How to identify transgranular and intergranular mode of fracture by looking at SEM fractographs of impact tested materials?

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Vladimir Dusevich

If you can see grains with flat facets, its intergranular fracture, otherwise it is transgranular one.

https://www.google.com/search?q=intergranular+fracture+sem&hl=en&rlz=1C1OPRB_enUS553US553&tbm=isch&source=iu&ictx=1&fir=ura94TRiY1xRaM%253A%252CVFMyRVn-SGt2gM%252C_&usg=__iyuARn1gBlas-Y_QeMxAC2zHTaI%3D&sa=X&ved=0ahUKEwjAy8Lp27DcAhVo5YMKHciCA9UQ9QEIMjAB#imgrc=ura94TRiY1xRaM:

Thomas Walther

Hi Vladimir, you mean intra-, not intergranular, I assume?

I meant intergranular. May be I had to use word "smooth", not "flat" facets, to avoid confusion with flat facets with river patterns. Anyway, link to pictures I provided should clear possible confusion.

Florian Glodeanu

Do you refer somehow to transgranular and intergranular (not intragranular) fracture?

For transgranular fracture SEM images see: https://www.google.ro/search?q=transgranular+fracture&rlz=1C1GCEA_enRO802RO802&tbm=isch&tbo=u&source=univ&sa=X&ved=0ahUKEwiqj4eyzLTcAhUM1oMKHbl6BnsQsAQIYg&biw=1229&bih=608

Jastej Singh

Yes. I should have written intergranular.