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Role of the Austenite-Ferrite Transformation Start Temperature on the High-Temperature Ductility of Electrical Steels

机译:奥氏体-铁素体转变开始温度对电工钢高温延展性的作用

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摘要

The austenite to ferrite transformation start temperature was measured in two low-C, Si-Al grain non-oriented electrical steels using in situ x-ray diffraction and the direct comparison method with the (111)γ and (110)α diffracted intensities. It was shown that increasing Al content from 0.2 to 0.6 wt.% in a 0.06 wt.% C, 0.6 wt.% Si and 0.5 wt.% Mn steel increases the Ae3 temperature from 928 to 955 °C. The results are supported by microstructural observations of isothermally transformed samples and used to discuss the loss of ductility during high temperature deformation (e.g. hot rolling) of this type of materials.
机译:使用原位X射线衍射和(111)γ和(111)和直接比较法,测量了两种低碳Si-Al晶粒无取向电工钢中奥氏体到铁素体转变的起始温度。 (110)α衍射强度。结果表明,在0.06 wt。%的C,0.6 wt。%的Si和0.5 wt。%的Mn钢中,Al含量从0.2增至0.6重量%,会使Ae 3 温度从928升高至955 ℃。这些结果得到了等温转变样品的微观结构观察的支持,并用于讨论这种材料在高温变形(例如热轧)过程中延展性的损失。

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