About this Abstract |
Meeting |
2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
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Symposium
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2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
|
Presentation Title |
Revealing Texture-induced Abnormal Tensile Deformation Behavior in Additively Manufactured Haynes 282 using Crystal Plasticity Simulations |
Author(s) |
Indrajit Nandi, Nabeel Ahmad, Nima Shamsaei, Shuai Shao |
On-Site Speaker (Planned) |
Indrajit Nandi |
Abstract Scope |
A ductile fracture typically features a dimpled surface appearance and cup-and-cone morphology because of micro void coalescence. Tensile fracture surfaces of additively manufactured Haynes 282, a nickel-base superalloy, in this work exhibit elliptical shape – an aberration to classic failure mode. Both microstructural characterization and fractography are performed using scanning electron microscopy (SEM) on the tensile deformed surface to assess the fracture behavior. To gain better mechanistic insights into the governing factors of this elliptical shape fracture, crystal plasticity finite element analysis (CPFEA) simulations are performed using the experimentally calibrated material parameters. Uniaxial tensile loading simulations are carried out on a polycrystalline aggregate of columnar grains structure. The initial texture are varied to the CPFEA simulation to emulate the experimental microstructure. The mechanical response and shape of the fracture surface obtained from the simulations are compared with the experimental tensile geometry to illustrate the texture depended deformation inhomogeneity. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |