Dear colleagues, do you know the example of fracture toughness, i.e. KIC, of sigma phase?

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Imhade P. Okokpujie

Please click on this link it will help your understanding. http://www.iitk.ac.in/nicee/wcee/article/2302.pdf ,

http://dl.iran-mavad.com/sell/trans/en/Fracture-toughness-of-a-welded-super- ,

http://www.diva-portal.org/smash/get/diva2:10204/FULLTEXT01.pdf

Krzysztof Wieczerzak

Dear Imhade, thank you for your links. However, I see that my question was not clear enough. I am not looking for fracture toughness of steels that contains sigma phase, but fracture toughness of the sigma phase, eventually indentation toughness (KC).