Tuesday, September 27, 2011

Re: [MW:12562] Carbides Precipitates on HAZ ; 625 Overlay on AISI 4130

Dear Sir,
              I think u may have to use a buttering layer.

2011/9/27 K.Babu <kbabupsg@gmail.com>

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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regards,
Harish.

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