The strains produced by precipitation in alloys
The strains produced by precipitation in alloys
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DOI：
10.1098/rspa.1940.0072
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发表时间：
1940-07-01
影响因子：
--
通讯作者：
Nabarro, FRN
中科院分区：
文献类型：
--
作者：
Nabarro, FRN
如果金属中的扩散过程仅仅导致原子对的交换，那么当合金中析出新相时就必须产生大的应变。计算了不同形状的析出物的应变能，发现当析出物形成薄板时，应变能最小。实际形成的颗粒形状受能量、固溶体过饱和程度和表面效应的影响；计算结果与实验结果吻合较好。
If the process of diffusion in metals results simply in the interchange of pairs of atoms large strains must be set up when a new phase precipitates in an alloy. The strain energy involved is calculated for particles of precipitate of various shapes, and is found to be least if the precipitate forms thin plates. The shape of the particle actually formed is influenced by this energy, by the degree of supersaturation of the solid solution, and by surface effects; the calculated shape is shown to agree reasonably well with that observed experimentally.