Simulation of Compound Cold Extrusion Al-Zn-Mg-Cu Alumium Alloys

Abstract:

Al-Zn-Mg-Cu super-high strength aluminum alloy is widely used in the aerospace and automotive industry. However, the extrudability of Al-Zn-Mg-Cu aluminum alloy is relatively poor compared with other series of aluminum alloys. The simulation of compound cold extrusion process of Al-Zn-Mg-Cu aluminum alloy was studied for the production of a double-cup workpiece with a deep wobbler hole in this paper. The effective strain and stress distribution of the alloy during cold extrusion were studied by Deform-3D simulation. The results show that the maximum stress was concentrated at the bottom of the deep hole. Cracks were easily to be occured near the bottom of deep-hole. Based on the experimental results, the processing route of the two steps with compound cold extrusion is more suitable than one cold extrusion for the production.

• Periodical: Applied Mechanics and Materials (Volume 159)
• Pages: 257-261
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.159.257
• Online since: March 2012
• Authors: Zhi Ming Zhou, Wei Jiu Huang, Zhen Zhao, Bin Bin Lei, Chun Liu, Min Min Cao
• Keywords: Al-Zn-Mg-Cu Aluminum Alloy, Cold Extrusion, Simulation

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