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Strength contributions from precipitates

机译:沉淀物的力量贡献

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摘要

A theory for the strength contribution from precipitates is developed based on the statistical particle-size and shape distributions and the corresponding obstacle strengths. The generic case of spherical precipitates and the special case of needle-shaped precipitates in the 6xxx aluminium alloy series are considered. It is accounted for that the largest precipitates are stronger and at the same time, intersect a larger number of slip planes than the smaller ones. For a considered peak aged AA6082, the improved model gives a 59% higher strength, which fits the experiments well without the need of previously introduced calibration parameter for the mean effective particle spacing in the slip plane.
机译:基于统计粒度和形状分布和相应的障碍物强度,开发了对沉淀物强度贡献的理论。 考虑了6xxx铝合金系列中针状沉淀物的通用情况和针状沉淀的特殊情况。 考虑到最大的沉淀物更强,同时相交,比较较小的滑坡。 对于AA6082的考虑峰值,改进的模型具有59%的强度,其强度良好,而实验很好地拟合了用于平面中平均有效颗粒间距的先前引入的校准参数。

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