Andrade's Creep Law and the Flow of Zinc Crystals
Andrade's Creep Law and the Flow of Zinc Crystals
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DOI：
10.1038/160328a0
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发表时间：
1947-09
期刊：
影响因子：
64.8
通讯作者：
A. Cottrell;V. Aytekin
中科院分区：
文献类型：
--
作者：
A. Cottrell;V. Aytekin
Andrade1 研究了多晶金属丝在恒定拉应力下的塑性流动，结果表明，在伴随载荷的瞬时延伸后，流动可分为两个分量：（1）β 流动，其特征为 γ αt1/3，其中 γ 是应变和 t 时间；（2）流动，被描述为粘性流动，遵循 γ αt 定律。由此发现，扩展可以一般地用以下方程表示：
Studyingthe plastic flow of polycrystalline metallic wires under constant tensile stress, Andrade1showed that, after an instantaneous extension accompanying loading, the flow could be separated into two components: (1) β-flow, characterized by γ αt1/3, where γ is the strain andtthe time, and (2) a flow, described as viscous, obeying the law γ αt. It was thus found that the extension could be expressed generally by the equation,