Can anyone analyze microstructures? (Steel AISI D2)

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The discussion focuses on identifying microstructures obtained from austempering AISI D2 steel. Participants suggest consulting the ASM Handbook of Metals, particularly the metallography volume, for guidance. One contributor notes the presence of carbides in a ferrite matrix, speculating that the matrix is likely bainite. The need for expert confirmation on the microstructure is emphasized. Overall, the conversation highlights the challenges in recognizing specific microstructures in materials science.
Bruno R SIlva
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I am doing a work in Materials, and we were supposed to do an austemper (bainitic temper) in the steel AISI D2.
I got this microstructures, but i can't recognize what's in it.

Can someone help?
Captura de ecrã 2015-05-21, às 14.58.43.png
Captura de ecrã 2015-05-21, às 14.58.34.png
Captura de ecrã 2015-05-21, às 14.58.25.png
Captura de ecrã 2015-05-21, às 14.58.14.png
 
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have you tried looking through the asm handbook of metals (i think metallography volume has changed once or twice). 2004 is volume 9. at a glance i would say carbides in a ferrite matrix, but I am not sure about the matrix.
 
The matrix would be bainite.
 

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