降伏機構の実験的研究 : 予備的すべりとすべりの伝ば機構

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  • Studies on the Yield Phenomena : Preparatory Slip and Propagation of Slip at Lower Yield Stress
  • コウフク キコウ ノ ジッケンテキ ケンキュウ

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In the present paper, slip behavior in α-brass before and after yielding is investigated by means of etch-pits technique which can reveal the faint slip lines as dislocation rows. By this method, it has been found that the stress concentrations at the inclusions and the edge corner of the test piece activate nearby dislocation sources to cause the preparatory slips, and that the degree of the constraint for slip deformations imposed by the neighbouring crystals is one of the important factors determining whether the preparatory slip can propagate into undeformed regions or not. The slip deformations at the lower yield stress propagate over the test piece under these conditions.

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