Phase Transformation in Duplex Stainless Steels after Isothermal Treatments, Continuous Cooling and Cold Working

Abstract:

Article Preview

This paper concerns the phase transformation induced by heat treatment and cold rolling in four duplex stainless steel. In 2205 and 2507 , during the isothermal heat treatments, chi-phase precipitates as small particles at the ferrite/austenite boundaries, followed by sigma precipitation. At the lowest temperature the formation kinetic of chi-phase is favoured, with the increasing of time and temperature a progressive transformation of chi to sigma occurs and the kinetic of sigma is favoured. During continuous cooling, the chi -phase appears at low cooling rates. In low Ni grades the grain boundaries precipitation of chromium nitrides were detected , but no sigma and chi. In 2101 the austenite transforms to martensite both after cold rolling and quenching

Info:

Periodical:

Materials Science Forum (Volumes 638-642)

Main Theme:

Edited by:

T. Chandra, N. Wanderka, W. Reimers , M. Ionescu

Pages:

2986-2991

DOI:

10.4028/www.scientific.net/MSF.638-642.2986

Citation:

I. Calliari et al., "Phase Transformation in Duplex Stainless Steels after Isothermal Treatments, Continuous Cooling and Cold Working", Materials Science Forum, Vols. 638-642, pp. 2986-2991, 2010

Online since:

January 2010

Export:

Price:

$35.00

In order to see related information, you need to Login.

In order to see related information, you need to Login.