A steel containing 0.3% C is heated to various temperatures above the eutectoid temperature, held for 1

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A steel containing 0.3% C is heated to various temperatures above the eutectoid temperature, held for 1 h, and then quenched to room temperature. Using Figure 12-32, determine the amount, composition, and hardness of any marten site that forms when the heating temperature is
(a) 728 ˚C;
(b) 750 ˚C;
(c) 790 ˚C; and
(d) 850 ˚C.
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Essentials of Materials Science and Engineering

ISBN: 978-1111576851

3rd edition

Authors: Donald R. Askeland, Wendelin J. Wright

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