Stainless steel slip bands?

[Naruwan]

Hi,
I had read that slip bands in the grains of stainless steel's microstructure is a sign of cold working. Like to have some advice on the photo-micrograph I had attached. Are these slip bands? Will solution annealing remove slip bands? Cheers!

 

[TVP]

Before commenting, can you provide some additional details on the alloy, the thermomechnical processing history, and the etchant used? For some general information on metallographic examination of stainless steels, check out the following links:

http://www.cartech.com/techarticles.aspx?id=1450

http://www.struers.com/resources/elements/12/101820/Application Notes Stainless Steel English.pdf

 

[Naruwan]

Hi TVP,
This SS304L stainless steel flange was solution annealed at a temperature of 1050 degree celsius and was held at that temperature for 1 hour. It was water quenched afterwards. I used 10% oxalic acid to etch this test specimen. Thanks!

 

[Guest102023]

You should see annealing twins, rather than what looks like a lot of deformation twinning that I see in your micro.