Surface Laser Quenching as an Alternative Method for Conventional Quenching and Tempering Treatment of 1538 MV Steel

Figure 3

Grain morphology of the longitudinal section for (a) RAW sample, (b) LQ sample, and (c) CQT sample. Higher magnification images show (d) perlitic and ferritic phases for RAW material, (e) homogeneous martensitic phase, and (f) nonuniform martensitic phase.

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