Metallurgical Factors Controlling COA in Steels.

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  • 鋼のＣＯＡの支配因子
  • コウ ノ COA ノ シハイ インシ

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Abstract

Metallurgical factors controlling COA were studied, by using plain carbon steels of various strength levels. The results are summarized as follows. (1) COA decreases with increase in hardness, amount of inclusion, size of precipitate and amount of low temperature transformation product. (2) Anisotropy of COA, i.e. the ratio of COA in a specimen of L-direction to that of T-direction, comes from inclusion, and texture. (3) COA has fairly good correlation with Charpy absorbed energy of the full ductile fracture mode.

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