Wednesday, March 20, 2013

Re: [MW:17164] HAZ hardness

Dear all,

I completely agree your point that variation in grain structure affects the hardness. But the thing is that in welding HAZ is subjected to repeatative number of heat cycles which results in grain coarsening of HAZ. So, are coarse grain responsible for high hardness of HAZ?
Thanks and regards,


On Tue, Mar 19, 2013 at 6:27 PM, paragpan@gmail.com <paragpan@gmail.com> wrote:
Dear Hrushikesh,

It is due to the distortion of grain structure occurred during welding in the HAZ area due to heat transfer from the molten weld metal to the base metal.

Regards,

PARAG

Sent from my HTC


----- Reply message -----
From: "Hrushikesh Sangamnerkar" <hrushi612@gmail.com>
To: <materials-welding@googlegroups.com>
Subject: [MW:17145] HAZ hardness
Date: Mon, Mar 18, 2013 10:50 PM



Dear sir,

Why is the Hardness of HAZ higher than that of Weld?


Thanks and Regards,
Hrushikesh H Sangamnerkar
09724738118

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Hrushikesh H Sangamnerkar
09724738118

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