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本文采用逐次抛光法考查了一种中碳合金钢在300℃等温条件下所获得的V型下贝氏体(B_L)的空间形态。应用这种方法能获得B_L的三维生长信息,并有可能比较B_L生长的扩散机制和切变机制。
In this paper, the spatial morphology of V-type lower bainite (B_L) obtained from isothermal carbonization of medium carbon steel at 300 ℃ was investigated by successive polishing. The application of this method can obtain the 3D growth information of B_L, and it is possible to compare the diffusion mechanism and the shear mechanism of B_L growth.