PSI - Issue 34

T. Silva et al. / Procedia Structural Integrity 34 (2021) 45–50

50

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Author name / Structural Integrity Procedia 00 (2019) 000–000

Table 2. Material properties for the LPBF AMed 18Ni300 maraging steel, adapted from (Silva et al., 2021a,b) Material properties

Young’s modulus [GPa] Hardening law [MPa]

E = 190

0 . 7 + (1 − 0 . 2) 887 . 5 − 362 . 5 1 − e 170 ε p 1 + 0 . 05 ln ˙ ε ˙ ε 0

σ = 0 . 2 950 1 + ε p − ε f = − 0 . 01 + 1 . 77 e − G f = 10 λ = 0 . 0206 T + 15 . 4 c p = 0 . 374 T + 437 . 3 α T = 0 . 0038 T + 9 . 722 ρ = 8033

1 . 5 η 1 + 0 . 03 ln ˙ ε ˙ ε 0

Damage model

Critical energy [mJ mm − 3 ]

Density [kg m − 3 ]

Thermal conductivity [W m − 1 ◦ C − 1 ] Specific heat [J kg − 1 ◦ C − 1 ] Thermal expansion [10 − 6 ◦ C − 1 ]

Acknowledgements

The MAMTool (PTDC / EME-EME / 31895 / 2017) and AddStrength (PTDC / EME-EME / 31307 / 2017) projects are acknowledged, funded by Programa Operacional Competitividade e Internacionalizac¸a˜o, and Programa Operacional Regional de Lisboa funded by FEDER and National Funds (FCT). This work was supported by FCT, through IDMEC, under LAETA, project UIDB / 50022 / 2020.

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