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Martensite will appear on the iron-iron carbide phase diagram.
Martensite will appear on the iron-iron carbide phase diagram.
A.正确
B.错误
正确答案：错误
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材料导论
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In the iron-carbide phase diagram, when at the temperatures above the eutectoid and for all times, only austenite will exist.
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Cementite is much harder but more brittle than ferrite.