增碳层中的碳化物主要为M_（23）C_6。 马氏体带由位错马氏体、孪晶马氏体、残余奥氏体和少量碳化物组成；
The carbonide in the recarburized layer is mainly M23C6. The martensitic zone is composed of dislocation martensite, twinning martensite, residual austenite and a little carbonide.
这些微区分别为内孪晶马氏体区和位错板条马氏体区。
They are dislocated lath martensite area and twinned martensite area respectively.
受非马氏体组织的影响及可动位错密度降低的作用，屈服强度、屈强比随退火温度升高而升高。
The yield strength, yield ratio increase with the increase of annealing temperature, due to the impact of non-martensite and the decrease of movable dislocation density.
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