低合金钢在共晶间隙温度下的相变

L. Karmazin
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引用次数: 8

摘要

含2wt. %Mn, 2wt. %Mn的钢的准二元亚稳相图中共晶间隙的宽度。wt % Si, 1。%Cr和0.8wt。%C测定为50℃左右。通过在共析间隙内加热钢并随后淬火结构,形成了含渗碳体颗粒的铁素体-马氏体两相基体。当材料的初始状态为均匀奥氏体、均匀马氏体和软退火组织时,该组织的形态各不相同。在初始软退火状态制备的组织中,铬主要集中在渗碳体中;锰也存在于渗碳体中,但主要存在于基体相中,主要存在于马氏体中;硅完全溶解在基体中,表现出对铁氧体的偏爱。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Phase transformations of low-alloy steel at temperatures inside the eutectoid gap

The width of the eutectoid gap in the quasi-binary metastable phase diagram of the steel with 2 wt.%Mn, 2wt.%Si, 1wt.%Cr and 0.8wt.%C was determined to be about 50°C. By heating this steel at temperatures inside this eutectoid gap and by subsequently quenching the structures, a ferrite-martensite two-phase matrix containing cementite particles was formed. Various morphologies of this structure were obtained when the initial states of the material were homogeneous austenite, homogeneous martensite and soft-annealed structure. In the structure prepared from the initial soft-annealed state, the chromium is concentrated mainly in cementite; the manganese is also present in cementite but most of it is contained in matrix phases, mainly in martensite; the silicon is dissolved entirely in the matrix, showing a preference for ferrite.

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