View of chloride stress corrosion cracking in a 316 stainless steel chemical processing piping system. Chloride stress corrosion cracking in austenitic stainless steel is characterized by the multi-branched "lightning bolt" transgranular crack pattern. (Mag: 300X)
Microstructure of ductile iron under a 100X microscope. Ductile iron is a relatively new material that has been created in the 1940s. It has much better mechanical results that gray iron, while still being less expensive to produce than cast steel, making it a material used in a wide variety of industries.
X65 steel metallography
microstructure of steel - Google Search
Martensite and bainite by Metalografia on DeviantArt
metallography - Google Search
The dark patches are hard regions called pearlite; the light areas are ferrite. This is a common microstructure for many steels. G2MT Labs provides high-quality metallography and microscopic analysis with the expertise to help you understand and use the results.