微观组织观察表明，在锻造或高温轧制状态下获得了以低碳马氏体为主，含少量贝氏体和残余奥氏体的复合组织。
Observations showed that the micro-structure of the steel after forging or high temperature rolling was composed of low-carbon martensite, a little part of bainite and residual austenite.
试验表明：该钢空冷条件下即可获得准贝氏体、板条马氏体及孪晶马氏体的复合组织，且具有较好的强韧性配合。
The results indicated that the steel is composed of quasi bainite, lath martensite and twin martensite under air cooling condition, and also has better combination of strength and toughness.
结果表明，实验钢的组织以马氏体和下贝氏体为主。
The results show that the microstructure was mainly composed of martensite and lower-bainite.
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