Q299
Paramagnetic alpha iron changes to gamma iron at
A.
770°C
B.
912°C
AnswerC.
1440°C
D.
1539°C
Answer: Option B
Solution
Answer: Option B
Solution:
Below 912°C (1,674°F) iron again adopts the BCC structure characteristic of α-iron, also called ferrite. The substance assumes a paramagnetic property and it changes into gamma iron.