Physics · Heat Treatment of Steel
During the normalizing process of steel, the specimen is heated _______.
- 1above the upper critical temperature and cooled in the furnace
- 2below the lower critical temperature and cooled in still air
- 3below the upper critical temperature and cooled in still air
- 4above the upper critical temperature and cooled in still air✓
Correct answer
above the upper critical temperature and cooled in still air
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