A numerical investigation on the effects of porosity on the plastic anisotropy of additive manufactured stainless steel with various crystallographic textures

Jiaojiao Wu, Wenqi Liu, Napat Vajragupta, Alexander Hartmaier, Junhe Lian*

*Tämän työn vastaava kirjoittaja

Tutkimustuotos: Artikkeli kirjassa/konferenssijulkaisussaConference contributionScientificvertaisarvioitu

1 Sitaatiot (Scopus)
13 Lataukset (Pure)

Abstrakti

For additive manufacturing materials, different process parameters might cause non-negligible microstructural defects. Due to the deficient or surplus energy input during the process, porosity would result in significantly different mechanical responses. In addition, the heterogeneity of the microstructure of additive manufactured material could increase the anisotropic behavior in both deformation and failure stages. The aim of this study is to perform a numerical investigation of the anisotropic plasticity affected by the microstructural features, in particular, texture and porosity. The coupling of the synthetic microstructure model and the crystal plasticity method is employed to consider the microstructural features and to predict the mechanical response at the macroscopic level, including both flow curve and r-value evolution. The additive manufactured 316L stainless steel is chosen as the reference steel in this study. Porosity decreases the stress of material, however, it reduces the anisotropy of material with both two types of textures. Regardless of porosity, grains with <111>//BD fiber of reference material is preferable for high strength requirement while the random orientations are favorable for homogeneous deformation in applications.
AlkuperäiskieliEnglanti
OtsikkoESAFORM 2021 - 24th International Conference on Material Forming
Sivumäärä10
ISBN (elektroninen)978-2-87019-303-7
DOI - pysyväislinkit
TilaJulkaistu - 1 huhtik. 2021
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisuussa
TapahtumaInternational ESAFORM Conference on Material Forming - Virtual, Liége, Belgia
Kesto: 1 huhtik. 202130 huhtik. 2021
Konferenssinumero: 24

Conference

ConferenceInternational ESAFORM Conference on Material Forming
Maa/AlueBelgia
KaupunkiLiége
Ajanjakso01/04/202130/04/2021

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