EFFECT OF INTERMETALLIC PHASES ON CORROSION BEHAVIOR AND MECHANICAL PROPERTIES OF DUPLEX STAINLESS STEEL AND SUPER-DUPLEX STAINLESS STEEL

Article English OPEN
Prabhu Paulraj ; Rajnish Garg (2015)
  • Publisher: Society of Polish Mechanical Engineers and Technicians
  • Journal: Advances in Science and Technology Research Journal (issn: 2080-4075, eissn: 2299-8624)
  • Related identifiers: doi: 10.12913/22998624/59090
  • Subject: Mechanical engineering and machinery | corrosion | welding | TJ1-1570 | stainless steel | Engineering (General). Civil engineering (General) | Technology | Manufactures | intermetallic phases | TD1-1066 | mechanical properties | TA1-2040 | T | Environmental technology. Sanitary engineering | TS1-2301
    mesheuropmc: technology, industry, and agriculture

Duplex Stainless Steels (DSS) and Super Duplex Stainless Steel (SDSS) have excellent integration of mechanical and corrosion properties. However, the formation of intermetallic phases is a major problem in their usage. The mechanical and corrosion properties are deteriorated due to the presence of intermetallic phases. These phases are induced during welding, prolonged exposure to high temperatures, and improper heat treatments. The main emphasis of this review article is on intermetallic phases and their effects on corrosion and mechanical properties. First the effect of various alloying elements on DSS and SDSS has been discussed followed by formation of various intermetallic phases. The intermetallic phases affect impact toughness and corrosion resistance significantly. Their deleterious effect on weldments has also been reviewed.
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