Anisotropic Radiation-Induced Changes in Type 316L Stainless Steel Rods Built by Laser Additive Manufacturing

Evans, Jordan A.; Anderson, Scott; Faierson, Eric J.; Perez-Nunez, Delia; McDeavitt, Sean M.

doi:10.1080/00295450.2018.1502001

Cited by 5 publications

(2 citation statements)

References 64 publications

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“…SLM of austenitic stainless steels can be performed under a wide variety of process parameters including laser power (68–400 W), scan speed (0.3–2.5 m/s), layer thickness (20–50 μm), and hatch distance; the distance between the centre of two adjacent melt pools (40–140 μm) [4,5,6,7,8,9,10,11,12,13,14,15]. Therefore, depending on the process parameters, the alloy may experience a wide variety of temperature gradients, solidification conditions, thermal stresses, and be susceptible to defects such as cracks, pores, and residual stresses.…”

Section: Introductionmentioning

confidence: 99%

Defect Prevention in Selective Laser Melting Components: Compositional and Process Effects

Sabzi

Rivera-Dı́az-del-Castillo

2019

Materials

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A model to predict the conditions for printability is presented. The model focuses on crack prevention, as well as on avoiding the formation of defects such as keyholes, balls and lack of fusion. Crack prevention is ensured by controlling the solidification temperature range and path, as well as via quantifying its ability to resist thermal stresses upon solidification. Defect formation prevention is ensured by controlling the melt pool geometry and by taking into consideration the melting properties. The model’s core relies on thermodynamics and physical analysis to ensure optimal printability, and in turn offers key information for alloy design and selective laser melting process control. The model is shown to describe accurately defect formation of 316L austenitic stainless steels reported in the literature.

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Section: Introductionmentioning

confidence: 99%

Defect Prevention in Selective Laser Melting Components: Compositional and Process Effects

Sabzi

Rivera-Dı́az-del-Castillo

2019

Materials

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“…This sample also represented the parameter in which the highest microhardness and density ratio was obtained. Evans et al [22] prepared 316L stainless steel rods by laser additive manufacturing technology and discussed the microstructural and mechanical changes.…”

Section: Introductionmentioning

confidence: 99%

Laser Additive Manufacturing of 316L Stainless Steel Thin-wall Ring Parts

Zhao¹,

Tian²,

Liu³

et al. 2023

Fluid Dynamics &Amp; Materials Processing

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The process parameters of laser additive manufacturing have an important influence on the forming quality of the produced items or parts. In the present work, a finite element model for simulating transient heat transfer in such processes has been implemented using the ANSYS software, and the temperature and stress distributions related to 316L stainless steel thin-walled ring parts have been simulated and analyzed. The effect of the laser power, scanning speed, and scanning mode on temperature distribution, molten pool structure, deformation, and stress field has been studied. The simulation results show that the peak temperature, weld pool size, deformation, and residual stress increase with an increase in laser power and a decrease in the scanning speed. The scanning mode has no obvious effect on temperature distribution, deformation, and residual stress. In addition, a forming experiment was carried out. The experimental results show that the samples prepared by laser power P = 800 W, V = 6 mm/s, and the normal scanning method display good quality, whereas the samples prepared under other parameters have obvious defects. The experimental findings are consistent with the simulation results.

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Impact of intragranular misorientation on void swelling and inter-granular cavities after ion irradiation in standard and additive manufacturing 316L austenitic steels

Loyer-Prost

Puichaud²,

Flament³

et al. 2023

Journal of Nuclear Materials

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Anisotropic Radiation-Induced Changes in Type 316L Stainless Steel Rods Built by Laser Additive Manufacturing

Cited by 5 publications

References 64 publications

Defect Prevention in Selective Laser Melting Components: Compositional and Process Effects

Defect Prevention in Selective Laser Melting Components: Compositional and Process Effects

Laser Additive Manufacturing of 316L Stainless Steel Thin-wall Ring Parts

Impact of intragranular misorientation on void swelling and inter-granular cavities after ion irradiation in standard and additive manufacturing 316L austenitic steels

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