Research uncovers how varying particle size distribution affects mechanical properties and corrosion resistance of 316L stainless steel, enhancing powder metallurgy applications.
Powder metallurgy hot isostatic pressing (PM-HIP) is broadly utilized to consolidate AISI 316L austenitic stainless steel for industries such as energy and aerospace applications. The process uses a normal particle size distribution (PSD) of powder up to 500 µm. However, for some applications, a narrower PSD is adopted to avoid defects including chemical inhomogeneity and increase the quality of final components. In this paper, a strategy for optimal utilization of powder production has been explored by establishing 4 different groups of modified PSD of 316L steel for PM-HIP process using gas-atomized powders. The physical properties and chemical compositions of each group of powders were characterized, and corresponding mechanical properties and corrosion resistance of HIP-ed samples were investigated. This investigation aims to broaden the usage of powder production with different PSD in industrial applications, which results in a higher yield and thus aligns with the emphasis on promoting sustainability and cost-effectiveness.
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Yang et al. (2025) studied this question.
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