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将Finnis-Sinclair多体势扩展到多元合金,建立适合于Fe-Cr-V-Ni-Si-C系的多元合金的原子间相互作用势函数;利用其多元合金的原子间相互作用势函数,研究Fe-Cr-V-Ni-Si-C系多元合金奥氏体和马氏体基体的稳定性.研究表明,计算结果与实验结果具有对应关系;加入适量Ni,可确保高钒高铬铸铁在铸态下相变成马氏体,残余奥氏体经过高温回火完全分解进而获得高的硬度.
The Finnis-Sinclair multi-body potential is extended to a multi-element alloy and a potential function of interatomic interaction suitable for the multi-element alloy of the Fe-Cr-V-Ni-Si-C system is established. Based on the potential function of the multi- The stability of austenite and martensite matrix of Fe-Cr-V-Ni-Si-C multi-element alloys was studied. The results show that the calculated results are in good agreement with the experimental results. Adding suitable amount of Ni can ensure high vanadium high chromium cast iron In the cast phase into martensite, retained austenite after high temperature tempering completely decomposed and thus obtain high hardness.