| |
Suppress precipitation in weldments without
PWHT |
| TEM examination shows that chromium carbide
precipitation in HAZ sensitized at 550°C x300
hrs(using extraction replica method ). Precipitation
of Cr carbides were suppressed even after
long term heat treatment. |
|
|
SCC resistance in 347AP under Polythionic
acid due to phase stability |
Effect of aging condition in HAZ without
PWHT on SCC resistance (ASTM G35 using U-bent
specimen ; 720hrs immersion)
|
|
|
Intergranular corrosion resistance of welded
joints without PWHT |
Effect of aging on IGC resistance in
HAZ of welds ( ASTM A262 method E ; 72
hrs immersion)
|
|
