Formation Temperature of Bainitic Ferrite in Si-Containing Steels
Formation Temperature of Bainitic Ferrite in Si-Containing Steels
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含硅钢中贝氏体铁素体的形成温度
DOI：
10.2320/matertrans1989.32.658
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发表时间：
1991
影响因子：
1.2
通讯作者：
T. Maki
中科院分区：
文献类型：
--
作者：
K. Tsuzaki;C. Nakao;T. Maki
本文对2%Si-1%Mn-0.34%C和2%Si-1%Mn-0.59%C钢在不同温度下等温转变产物进行了金相研究，着重探讨了贝氏体铁素体的形成机理。在0.34%C钢中，奥氏体首先分解为铁素体，然后在973 K（刚好低于A1温度）的转变后期分解为珠光体。随着分解温度的降低，先共析铁素体的数量减少，在873 K时组织变为完全珠光体
A metallographic study of isothermal-transformation products formed at various temperatures was made in 2%Si-1%Mn-0.34%C and 2%Si-1%Mn-0.59%C steels with particular emphasis on the formation mechanism of bainitic ferrite. In the 0.34%C steel, the austenite first decomposes into ferrite and then into pearlite in the later stage of transformation at 973 K (just below the A 1 temperature). As decreasing the decomposition temperature, the amount of proeutectoid ferrite decreases and the structure becomes fully pearlitic at 873 K