Evolution of Ultrafine-grained Ferrite in Hot Successive Deformation
Evolution of Ultrafine-grained Ferrite in Hot Successive Deformation
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DOI：
10.2355/isijinternational1966.27.492
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发表时间：
1987
影响因子：
1.8
通讯作者：
Y. Matsumura;H. Yada
中科院分区：
文献类型：
--
作者：
Y. Matsumura;H. Yada
普通C-Mn钢在Ar3附近发生大变形，形成超细晶铁素体组织。这是由于形变过程中铁素体的动态转变和再结晶。为了将这一新发现应用到实际轧制中，本文研究了用多道次变形来代替单道次大变形。结果表明，当连续变形的过渡时间小于2s时，累积应变的作用可使铁素体晶粒细化。带钢轧制试验提供的平均铁素体晶粒尺寸达到ASTM 13.5。
Large deformation for a common C-Mn steel at the temperatures around Ar3 results in an ultrafine-grained ferrite structure. This is due to dynamic transformation and recrystallization of ferrite during deformation. To apply the new finding to an actual plant rolling, multi-pass deformations which substitute for a single pass heavy deformation have been studied.It was realized that when the interpass time during successive deformations is shorter than 2s, the effect of accumulative strain can make ferrite grains fine.A trial of strip rolling in plant provided a mean ferrite grain size of ASTM No. 13.5.