Question: Martensite is a structure obtained by: (a) Quenching austenite (b) Quenching austenite and heating into the range of 200 to (375^{circ} mathrm{C}) (c) Quenching austenite

Martensite is a structure obtained by:

(a) Quenching austenite

(b) Quenching austenite and heating into the range of 200 to \(375^{\circ} \mathrm{C}\)

(c) Quenching austenite and heating into the range of 375 to \(660^{\circ} \mathrm{C}\)

(d) Quenching austenite and heating into the range of 600 to \(700^{\circ} \mathrm{C}\)

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