Islamabad, IEEE, 2015:84-88.[6] Heinz A, Haszler A, Keidel C, et al. Recent development in aluminum alloys for aerospace applications[J]. Materials Science & Engineering A, 2000, 280(1):102–107.[7] Staley J T, Liu J, H J, Warren H. Aluminum alloys for aerostructures[J]. Advanced Materials and Processes, 1997, 152(4): 10?17.[8] 黄汉中. 铝及铝合金焊接中常见焊接缺陷及其对策[J]. 石油化工设备技术, 1997, (5):51-57.[9] 王荣滨. 铸造铝合金缺陷分析与热处理工艺研究[J]. 铸造技术, 2012, 27(5): 10-12.[10] 华林, 秦训鹏. 粉末烧结材料屈服条件研究和进展[J]. 武汉理工大学学报, 2004, 26(4), 1-5.[11] Shima S, Oyane M. Plasticity theory for porous metals [J]. International Journal of Mechanical Sciences, 1976, 18(6):285–291.[12] Sanchez L, Ouedraogo E, Federzoni L, et al. New viscoplastic model to simulate hot isostatic pressing [J]. Powder Metallurgy, 2002, 45(4):329-334.
2016, Vol. 26 
