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利用“固体与分子经验电子理论”的键距差分析法建立了 4 0 Cr Mn合金奥氏体的价电子结构 ,研究了合金中 Cr,Mn对其 C-曲线的影响。分析表明 :4 0钢中加入 Cr,Mn元素后 ,较强的 C-Me强键络阻碍了合金奥氏体的相变 ,从而提高了合金的淬透性 ,并引起 C曲线的拖曳效应。
The valence electron structure of austenite of 4 0 Cr Mn alloy was established by the bond distance difference analysis of “solid and molecule empirical electron theory”, and the effect of Cr and Mn on the C-curve of the alloy was studied. The analysis shows that the strong C-Me strong bond hinders the phase transformation of the alloy austenite after the addition of Cr and Mn elements to the 40 steel, which improves the hardenability of the alloy and causes the drag effect of the C curve.