Enhancing the Corrosion Resistance of Additively Manufactured 316L Stainless Steel
Abstract
Funds are provided to synthesize AM 316L samples via L-PBF with varying microstructural characteristics achieved through manipulation of the laser power density and contrast microstructures with samples obtained through DED processing, to quantify porosity fractions and distributions as a function of process parameters via computed tomography (CT), to quantify passivity behavior and susceptibility to pitting and crevice corrosion, to correlate surface chemistry to corrosion product formation via small-spot and variable angle X-ray photoelectron spectroscopy (XPS), to characterize chemical heterogeneities and the role of defect microstructures in solute segregation to fusion and grain boundaries collectively with dislocation cell boundaries, and to correlate microstructural and chemical characteristics with localized degradation modes and corrosion product formation by comparing corrosion test data with the hierarchical microstructural characteristics.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jul 27, 2018
- Source ID
- N000141812614
Entities
People
- Jason Trelewicz
Organizations
- Office of Naval Research
- Research Foundation for the State University of New York
- United States Navy