Quasistatic and fatigue behavior of an AISI H13 steel obtained by additive manufacturing and conventional method

José F. Garcias; Rui F. Martins; Ricardo Madeira Branco; Zbigniew Marciniak; Wojciech Macek; Cândida Pereira; Cyril Santos

doi:10.1111/ffe.13565

Quasistatic and fatigue behavior of an AISI H13 steel obtained by additive manufacturing and conventional method

José F. Garcias, Rui F. Martins, Ricardo Madeira Branco, Zbigniew Marciniak, Wojciech Macek, Cândida Pereira, Cyril Santos

Research output: Contribution to journal › Article › peer-review

28 Citations (Scopus)

Abstract

This work aims to compare the mechanical behavior of an AISI H13 steel obtained by additive manufacturing with that obtained by conventional manufacturing methods. The average values of the ultimate tensile strength (UTS) and ductility obtained for the specimens produced by the conventional method were equal to 658 MPa and 18%, respectively, which compares with 503 MPa and 0.75% registered for the selective laser melting (SLM) specimens. Inversely, the average hardness value determined for the SLM specimens was higher, 450 HV, than the observed for the conventional, 200 HV. In addition, the maximum applied stress corresponding to a fatigue limit's endurance of 2 × 10⁶ cycles was equal to 340 and 85 MPa for conventional and SLM specimens, respectively. Therefore, from a fatigue design point of view, it was possible to infer that σ_max/UTS = 0.17 for the SLM specimens tested. Porosity and lack of fusion influenced the static and the fatigue strength negatively in the SLM specimens.

Original language	English
Pages (from-to)	3384-3398
Journal	Fatigue & Fracture Of Engineering Materials & Structures
Volume	44
Issue number	12
DOIs	https://doi.org/10.1111/ffe.13565
Publication status	Published - Dec 2021

Keywords

AISI H13
mechanical properties
powder bed fusion
selective laser melting (SLM)

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10.1111/ffe.13565

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title = "Quasistatic and fatigue behavior of an AISI H13 steel obtained by additive manufacturing and conventional method",

abstract = "This work aims to compare the mechanical behavior of an AISI H13 steel obtained by additive manufacturing with that obtained by conventional manufacturing methods. The average values of the ultimate tensile strength (UTS) and ductility obtained for the specimens produced by the conventional method were equal to 658 MPa and 18%, respectively, which compares with 503 MPa and 0.75% registered for the selective laser melting (SLM) specimens. Inversely, the average hardness value determined for the SLM specimens was higher, 450 HV, than the observed for the conventional, 200 HV. In addition, the maximum applied stress corresponding to a fatigue limit's endurance of 2 × 106 cycles was equal to 340 and 85 MPa for conventional and SLM specimens, respectively. Therefore, from a fatigue design point of view, it was possible to infer that σmax/UTS = 0.17 for the SLM specimens tested. Porosity and lack of fusion influenced the static and the fatigue strength negatively in the SLM specimens.",

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AU - Garcias, José F.

AU - Martins, Rui F.

AU - Branco, Ricardo Madeira

AU - Marciniak, Zbigniew

AU - Macek, Wojciech

AU - Pereira, Cândida

AU - Santos, Cyril

N1 - Funding Information: info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00667%2F2020/PT# info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00285%2F2020/PT#

PY - 2021/12

Y1 - 2021/12

N2 - This work aims to compare the mechanical behavior of an AISI H13 steel obtained by additive manufacturing with that obtained by conventional manufacturing methods. The average values of the ultimate tensile strength (UTS) and ductility obtained for the specimens produced by the conventional method were equal to 658 MPa and 18%, respectively, which compares with 503 MPa and 0.75% registered for the selective laser melting (SLM) specimens. Inversely, the average hardness value determined for the SLM specimens was higher, 450 HV, than the observed for the conventional, 200 HV. In addition, the maximum applied stress corresponding to a fatigue limit's endurance of 2 × 106 cycles was equal to 340 and 85 MPa for conventional and SLM specimens, respectively. Therefore, from a fatigue design point of view, it was possible to infer that σmax/UTS = 0.17 for the SLM specimens tested. Porosity and lack of fusion influenced the static and the fatigue strength negatively in the SLM specimens.

AB - This work aims to compare the mechanical behavior of an AISI H13 steel obtained by additive manufacturing with that obtained by conventional manufacturing methods. The average values of the ultimate tensile strength (UTS) and ductility obtained for the specimens produced by the conventional method were equal to 658 MPa and 18%, respectively, which compares with 503 MPa and 0.75% registered for the selective laser melting (SLM) specimens. Inversely, the average hardness value determined for the SLM specimens was higher, 450 HV, than the observed for the conventional, 200 HV. In addition, the maximum applied stress corresponding to a fatigue limit's endurance of 2 × 106 cycles was equal to 340 and 85 MPa for conventional and SLM specimens, respectively. Therefore, from a fatigue design point of view, it was possible to infer that σmax/UTS = 0.17 for the SLM specimens tested. Porosity and lack of fusion influenced the static and the fatigue strength negatively in the SLM specimens.

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Quasistatic and fatigue behavior of an AISI H13 steel obtained by additive manufacturing and conventional method

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