Orientation and stress state dependent plasticity and damage initiation behavior of stainless steel 304L manufactured by laser powder bed fusion additive manufacturing

The plasticity and ductile fracture behavior of stainless steel 304L fabricated by laser powder bed fusion additive manufacturing was investigated under both uniaxial and multiaxial loading conditions through the use of specialized geometry mechanical test specimens. Material anisotropy was probed t...

Full description

Saved in:
Bibliographic Details
Published in:Extreme Mechanics Letters 2021-05, Vol.45, p.101271, Article 101271
Main Authors: Qin, Shipin, Wang, Zhuqing, Beese, Allison M.
Format: Article
Language:English
Subjects:
Multiaxial fracture
Multiaxial plasticity model
Powder bed fusion
Stainless steel 304L
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The plasticity and ductile fracture behavior of stainless steel 304L fabricated by laser powder bed fusion additive manufacturing was investigated under both uniaxial and multiaxial loading conditions through the use of specialized geometry mechanical test specimens. Material anisotropy was probed through the extraction of samples in two orthogonal material directions. The experimentally measured plasticity behavior was found to be anisotropic and stress state dependent. An anisotropic Hill48 plasticity model, calibrated using experimental data, was able to accurately capture this behavior. A combined experimental–computational approach was used to quantify the ductile fracture behavior, considering both damage initiation and final fracture. An anisotropic Hosford–Coulomb model was used to capture the anisotropic and stress state dependent fracture behavior.
ISSN:2352-4316
2352-4316
DOI:10.1016/j.eml.2021.101271