Effect of rolling strain on transformation induced plasticity of austenite to martensite in a high-alloy austenitic steel

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• 作者：M. Bigdeli Karimi ; H. Arabi ; A. Khosravani ; J. Samei
• 关键词：Transformation induced plasticity (TRIP) ; Rolling strain ; Austenitic steel ; Hardness ; Magnetic measurement
• 刊名：Journal of Materials Processing Technology
• 出版年：2008
• 期刊代码：102_09240136
• 类别：et
• 出版时间：18 July 2008
• 卷：203
• 期：1-3
• 页码：349-354
• 文件大小：761 K

摘要

Current studies show a growing interest on transformation induced plasticity (TRIP) in austenitic steels. Most researches are based on inducing plasticity via tensile stresses, so it seems interesting to accomplish these researches by compressive stresses. Rolling process is a suitable choice to make compressive stresses. In present work, the effects of a wide range of rolling strains (5%–60%) at 0 and 24 °C on the austenite to martensite transformation were investigated on high-alloy austenitic steel. For this purpose, XRD, hardness test and magnetic measurements were used. Results show that by increasing the amount of rolling strain, transformation of austenite to martensite generally increases. The regime of this increase depends on the amount of the plastic deformation and temperature.