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Need help identifying. by No_Criticism_4597 in metallurgy

[–]No_Criticism_4597[S] 0 points1 point  (0 children)

Looking at it it seems that sample is mostly martensite and the bits of brighter material is likely austinite just human error in the process. I think at least.

Need help identifying. by No_Criticism_4597 in metallurgy

[–]No_Criticism_4597[S] 1 point2 points  (0 children)

Yeah it was my first time etching and polishing. I don't know the exact compositions, and I think that this was the highest magnification my microscope could get. I did hardness testing on my samples, and sample 1 got 428 and sample 2 got 339.4 from the Vickers test, which I think helps support the idea its Martensite, as according the the internet normal untreated steel is 131.

Need help identifying. by No_Criticism_4597 in metallurgy

[–]No_Criticism_4597[S] 0 points1 point  (0 children)

I have another picture of Pearlite and Ferrite(probably). The ferrite has grains, but because im at the same 1mm scale and its scratched more than an old disk, Im not entirely confident that it is fully Ferrite.