Strain hardening in polycrystalline copper
Strain hardening in polycrystalline copper
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DOI：
10.1080/14786436408222953
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发表时间：
1964-03
影响因子：
1.6
通讯作者：
F. Bullen;C. B. Rogers
中科院分区：
文献类型：
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作者：
F. Bullen;C. B. Rogers
多晶铜的应变硬化是两种相互竞争的过程的净结果：(I)在广泛的实验条件下变形时发生的应变硬化的基本过程；(Ii)消除变形过程中产生的部分障碍的动态回复。提出的论点表明，基本过程将给出一个线性硬化速率，但在高障碍密度下发生的效应；这一效应也是导致高硬化程度时Cottrell-Stokes比变化的原因。
Abstract Strain hardening in polycrystalline copper is shown to be the net result of two competing processes: (i) a basic process of strain hardening which occurs during deformation under a wide range of experimental conditions, and (ii) ‘dynamic recovery’ which removes a proportion of the obstacles produced during deformation. Arguments are presented which suggest that the basic process would give a linear rate of hardening but for an effect which occurs at high obstacle densities; this effect is also responsible for variation of the Cottrell–Stokes ratio at high degrees of hardening.