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What is the microstructure of Hadfield’s steel?

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What is the microstructure of Hadfield’s steel?

(a) Austenite

(b) Ferrite

(c) Martensite

(d) Cementite

This question was posed to me during an online exam.

The origin of the question is Stainless Steels & Other Steels in portion Diffusion in Solids & Ferrous Materials of Engineering Material & Metallurgy

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Correct choice is (a) Austenite

Easiest explanation: Hadfield’s manganese steels (Mangalloy) possess great strength and toughness. Its austenite structure is obtained by heating it. This also results in high wear resistance, which finds its applications in bulldozers, crushers, etc.

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