PSI - Issue 69

Pekka Kantanen et al. / Procedia Structural Integrity 69 (2025) 53–60

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Fig. 8. EBSD microstructures near quarter thickness of punched SAZ of IAT 650 °C sample.

Fig. 9. EBSD microstructures near quarter thickness of punched SAZ of IAT 700 °C sample.

4. Conclusions The IAT 700 °C material exhibited higher RA fractions and deeper SAZs compared to the IAT 650 °C material. Due to the higher fraction of RA present in the IAT 700 °C material, more strain-induced fresh martensite can form during deformation (in both punching and tensile tests), which can explain higher increase of hardness compared to