Open AccessTechnology and Challenges in Additive Manufacturing of Duplex Stainless Steels
Author(s) -
Rayappa Shrinivas Mahale,
Shashanka Rajendrachari,
Shamanth Vasanth,
K. Hemanth,
Nithin Somenahalli Kapanigowda,
Sharath Peramenahalli Chikkegowda,
Adarsh Patil
Publication year - 2021
Publication title -
biointerface research in applied chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.216
H-Index - 11
ISSN - 2069-5837
DOI - 10.33263/briac121.11101119
Subject(s) - materials science , austenite , metallurgy , duplex (building) , corrosion , ferrite (magnet) , toughness , pitting corrosion , microstructure , composite material , dna , biology , genetics
Duplex stainless steels (DSS) comprise equivalent proportions of ferrite (α) and austenite (γ) and exhibit excellent integration of mechanical and corrosion properties. The ferrite matrix provides better strength and stress corrosion resistance, whereas the austenite matrix accounts for good pitting corrosion resistance and toughness. Duplex stainless steels are widely utilized in the chemical industry, oil refineries, and machine industries. Direct energy deposition (DED) and powder bed fusion (PBF) are the two additive manufacturing techniques widely used for metals. This article covers the technologies like processing DSS by selective laser melting (SLM), variation in mechanical and microstructural properties of duplex stainless steels manufactured by additive manufacturing technique, and challenges of additive manufacturing processes.