...况下,材料的临界屈服 应力将随着塑性应变的积累而发生变化,即 ( , ) yd yd σ σ κ = α (9-10) 其中 为塑性功(plastic work),α 为屈服面的平移量(yielding surface translation),这两个量 都可以通过实验来确定。
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可以间接对材料的塑性功热转换系数进行测试;
The coefficient of heat conversion from plastic work to heat can be indirectly measured.
他们的论点是基于在硬化中的塑性功是可控制的因子。
Their argument is based on the plastic work Wp being the controlling tactor in hardening.
适当的热处理可提高裂纹扩展所需塑性功,从而在一定范围内改善复合材料塑性。
Suitable heat treatment will increase the crack extension energy, and improve the plasticity of the composite.
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