衝撃破面のフラクトグラフィ的特徴と内部組織との対応関係に関する研究 : 衝撃速度の影響

概要

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The correlation between the fractographic features and the underlying microstructure and the effect of impact velocity on the correlation were studied by noting the cleavage facets. The observed cleavage facets were divided into three groups according to the features of their surfaces. The ratio of the cleavage facts made from one grain to all the observed facts decreased, the ratio of those made from a part of one grain increased and the ratio of those made from two grain and over was constant with an increase of impact velocity. This fact is considered to be caused by the propagation and interference of stress waves. Thus,an understanding of stress waves is needed to analyze the fracture surface caused by impact loads. It was also observed that a twin parttern occasionally made a tongue or a cleavege step.
社団法人日本材料学会の論文
1986-10-15