Microstructure in HAZ (ASME SA516 Grade 70 MTLTV)
Microstructure in HAZ (ASME SA516 Grade 70 MTLTV)
(OP)
Hi Guyz,
Kindly help in analyzing the microstructure in the HAZ region of the welded plate (ASME SA516 Grade 70
Plates after welding are Post weld heat treated.
Just wanted to confirm if there is any harmful microstructure in the HAZ region which is making the impact values very less.
The plate microstructure is ferrite and pearlite however in the HAZ i am not sure if the phases are ferrite / pearlite or martensite.
Kindly help in analyzing the microstructure in the HAZ region of the welded plate (ASME SA516 Grade 70
Plates after welding are Post weld heat treated.
Just wanted to confirm if there is any harmful microstructure in the HAZ region which is making the impact values very less.
The plate microstructure is ferrite and pearlite however in the HAZ i am not sure if the phases are ferrite / pearlite or martensite.





RE: Microstructure in HAZ (ASME SA516 Grade 70 MTLTV)
RE: Microstructure in HAZ (ASME SA516 Grade 70 MTLTV)
RE: Microstructure in HAZ (ASME SA516 Grade 70 MTLTV)
Yes the magnification is same for all the photographs which is 200X. Yes this is my concern about the grain growth. Typically the grain doesn't look like this in the HAZ region.
@metengr
No have not checked yet. Its a good idea to see the hardness value. i will update you about the the hardness values once taken.
RE: Microstructure in HAZ (ASME SA516 Grade 70 MTLTV)
Is the photo progression from the top surface to the bottom surface?