TY - JOUR
T1 - Phase separation in aged diffusion-couples Fe/Fe-40 at%Cr alloy
AU - Lopez-Hirata, Victor M.
AU - Cayetano-Castro, Nicolas
AU - Dorantes-Rosales, Hector J.
AU - Saucedo-Munoz, Maribel L.
AU - Avila-Davila, Erika O.
PY - 2011
Y1 - 2011
N2 - Diffusion-couples of pure Fe/Fe-40 at%Cr alloy were used to analyze the phase separation process in Fe-Cr alloys. Diffusion-couples were solution treated at 1050°C for 3.6 ks and subsequently aged at 500°C for 3.6-3600 ks. Interdiffusion zones were analyzed by HR-TEM and hardness measurements. The EDS-SEM analysis of solution treated, water-quenched and then aged diffusion-couple permitted to obtain the equilibrium composition of miscibility gap at 500°C to be 14 at% Cr. The HR-TEM analysis of the aged diffusion-couple showed the change in size and volume percentages of precipitates with composition. The hardness measurements of the aged diffusion-couple indicated the age hardening due to the presence of nanometric Cr-rich precipitates in a Fe-rich matrix.
AB - Diffusion-couples of pure Fe/Fe-40 at%Cr alloy were used to analyze the phase separation process in Fe-Cr alloys. Diffusion-couples were solution treated at 1050°C for 3.6 ks and subsequently aged at 500°C for 3.6-3600 ks. Interdiffusion zones were analyzed by HR-TEM and hardness measurements. The EDS-SEM analysis of solution treated, water-quenched and then aged diffusion-couple permitted to obtain the equilibrium composition of miscibility gap at 500°C to be 14 at% Cr. The HR-TEM analysis of the aged diffusion-couple showed the change in size and volume percentages of precipitates with composition. The hardness measurements of the aged diffusion-couple indicated the age hardening due to the presence of nanometric Cr-rich precipitates in a Fe-rich matrix.
KW - Aging
KW - Diffusion-couple
KW - Hardening
KW - Iron-chromium alloys
KW - Phase separation
UR - http://www.scopus.com/inward/record.url?scp=84858331133&partnerID=8YFLogxK
U2 - 10.2320/matertrans.M2011230
DO - 10.2320/matertrans.M2011230
M3 - Artículo
SN - 1345-9678
VL - 52
SP - 2155
EP - 2158
JO - Materials Transactions
JF - Materials Transactions
IS - 12
ER -