Effect of ageing on phase evolution and precipitation behaviour of duplex steel

4th Global Conference on Materials Science and Engineering

Podany, P.^1 ; Kover, M.^1 ; Dlouhy, J.^1

COMTES FHT A.s., Prumyslova 995, Dobrany

334 41, Czech Republic^1

关键词: Dilatometric measurements;    Duplex stainless steel;    Duplex steels;    Effect of ageing;    Phase evolutions;    Precipitation behaviour;    Secondary phasis;    Transformation kinetics;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/103/1/012021/pdf
DOI  :  10.1088/1757-899X/103/1/012021

来源: IOP

【 摘 要 】

The isothermal formation of secondary phases in duplex stainless steel was studied. Samples were isothermally heat treated (aged) at temperatures of 700, 800 and 850°C in a quenching dilatometer. Microstructured evolution of secondary phases was analysed by means of optical and scanning electron microscopes. Both common phases, Chi and Sigma, were observed. The resulting shrinkage curves from dilatometric measurements show the potential for research into the formation of minor phases and the estimation of transformation kinetics in this kind of steel.