Gents,
Do you have idea on the Inconel 625 Overlay on the AISI 4130/4140
I used P-GTAW, with 150deg cel as preheat & Max . Inter pass is 240 deg cel, PWHT -590 deg. Cel for 3 hrs to reduce the hardness to below 250 VHN
In micro analysis, HAZ showing the carbide precipitates.
Any idea, on why happened like this?
Regards
K.Babu
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