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用测量长度的变化,得出残留奥氏体在含硅量不同的Ni(2%)Cr(0.8%)Mo(0.25%)高强度低合金钢中在回火过程的分解曲线,在这些合金钢中,硅的含量为1.5%时,残留奥氏体的分解较慢。由其分解激活能的推论得到:在这个类型的合金钢中,含硅量较低时(0.2—0.3%),残留奥氏体的分解是由于碳在奥氏体中的扩散,而含硅量较高时(1.5%),硅的扩散可能成为残留奥氏体分解的控制因素。
The decomposition curves of the retained austenite during the tempering process in Ni (2%) Cr (0.8%) Mo (0.25%) high strength and low alloy steels with different silicon contents were obtained by measuring the change of length. Steel, the content of silicon is 1.5%, the slow decomposition of retained austenite. The corollary of its decomposition activation energy is that in this type of alloy steel, the decomposition of residual austenite is due to the diffusion of carbon in the austenite when the silicon content is low (0.2-0.3%), whereas the content of silicon When the amount is high (1.5%), the diffusion of silicon may be the controlling factor for the residual austenite decomposition.