Unique microstructure and property of a 2024 aluminum alloy subjected to upsetting extrusion multiple processing
来源期刊：Rare Metals2004年第1期
论文作者：LI Xiaoqiang, LI Yuanyuan, CHEN Weiping, LONG Yan, HU Lianxi, and WANG Erde) College of Mechanical Engineering, South China University of Technology, Guangzhou , China) School of Materials Science & Engineering, Harbin Institute of Technology, Harbin . China
文章页码：74 - 78
摘 要：<正> The microstructure and hardness of a 2024 aluminum alloy subjected to multi-pass upsetting extrusion at ambient temperature were studied. Experimental results indicated that with the number of upsetting extrusion passes increasing, the grains of the alloy are gradually refined and the hardness increases correspondingly. After ten passes of upsetting extrusion processing, the grain size decreases to less than 200 nm in diameter and the sample maintains its original shape, while the hardness is double owing to equal-axial ultrafine grains and work hardening effect caused by large plastic deformation.
摘要：<正> The microstructure and hardness of a 2024 aluminum alloy subjected to multi-pass upsetting extrusion at ambient temperature were studied. Experimental results indicated that with the number of upsetting extrusion passes increasing, the grains of the alloy are gradually refined and the hardness increases correspondingly. After ten passes of upsetting extrusion processing, the grain size decreases to less than 200 nm in diameter and the sample maintains its original shape, while the hardness is double owing to equal-axial ultrafine grains and work hardening effect caused by large plastic deformation.
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