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Meeting 2017 TMS Annual Meeting & Exhibition
Symposium Pan American Materials Congress: Advanced Manufacturing
Presentation Title PAN-13: Microhardness Assessment of 316L Stainless Steel Fabricated by Laser Engineered Net Shaping
Author(s) Katherine Acord, Thale Smith, Julie Schoenung
On-Site Speaker (Planned) Katherine Acord
Abstract Scope Laser Engineered Net Shaping (LENS®) is a direct energy deposition processing technique that enables the formation of fine microstructures due to rapid solidification leading to improved strength and hardness; however, directional solidification results in locally varying thermal history that alters mechanical properties. The goals of this study are: to assess the role of feedstock powder characteristics on solidification structure and mechanical properties, and to determine the potential for inhomogeneous mechanical behavior due to the thermal effect of LENSŪ processing. Two 316L austenitic stainless steel powders produced by gas atomization (GA) and water atomization (WA) were utilized. Microindentation hardness testing was conducted using a geometric array in order to systematically evaluate the position-dependent mechanical properties. Findings elucidate the role of feedstock powder in controlling final properties of LENS® builds, while presenting a novel approach to thermal behavior assessment that accounts for the statistical significance of microhardness measurements.
Proceedings Inclusion? Planned: Stand-alone book in which only your symposium’s papers would appear (indicate title in comments section below)

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Carbon Based Coatings Deposited on Nitrided Stainless Steel: Study of Thermal Degradation
Combining CALPHAD-informed Phase-field Modeling with Rapid Solidification Experiments for Prediction of Microstructure Evolution during Laser-based Additive Manufacturing
Comparative Mechanical Analysis between Epoxy Composite Reinforced with Random Short Cuarua Fibers and Aligned Long Curaua Fibers
Conceptual-Functional Model of Drilling Electrochemical Discharge Machining
Damage Evaluation of Impact by Low-speed on Fiberglass Composite with Laminates Aluminum 2024-T3
Deep Drilling in Soda-lime Glass Using Air Jet Assisted Electrochemical Discharge Machining (ECDM)
Effect of Tool Rotation on Tool Wear Phenomenon in Rotary Tool micro-USM
Finite Element Modelling of Current-activated, Pressure-assisted Densification (CAPAD): The Role of Materials Properties and Geometry on Thermal Gradients
Green Machining Process: Near-dry Electric Discharge Machining
Mechanisms and Influence of In-situ Pre-heating during Friction Welding
Microstructure-processing-property Relationships in Nanocrystalline Ceramics Produced Using Current-activated, Pressure-assisted Densification (CAPAD)
Numerical Modeling of High-Velocity Impact Welding
PAN-12: Influence of Dendritic Morphology on the Strain Field of Dendritic Solidification Structures
PAN-13: Microhardness Assessment of 316L Stainless Steel Fabricated by Laser Engineered Net Shaping
Reducing Radiation Exposure to the Rectum during Prostate Cancer Radiation Therapy using NiTi Shape Memory Alloy
Selective Laser Sintering of Polyamide/Hydroxyapatite Scaffolds
Sintering of Anisotropic Porous Microstructures
Tailoring the Mechanical Properties of Additively Manufactured Ti-6Al-4V Alloys by Post Processing

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