电镜分析指出，复相组织疲劳性能高的原因是复相组织中的下贝氏体回火后析出短杆状碳化物，能有效地阻止疲劳裂纹的萌生及扩展。
TEM analysis reveals that the precipitation of short-bar-shaped carbides in lower-bainite can prevent effectively from initiation and propagation of fatigue cracks.
回火组织中出现少量贝氏体。
研究了回火工艺对新型贝氏体铸钢组织和性能的影响。
The influence of tempering process on microstructure and mechanical properties of new type bainite cast steel was studied.
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