在同样晶粒度和硬度，不添加杂质的条件下，马氏体有较低的屈服强度、较高的冲击断裂功以及较低的塑脆转变温度，这些都由于较细的平均碳化物尺寸引起。
For the same grain size and hardness in the unembrittled conditions, martensite has lower yield strength higher Charpy fracture energy and lower FATT due to finer mean carbide size.
对于直径较细的工件，轧后立即淬火几乎可得到全部马氏体。
As for small diameter workpiece, martensite distribution can be obtained by immediately quenching.
细晶区组织以马氏体为主，组织细小均匀。
Microstructure in fine grain zone was mainly composed of martensite, and its grain size was very small and uniform.
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