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通过电镜观察，仔细研究某钢贝氏体组织与性能，结果表明，３２０℃等温组织是下贝氏体和马氏体及少量粒状贝氏体，回火后获得良好力学性能。
The microstructure and properties of some steel bainite were studied by electron microscope. The results showed that the isothermal bainite and martensite at 320 ℃ and the small amount of granular bainite obtained the good mechanical properties after tempering.