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Mechanical behavior of ultrafine-grained cryomilled Al 5083 at elevated temperature

机译:高温下超细晶冷磨Al 5083的力学行为

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摘要

The mechanical behavior of cryomilled and consolidated Al 5083 with a duplex ultrafine-grained microstructure is described for compression testing at different temperatures and strain rates. The relationship among flow stress, strain rate, and testing temperature provides an initial hotworking guide for finegrained cryomilled aluminum alloys. The ultrafine-grained material exhibits similar deformation characteristics, such as strain-rate sensitivity, which would be expected in a conventional aluminum alloy. These findings are discussed in the context of recent empirical and theoretical models for the deformation of materials with grain sizes between 100 and 1000 nm.
机译:描述了具有双相超细晶粒微结构的冷冻研磨和固结Al 5083的机械性能,用于在不同温度和应变速率下进行压缩测试。流动应力,应变率和测试温度之间的关系为细晶冷铣削铝合金提供了初步的热加工指导。超细晶粒材料表现出类似的变形特性,例如应变速率敏感性,这是常规铝合金所期望的。这些发现是在最近的经验和理论模型的背景下讨论的,该模型用于晶粒尺寸在100至1000 nm之间的材料的变形。

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