Effect of Size on the Strength of Metal Whiskers
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概要
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Optical and electron microscopic observations have revealed that surface steps become noticeable on metal whiskers with larger diameters. Taking into account the stress concentration at the roots of these steps, a dislocation-loop nucleation model is proposed to explain the dependence of the yield strength on size as shown by both fcc and bcc metal whiskers. The proposed model explains the observed size-strength relation very well and is free from the difficulty of the divergence of the yield stress at zero size which is common in empirically-proposed relationships.The decrease in the stacking fault energy brought about by alloying is found to decrease the yield stress.
- 社団法人応用物理学会の論文
- 1982-09-20
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