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本文研究了含碳为0.15％的钢添加V、N及Al形成第二相粒子对奥氏体晶粒粗化行为的影响。氧化和浸蚀技术被用以显示原奥氏体晶界。试样在900℃到1150℃范围内,高真空(<10~(-4)托)下奥氏体化半小时,每次奥氏体化的温度间隔为50℃,在接近结束前一分钟左右时,输入约250mmHg压力的氧气使试样氧化,以显示奥氏体晶界,然后在冰水中淬火。在这些钢中,原始奥氏体晶粒尺寸随温度的变化表明,在整个温度范围内,V(C,N)对奥氏体晶粒细化的影响比VC大得多,而与AlN或多或少有些相似之处。然
In this paper, the effect of adding V, N and Al on the coarsening behavior of austenite grain is studied. Oxidation and etching techniques are used to show the original austenite grain boundaries. The specimens were austenitized for half an hour in the high vacuum (<10 -4 Torr) range from 900 ° C to 1150 ° C with a temperature interval of 50 ° C for each austenitization and a minute before the end Oxygen at a pressure of about 250 mmHg is input to oxidize the sample to show austenite grain boundaries and then quenched in ice water. In these steels, the variation of the original austenite grain size with temperature shows that the effect of V (C, N) on austenite grain refinement is much greater than that of VC over the entire temperature range, More or less some similarities. Of course