Cooling of Pure Iron | Material Science | by Prateek Gaikwad скачать в хорошем качестве

Cooling of Pure Iron | Material Science | by Prateek Gaikwad

Iron is relatively soft and ductile ● It shows the property of allotropy (exist in more than one crystal structure) ● Its melting point is 1539 ºC ● At normal room temperature iron has BCC structure and is called α-Fe or α-ferrite ● Solubility of carbon in α-Fe is very low (0.008% at room temperature and 0.025% at its stable temperature ● At 910 ºC it changes to FCC structure and is called γ-Fe or austenite ● maximum solubility of carbon in γ-Fe is 2.04% at 1148 ºC ● At 1401 ºC it again changes to BCC structure and is called δ-Fe or δ-ferrite ● Maximum solubility of carbon in δ-Fe is 0.1 % at 1493 ºC ● At 768 ºC magnetic property of Fe disappears and it becomes nonmagnetic ● Critical temperature of pure iron are 1401 ºC, 910 ºC and 768 ºC (curie point)