【摘要】：奧氏體預(yù)變形影響后續(xù)貝氏體相變,采用SEM、膨脹法和XRD衍射分析等實(shí)驗(yàn)方法,研究了奧氏體預(yù)變形對等溫貝氏體相變動力學(xué)的影響規(guī)律。結(jié)果表明,300℃變形25%加速貝氏體相變,且貝氏體最終轉(zhuǎn)量增多,室溫組織中殘留奧氏體量與貝氏體轉(zhuǎn)變量相關(guān),隨貝氏體轉(zhuǎn)變量增大而增多,變形對等溫貝氏體相變的影響與變形溫度和變形程度有關(guān)。此外,首次提出了變形條件下貝氏體相變動力學(xué)Avrami修正模型,為下一步系統(tǒng)建立變形條件下貝氏體相變動力學(xué)模型提供了參考。本文的結(jié)果為縮短高強(qiáng)塑積無碳化物貝氏體鋼生產(chǎn)時間提供了有效途徑。
[Abstract]:The effect of austenite predeformation on subsequent bainite transformation was studied by means of SEM, expansion method and XRD diffraction analysis. The effect of austenite predeformation on the isothermal bainite transformation kinetics was studied. The results show that 25% deformation at 300 鈩，

本文編號：2207049