20CrMnMo鋼的晶粒度穩(wěn)定性試驗(yàn)研究
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Abstract： From microallying and post forging heat treatment optimization，multiple experiments on the grain size stability of 20CrMnMo steel under pseudo carburizing conditions （940℃/36 hours） were conducted in this paper. The experimental resultsshow that，on the basis of containing a certain amount ofN，the grain size stability of thetestmaterialwithonlyAladdedissignificantlybetterthanthatof thetestmaterialwithbothNbandAladded simultaneously； By optimizing the post forging heat treatment process，the non-equilibrium microstructure after forging can be improved toa balanced microstructure，eliminating structure heredity，which can effectively refine the grains and improve the grain size stability.
Keywords：2OCrMnMo steel； grain size stability； microaloying； non-equilibrium microstructure； AIN
1序言
20CrMnMo是一種高級滲碳鋼，常用于制造高硬度、高強(qiáng)度和高韌性的重要齒輪部件。（剩余4217字）