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Meeting Materials Science & Technology 2019
Symposium Corrosion of Additively Manufactured Metals
Presentation Title Evaluation of the Corrosion Response of Additively-Manufactured 17-4 PH Stainless Steel Samples as a Function of Build and Finish Parameters
Author(s) Michael D. Roach, Joseph A Thomas, Karl Nelson, Rod McMillan
On-Site Speaker (Planned) Michael D. Roach
Abstract Scope Additive manufacturing (AM) is quickly becoming a viable alternative for the production of 17-4PH surgical instruments which require both excellent mechanical and chemical properties. Recent studies have shown properly processed AM 17-4PH material to possess mechanical properties comparable to the wrought counterpart, however, few studies exist comparing the corrosion resistance of AM and wrought materials. The primary objective of this study was to compare the corrosion resistance of wrought and AM 17-4PH stainless steel in the H900 condition, including various build angles. A second objective was to examine the effect of laser marking on AM 17-4PH parts. Anodic polarization scans were performed on wrought and three major AM surfaces (sideskin, upskin and downskin) in phosphate buffered saline according to ASTM F2129. Vertical AM specimens exhibited significantly higher pitting potentials (p=0.01) compared to wrought specimens, indicating that AM is a viable process. Laser marking significantly reduced pitting potentials (p<0.001).
Proceedings Inclusion? Definite: At-meeting proceedings

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Corrosion of Additive Materials for Naval Applications
Corrosion of Additively Manufactured Stainless Steels – Process, Structure, and Performance
Corrosion Performance of Aluminium Based Functionally Graded Materials Processed by Wire-arc Additive Manufacturing
Effect of Chloride and Heat Treatment on Pitting Corrosion Resistance and Mechanical Properties of a 316L Stainless Steel Manufactured by the Direct Metal Laser Sintering (DMLS) Process
Effect of Surface Finish on the Corrosion Properties of Additively Manufactured Stainless Steel
Electrochemical Characterization of Additively Manufactured Al-10Si-Mg in Standardized Test Solutions
Evaluation of the Corrosion Response of Additively-Manufactured 17-4 PH Stainless Steel Samples as a Function of Build and Finish Parameters
High Temperature Oxidation and Creep Oxidation of Compositionally Graded Alloys in Air and Supercritical CO2: Modeling and Experiment
High Temperature Oxidation of 718 Alloy Produced by Additive Manufacturing
Hydrogen Concentration and Uptake in Additively Manufactured Austenitic Stainless Steels
Improved Electrochemical Response of SLM 316L SS in Physiological Solutions
Issues in Localized Corrosion of Selective Laser Melted 316L
P3-37: Microstructure and Corrosion Behavior of Alloy 625 Produced by Laser Powder Bed Fusion
Surface Damage of an AM-AlSi10Mg Alloy Exposed to Corrosive Environments with Lack of Fusion Defects and Powder Contamination
Surface Preparation of Additively Manufactured Metals and Subsequent Comparison of Corrosion Characteristics
The Effects of Laser Peening Parameters on the Corrosion and Hardness Properties of Ti6Al4V Alloy
Understanding the Influence of Retained Nitrogen in Additively-Manufactured 17-4 Stainless Steel: Does it Really Improve Corrosion Resistance?

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