合金元素对低碳微合金钢临界区奥氏体体积分数的影响
Influence of Alloy Elements on Volume Fraction of Austenite in Low Carbon Micro-alloyed Steel Quenching in Critical Area
胡晓萍1, 文 超2, 李自刚1
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作者单位：(1. 宝钢技术中心, 上海 201900; 2. 上海交通大学 材料科学与工程学院, 上海 200240)
中文关键字：微合金钢； 临界区； 奥氏体体积分数
英文关键字：micro-alloyed steel; critical area; volume fraction of austenite
中文摘要：采用Thermo-Calc软件研究了低碳微合金钢中C、Cr、Mo等元素含量对临界区奥氏体体积分数的影响规律，并通过临界区淬火热处理试验确定奥氏体体积分数。 结果发现，合金元素的含量对临界区奥氏体体积分数有一定影响。增加C和Cr的含量能够提高临界区奥氏体体积分数，增加Mo含量将降低临界区奥氏体体积分数。
英文摘要：The influences of alloy elements (C, Cr, Mo) on the volume fraction of critical austenite in low carbon micro-alloyed steel were studied by Thermo-Calc software. Then the volume fraction of critical austenite was measured by critical heat treatment. The results show that the content of alloy elements can affect the austenite volume fraction. The increase of C and Cr content can result in more critical austenite, while Mo reduces the fraction of critical austenite.