Issue 58

F.R. Andreacola et al., Frattura ed Integrità Strutturale, 58 (2021) 282-295; DOI: 10.3221/IGF-ESIS.58.21

The ultimate tensile strength does not vary significantly with the printing direction. In fact, the obtained mean values are 1282 MPa, 1314 MPa and 1296 MPa respectively for the vertically, horizontally inclined 5° and 85° samples. The failure strain also shows no significant changes in relation to the different printing orientations. The average values recorded were 14.1% for specimens manufactured vertically and horizontally inclined by 5°, and 14.2% for specimens manufactured horizontally inclined by 85°. Influence of scanning time The yielding strain displays mean values of 751 MPa, 634 MPa and 593 MPa for samples produced respectively with scanning times of 45 s, 50 s and 65 s.

Figure 9: Engineering stress–strain curves of the first group of SLM 17-4PH ss coupons produced.

Figure 10: Engineering stress–strain curves of the second group of SLM 17-4PH ss samples produced.

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