Re: [MW:17548] Effect of grain growth in toughness and Softness of a metal

Sudden cooling can increase hardness, but prolonged holding at high temperature can increase grain growth, reduce hardness, depending on the metallurgical conditions.

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From: bala chandar05 <balachandarkandasamy@gmail.com>
To: materials-welding@googlegroups.com
Sent: Tuesday, April 23, 2013 8:53 PM
Subject: Re: [MW:17536] Effect of grain growth in toughness and Softness of a metal

In my opinion increasing in grain size will reducing the toughness, ductility and increasing hardness, brittleness. Grain structure based on cooling rate sudden cooling increasing the hardness, brittleness and Slow cooling increasing toughness, ductility                               ( Example.:Quenching and  Tempering Steels).

Regards,

K.Balachandar

Project Engineer

Domech Fabricators Pvt Ltd

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