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| Naji, M. |
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Mohr, Gunther
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Topics
Publications (28/28 displayed)
- 2024Tensile and Low‐Cycle Fatigue Behavior of Laser Powder Bed Fused Inconel 718 at Room‐ and High Temperaturecitations
- 2024Tensile and Low‐Cycle Fatigue Behavior of Laser Powder Bed Fused Inconel 718 at Room and High Temperaturecitations
- 2024Impact of illumination technique on the detectability of irregularities in high-resolution images of visual in-situ process monitoring in Laser Powder Bed Fusion
- 2024Comparison of NIR and SWIR thermography for defect detection in Laser Powder Bed Fusioncitations
- 2023On critical shifts of the process window due to heat accumulation in laser powder bed fusion
- 2023On the limitations of small cubes as test coupons for process parameter optimization in laser powder bed fusion of metalscitations
- 2023Evolution of Creep Damage of 316L Produced by Laser Powder Bed Fusioncitations
- 2023Elastic modulus data for additively and conventionally manufactured variants of Ti-6Al-4V, IN718 and AISI 316 Lcitations
- 2023Elastic modulus data for additively and conventionally manufactured variants of Ti-6Al-4V, IN718 and AISI 316 Lcitations
- 2023BAM reference data: Temperature-dependent Young's and shear modulus data for additively and conventionally manufactured variants of austenitic stainless steel AISI 316L
- 2023BAM reference data: Temperature-dependent Young's and shear modulus data for additively and conventionally manufactured variants of Ni-based alloy Inconel IN718
- 2023BAM reference data: Temperature-dependent Young's and shear modulus data for additively and conventionally manufactured variants of Ti-6Al-4V
- 2022Creep and creep damage behavior of stainless steel 316L manufactured by laser powder bed fusioncitations
- 2022On the registration of thermographic in situ monitoring data and computed tomography reference data in the scope of defect prediction in laser powder bed fusioncitations
- 2022Understanding the impact of texture on the micromechanical anisotropy of laser powder bed fused Inconel 718citations
- 2022Triaxial Residual Stress in Laser Powder Bed Fused 316L: Effects of Interlayer Time and Scanning Velocitycitations
- 2022Experimental and numerical comparison of heat accumulation during laser powder bed fusion of 316L stainless steelcitations
- 2021Triaxial residual stress in Laser Powder Bed Fused 316Lcitations
- 2021Can Potential Defects in LPBF Be Healed from the Laser Exposure of Subsequent Layers? A Quantitative Studycitations
- 2021Mechanical anisotropy of additively manufactured stainless steel 316L: An experimental and numerical studycitations
- 2021Investigation of the thermal history of L-PBF metal parts by feature extraction from in-situ SWIR thermographycitations
- 2021Process Induced Preheating in Laser Powder Bed Fusion Monitored by Thermography and Its Influence on the Microstructure of 316L Stainless Steel Partscitations
- 2021Can potential defects in LPBF be healed from the laser exposure of subsequent layers?citations
- 2020Effects of inter layer time and build height on resulting properties of 316L stainless steel processed by laser powder bed fusioncitations
- 2020Separation of the Formation Mechanisms of Residual Stresses in LPBF 316Lcitations
- 2020In-Situ Defect Detection in Laser Powder Bed Fusion by Using Thermography and Optical Tomography—Comparison to Computed Tomographycitations
- 2020In situ heat accumulation by geometrical features obstructing heat flux and by reduced inter layer times in laser powder bed fusion of AISI 316L stainless steelcitations
- 2020Probing a novel heat source model and adaptive remeshing technique to simulate laser powder bed fusion with experimental validationcitations
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article
Evolution of Creep Damage of 316L Produced by Laser Powder Bed Fusion
Abstract
The damage mechanisms of metallic components produced by process laser powder bed fusion differ significantly from those typically observed in conventionally manufactured variants of the same alloy. This is due to the unique microstructures of additively manufactured materials. Herein, the focus is on the study of the evolution of creep damage in stainless steel 316L specimens produced by laser powder bed fusion. X-ray computed tomography is used to unravel the influence of the process-specific microstructure from the influence of the initial void distribution on creep damage mechanisms. The void distribution of two specimens tested at 600 °C and 650 °C is analyzed before a creep test, after an interruption, and after fracture. The results indicate that the formation of damage is not connected to the initial void distribution. Instead, damage accumulation at grain boundaries resulting from intergranular cracking is observed.