PSI - Issue 54

Paulo Mendes et al. / Procedia Structural Integrity 54 (2024) 340–353 Mendes et al. / Structural Integrity Procedia 00 (2023) 000–000

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last steps were slightly adjusted compared to the earlier steps to minimize the likelihood of high-hardness martensite formation, as there was no post-heat treatment applied. Vickers hardness tests were also performed for the J60 welded joint and are illustrated in Figure 4 and 5. 3030_2steps

A → B →

Fig. 4. Vickers hardness profile for the J60 welded joint with root steps.

3030_full

A →

B →

Fig. 5. Vickers hardness profile for the complete J60 welded joint.

The analysis of the figures confirms that the temperature reached and the cooling rate are su ffi cient to gradually reduce the hardness values in the initial steps. This is evident in the hardness profiles of the incomplete procedure for the 60-millimeter welded joint in a ffi liations A and B, which show the same evolution along a straight-line through the weldment cross-section as the incomplete procedure for the J30 welded joint (Figure 2).