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本人偶尔也做热处理模拟学习,这次在一个软件上看到以下的话(材料为20CrNi2Mo):this is a complex mixture material with eight constituents (phases), including Austenite (A), Pearlite+Bainite (PB), Martensite (M), Ferrite (F), Low-carbon Martensite(LM), Temper Banite (TB), Temper Ferrite+Cementite (TFC). The transformation kinetics between the phases include A->F, A->B, A->TB, A->M, PB->A, M->LM, M->A, LM->TFC, TB->A, and TFC->A. Among these kinetics, A->F, A->B, A->TB, M->LM, and LM->TFC are diffusion-controlled defined by TTT curves. A->M uses Martensitic transformation model, and PB->A, M->A, TB->A, and TFC->A use simplified diffusion model. In addition, A->F has an equilibrium volume fraction that depends on carbon contents.
这其中有不少疑惑,比如Temper Ferrite+Cementite (TFC),要是直译的话就应该是“回火铁素体+渗碳体”吧,可是按照我所知道的热处理知识,LM->TFC,低碳马氏体转变为X,这个X低温回火应该是回火马氏体(Temper Martensite)吧,中温回火应该是回火屈氏体(Temper Troosite),高温则应该是回火索氏体(Tempered Sorbite)。可是死老外干嘛却是Temper Bainite和Temper Ferrite+Cementite 呢?望高手指点迷津啊,平时看热处理的外文资料少啊,整迷糊了。
[ 本帖最后由 lionwww 于 2009-3-27 21:03 编辑 ] |
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