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Mechanical behavior of 7A04 alloy in semisolid isothermal compression
Author(s): 
Pages: 125-128,138
Year: Issue:  6
Journal: Journal of Plasticity Engineering

Keyword:  半固态等温压缩力学行为;
Abstract: 通过半固态等温压缩实验,研究了7A04合金在半固态压缩过程中的力学行为.结果表明,半固态压缩时的峰值应力受变形温度和应变速率的影响较大,而稳态应力值受变形温度和应变速率的影响较小,且该合金具有应变速率敏感性.以此为基础,研究了半固态等温压缩过程中的微观组织变化及金属流动规律,揭示了半固态加工中可用较小的力实现较大变形的真正原因,为合理制定半固态加工工艺参数奠定了理论基础.
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