Tailored deformation behavior of 304L stainless steel through control of the crystallographic texture with laser-powder bed fusion

被引：17
作者：
Sofras, C. [1 ,2 ]
Capek, J. [1 ]
Arabi-Hashemi, A. [3 ]
Leinenbach, C. [3 ]
Frost, M. [4 ]
An, K. [5 ]
Loge, R. E. [6 ]
Strobl, M. [1 ]
Polatidis, E. [1 ]
机构：
[1] Paul Scherrer Inst, Lab Neutron Scattering & Imaging LNS, CH-5232 Villigen, PSI, Switzerland
[2] Ecole Polytech Fed Lausanne, EDMX Mat Sci & Engn, Route Cantonale, CH-1015 Lausanne, Switzerland
[3] Swiss Fed Labs Mat Sci & Technol, Empa, CH-8600 Dubendorf, Switzerland
[4] Oak Ridge Natl Lab, Neutron Sci Directorate, Oak Ridge, TN 37831 USA
[5] Oak Ridge Natl Lab, Neutron Scattering Div, Oak Ridge, TN 37831 USA
[6] Ecole Polytech Fed Lausanne EPFL, PX Grp Chair, Thermomechan Met Lab LMTM, CH-2002 Neuchatel, Switzerland
来源：
MATERIALS & DESIGN | 2022年 / 219卷
基金：
瑞士国家科学基金会;
关键词：
Additive manufacturing; Austenite; Stainless steel; Martensite; Stacking fault energy; Neutron diffraction; STACKING-FAULT ENERGY; INDUCED-PLASTICITY STEEL; MECHANICAL-PROPERTIES; MARTENSITIC TRANSFORMATIONS; ORIENTATION DEPENDENCE; GENERAL MECHANISM; HEAT-TREATMENT; MICROSTRUCTURE; TENSILE; DISLOCATION;
D O I：
10.1016/j.matdes.2022.110789
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Laser-powder bed fusion (L-PBF) has gained significant research interest, not only for its profound advantage of producing near-net shape complex geometries of metallic parts, but also for the possibility of producing tailored microstructures. Here we exploit the capability of manipulating the crystallographic texture by L-PBF to tailor the deformation behavior of austenitic stainless steels. In specific, by adjusting the laser power and the laser scanning speed, tailored crystallographic textures can be obtained, along the uniaxial loading direction in 304L stainless steel samples produced by L-PBF. In situ neutron diffraction and uniaxial tension and compression tests are undertaken to investigate the extent of the transformation induced plasticity effect and to correlate it with the tailored macrostructures. The influence of the initial and the evolving crystallographic texture on the deformation behavior is demonstrated and elaborated accordingly. The observed asymmetry in the deformation behavior between tension and compression is also discussed in detail.
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页数：14
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