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首页> 外文期刊>鉄と鋼／Journal of the Iron and Steel Institute of Japan. >Formation of Retained Austenite and Effect of Retained Austenite on Elongation in Low Carbon Hot-Rolled High Strength Steels
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Formation of Retained Austenite and Effect of Retained Austenite on Elongation in Low Carbon Hot-Rolled High Strength Steels

机译：保持奥氏体的形成和保留奥氏体对低碳热轧高强度钢伸长率的影响

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摘要

Austenite stabilization behavior and effect of retained austenite on elongation of Fe-0.2 percentC-1.5 percentSi-1.5 approx 1.7 percent Mn hot-rolled high strength steels were investigated in the mill-scale test. The results are as follows;(1) A large amount of retained austenite (maximum approx =15 vol percent) remained in steels as-hot-rolled.(2) The two metallurgical processes (ferrite transformation and bainite transformation) ate important for the austenite stabilization. Especially ferrite transformation plays an important role to obtain retained austenite in 0.2 percent C steels. The volume fraction of retained austenite is in proportion to V_PF/d_PF (V_PF; volume fraction of polygonal ferrite, d_PF; grain diameter of polygonal ferrite).(3) TS x T.El value increases with the volume fraction of retained austenite. It is to be noted that the TS x T.El values of 25000 approx 30000 MPa centre dot percent were obtained, which are higher than those of conventional steels.TS x T.El value was improved by increasing of the plastic stability of retained austenite.
机译：在研磨尺度试验中研究了奥氏体稳定性对Fe-0.2％-1.5伸长率伸长的奥氏体对α1.5的伸长率。结果如下;（1）大量保留的奥氏体（最大约= 15倍倍百分比）仍然是热轧的钢。（2）两种冶金工艺（铁氧体转化和贝氏体转化）对此重要奥氏体稳定。特别是铁氧体转化在0.2％C钢中获得保留奥氏体的重要作用。保留奥氏体的体积分数与V_PF / D_PF（V_PF;多边形铁氧体的体积分数，D_PF;多边形铁氧体的粒径）。（3）TS x T.EL值随着保留奥氏体的体积分数而增加。应注意，获得25000大约30000MPa中心点百分比的TS x TEL值，其高于常规钢的值。通过增加保留奥氏体的塑性稳定性来提高X T.EL值。 。

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