In the iron-carbide phase diagram, when at the temperatures above the eutectoid and for all times, only austenite will exist.


In the iron-carbide phase diagram, when at the temperatures above the eutectoid and for all times, only austenite will exist.

A.正确

B.错误

正确答案:正确


Tag:材料导论 时间:2022-01-28 20:08:30