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The effect of prestrain and subsequent annealing on the mechanical behavior of AA5182-O

机译:预应变和后续退火对AA5182-O力学性能的影响

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摘要

The effect of uniaxial tensile prestrain and subsequent annealing on the post-annealing mechanical properties (elongation, yield stress and strain-hardening exponent) of AA5182-O was investigated. Experiments were performed at four prestrain levels (5,10,15, and 20%) and three annealing temperatures (300,350, and 400 ℃), with holding times ranging from 5 s to 1 h. Empirical models for the yield stress of post-annealing AA5182-O were developed in terms of the applied prestrain, annealing temperature, and time for static recovery and recrystallization processes. The strain-hardening exponent was shown to have a linear correlation with the logarithm of yield stress. The above models can be used in formability analyses and forming process optimization.
机译:研究了单轴拉伸预应变和后续退火对AA5182-O退火后力学性能(伸长率,屈服应力和应变硬化指数)的影响。实验在四种预应变水平(5、10、15和20%)和三种退火温度(300,350和400℃)下进行,保持时间为5 s至1 h。根据所施加的预应变,退火温度和静态恢复和再结晶过程的时间,建立了退火后AA5182-O屈服应力的经验模型。应变硬化指数显示出与屈服应力的对数线性相关。以上模型可用于可成形性分析和成形工艺优化。

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