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Etchant for Ti alloyed 4340 for prior austenitic grain size



(-----) 2006

Hi,

I am struggling to get a correct etchant for my 4340 steel sample which has been alloyed with Ti..The samples have been quenched and tempered(at 3 diff temp)..I have also tried as quenched specimens but that doesn't seem to work.

I have tried nital and variants of picric acid based etchants but that doesn't seem to help me although I was able to get the grain size measurements from the picric acid based etchants for the non-Ti alloyed 4340.

Thanks so much

Pranay Choudhary
Carnegie Mellon University,MSE - Pittsburgh, Pennsylvania
^


April 12, 2011

Have you had any luck with the grain structure on this 4340 material?

Miguel Diaz
- Valencia, California, US
^

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