Abstract
Abstract
Two types of duplex stainless steels SAF 2205 and SAF 2305 have been
selected in this study to investigate the effect of aging time and temperature on the
tensile strength using (ABI) technique. Metallographic studies were conducted on
heat treated duplex stainless steels to examine the phase relation ship with tensile
strength.
The results showed that with increasing the aging temperature from 400cº
to 800cº the tensile strength of duplex stainless steels increased and reached its
maximum value at 600cº for 72 hrs. At 1000cº the tensile strength decreased with
increasing the aging time. For both types of duplex stainless steels these results
attributed to metallurgical aspects like carbide precipitation, sigma phase, change
in grain size, etc.
