During welding& after welding the heat input generated in the weld area including haz. But the haz area cool rapidly than the weld area. so the hardness would be higher than that of weld metal.
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 hardnessDate: 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 Sangamnerkar09724738118
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