鉄合金におけるγ→α′マルテンサイト変態におよぼす微少前歪とオーステナイト化条件の効果

概要

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Grain refining and plasticity induced by martensitic transformation are thought to be important for developing high strength steels with ductility. The phenomena are connected with the nucleation process of martensite, although the nucleation mechanism of martensite has been still obscure. In order to get some informations of the nucleation effects of small pre-strain and austenitizing conditions on γ→α′martensitic transformation of iron alloys have been investigated by measuring electric resistivity and hardness, and by optical-and electron-microscopy. A part of experimental results have been analyzed numerically by reaction rate equation. Merits and demerits of hitherto suggested models of martensitic nucleation are discussed comparing with the results of this work and a direction of future investigation is proposed.
社団法人日本鉄鋼協会の論文
1975-07-01