Does anyone know the method of changing the as-welded columnar austenite microstructure into equiaxed austenite microstructure?

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Shitong Wei

This figure indicates the as-welded columnar austenite microstructure.

Belma Fakić

Dear,

Did you try heat treatment, put material at temp. high then austenitisation temp.?

Weld metal is cast microstructure.

Harald Rojacz

Heat treatment at certain temperatures (Normalising ~ 1000°C) for several hours should get rid of the as welded microstructure.

Dear Harald Rojacz. The weld metal is the full austensitic microstructure, how can we conduct the normalising treatment?