PSI - Issue 37

E. Entezari et al. / Procedia Structural Integrity 37 (2022) 145–152 E.Entezari et al./ Structural Integrity Procedia 00 (2021) 000 – 000

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Fig 5. SEM fracture photographs of tensile test specimens quenched at (a) 260 °C (b) 280 °C (c) 300 °C, and of impact test specimens quenched at (d) 260 °C (e) 280 °C (f) 300 °C. Fig. 6 shows the XRD spectra of the steel samples treated by the Q-P process. The volume fraction of retained austenite for samples quenched at 260, 280, and 300° C was 12, 14, and 17%, respectively.

Fig 6. XRD spectra of studied samples quenched at different temperatures.