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Bainitic transformation behavior studied by simultaneous neutron diffraction and dilatometric measurement

中性子回折と熱膨張を同時に用いたベイナイト相変態挙動

Koo, M.*; 徐 平光 ; 友田 陽*; 鈴木 裕士

Koo, M.*; Xu, P. G.; Tomota, Yo*; Suzuki, Hiroshi

角度分散法その場中性子回折を用い、高合金ベイナイト鋼のベイナイト相変態挙動を観察した。熱膨張測定中の中性子実験を行い、加熱,冷却と等温保持中のオーステンナイト111とフェライト110回折のプロファイルを記録した。中性子回折の結果は熱膨張の結果とよく一致した。オーステンナイトの回折ピック幅の広がりはベイナイト変態する前ではなく、変態開始後に起こることを示した。

Bainitic transformation behavior has firstly been observed using in situ neutron diffraction with an angular dispersive method for a hard bainite steel. The dilatometric measurement was carried out simultaneously with the neutron experiment where changes in (1 1 1) austenite and (1 1 0) ferrite diffraction profiles were monitored during heating, cooling and holding at a transformation temperature. The neutron experiments results agree with dilatometry results. They appear to have found that the austenite peak broadening occurs after the onset of bainitic transformation but not before.

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パーセンタイル:23.98

分野:Nanoscience & Nanotechnology

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