THE REPEATABILITY OF ADDITIVELY MANUFACTURED 17% CHROMIUM � 4% NICKEL PRECIPITATION HARDENED STAINLESS STEEL: COMPONENT QUALIFICATION METHODOLOGY

Author/Creator

Author/Creator ORCID

Date

2022-01-01

Department

Mechanical Engineering

Program

Engineering, Mechanical

Citation of Original Publication

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Abstract

Metal additive manufacturing (AM) is being explored as a reliable and cost-effective tool in the rehabilitation and construction of current and next-generation marine vehicles. Precipitation hardened stainless steels have been recognized for research due to their increased corrosion resistance and tensile strength capability. The current study is focused on AM 17% Chromium � 4% Nickel precipitation hardened (17-4 PH) stainless steel powder. Six (6) identical geometric builds were constructed at the same location using Powder Bed Fusion (PBF) - Direct Metal Laser Sintering (DMLS). After undergoing post-processing treatments, samples were harvested from each build plate for comparative microhardness, and microsample mechanical tensile testing analysis. As a part of a repeatability study, this work aims to determine the impact of manufacturing and post-processing techniques on material properties fabricated by PBF - DMLS.