Low-Temperature Mechanical Behavior of Super Duplex Stainless Steel with Sigma Precipitation

Abstract

Experimental studies in various aspects have to be conducted to maintain stable applications of super duplex stainless steels (SDSS) because the occurrence rate of sigma phase, variable temperature and growth direction of sigma phase can influence mechanical performances of SDSS. Tensile tests of precipitated SDSS were performed under various temperatures to analyze mechanical and morphological behavior.

Keywords

• super duplex stainless steel
• σ phase
• sub-zero tensile test
• microstructure analysis
• microcrack