多晶铜和α -黄铜的加工硬化

Metal science Pub Date : 1984-03-01 DOI:10.1179/MSC.1984.18.3.123

M. Z. Butt, P. Feltham

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引用次数: 30

摘要

摘要研究了10、15、20、30 at晶粒尺寸的多晶α黄铜在不同应变条件下活化体积的应力依赖性。-%Zn和4N和5N纯度的多晶Cu在77、200和290 K下。数据表明，溶质原子仅在单轴应变的很小百分比值内是位错滑动的有效障碍;传统的加工硬化，即森林切削，决定了高应变下的流动应力。

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Work hardening of polycrystalline copper and alpha brasses

AbstractThe stress dependence of the activation volume was studied over a range of strains in polycrystalline alpha brasses of various grain sizes containing 10, 15, 20, and 30 at.-%Zn, and in polycrystalline Cu of 4N and 5N purities at 77, 200, and 290 K. The data show that solute atoms are effective obstacles to dislocation glide only up to small percentage values of uniaxial strain; conventional work hardening, i.e. forest cutting, determines the flow stress at higher strains.

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Metal science

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