応力緩和によるアルカリハライドおよびMgO単結晶の塑性変形機構の研究

概要

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Load relaxation experiments were performed on single crystals of NaCl (at - 30℃ and 100℃) , KCl (at room temperature and 60℃) and MgO (at room temperature) . The resulting log σ-log ε curves were convex upward for NaCl (at 100℃) and KCl (at room temperature and 60℃) . It was slightly convex downward for MgO (at room temperature). The curvature for NaCl (at -30℃) could not be determined owing to the experimental difficulty in keeping temperature constant for a long duration. All the logσi-log ε curves for a given sample (examined for NaCl at 100℃ and KCl at room temperature and 60℃) were superimposed by a translation along a straight line of slopeμ. These behaviors indicate that Hart model is satisfactorily applicable to these materials. The reason why the Gupta-Li analysis was not successful for KCl at room temperature in our previous experiment was also discussed.
社団法人日本材料学会の論文
1981-02-15