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Compressive formability of 7075 aluminum alloy rings under hydrostatic pressure 被引量:2

Compressive formability of 7075 aluminum alloy rings under hydrostatic pressure
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摘要 In order to investigate the influence of hydrostatic pressure on compression limit of the ring, numerical simulation and experimental research were carried out. The effect of hydrostatic pressure on the deformation of aluminum alloy 7075 ring was obtained by numerical simulation. The die set for compressing ring under high hydrostatic pressure was designed and manufactured. Experimental results show that the compression limit increases linearly as the hydrostatic pressure increases in a certain range. At 100 MPa the maximum compressive strain is increased by 32.42%. At strain limit, the cracks initiate from the corner of the outer wall to the middle of the inner wall along the direction of the maximum shear stress. In order to investigate the influence of hydrostatic pressure on compression limit of the ring, numerical simulation and experimental research were carried out. The effect of hydrostatic pressure on the deformation of aluminum alloy 7075 ring was obtained by numerical simulation. The die set for compressing ring under high hydrostatic pressure was designed and manufactured. Experimental results show that the compression limit increases linearly as the hydrostatic pressure increases in a certain range. At I00 MPa the maximum compressive strain is increased by 32.42%. At strain limit, the cracks initiate from the comer of the outer wall to the middle of the inner wall along the direction of the maximum shear stress.
出处 《中国有色金属学会会刊:英文版》 EI CSCD 2006年第5期1103-1109,共7页 Transactions of Nonferrous Metals Society of China
基金 Project(HIT.2002.33) supported by the Scientific Research Foundation of Harbin Institute of Technology
关键词 环形试样 压缩 铝合金 流体静压 可模锻性 ring sample compression hydrostatic pressure formability 7075 aluminum alloy
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