High Chromium Cast Iron: Part Two

High chromium cast irons (HCCI’s) exhibit very good mechanical properties and offer benefits for a range of manufacturing applications.
One of the main flexibilities exhibited is the possibility of HCCI’s to have different matrix structures in different treatment states whether it be austenite in casting state, pearlite in annealing state, martensite in quenching state, and tempered martensite in tempering state.
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Metallography: Part One

Microstructural examinations and visual evaluations of fracture surfaces provide an invaluable insight into the mechanism of component and assembly failures.
Typically, the metallography process uses sample specimens removed and mounted in bakelite plastic. The specimens are then ground to a fine finish with sandpaper and then polished to a mirror finish with diamond or alumina polishing materials.

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