Posted by John Brown on June 27, 2008 at 07:58:00:
In Reply to: Retained Austenite posted by Ravi Kumar Vummiti on June 27, 2008 at 04:45:39:
2 to 4 percent nitric acid in alcohol works for most carbon steels and low alloy steels. Etch polished sample 5 to 20 seconds. Retained austenite appears white, not as white as ferrite.