Posted by Stu Smalinskas on June 17, 2010 at 10:18:21:
In Reply to: Re: Retained Austenite posted by Jeff on June 16, 2010 at 09:13:44:
I'm a lab engineer at a bearing company. We measure % retained austenite (RA) using X-ray diffraction methods. Metallographic methods are good only above 10% RA, where it becomes visible, and is subjective and unreliable. Most of our product is specified at 10% RA and below.