Abstract
The Al-Fe phase diagram reviewed by Kattner and Burton [1993Kat1] shows that the face-centered cubic (fcc) solid solution based on Fe is restricted by a loop. The body-centered cubic (bcc) solid solution exists in both the disordered form A2( Fe) and ordered B2 and D03 forms. The transition from A2 to B2 phase is second-order in nature down to ∼660 °C [1993Kat1]; below 660 °C, a twophase field of (A2+B2) intervenes, indicative of a firstorder transition. The B2 to D03 transition is second-order and occurs below ∼550 °C without an intervening twophase field. Apart from the high-temperature (HT) phase , there are three intermediate phases in the system with restricted ranges of homogeneity: FeAl2, Fe2Al5, and FeAl3. The Al-Ge phase diagram [1984McA] is a simple eutectic system with limited solid solubility in the terminal phases. The Fe-Ge system was reviewed by Kato and Nunoue [1993Kat2]. The solid solution based on fcc Fe is enclosed by a loop. The bcc form of Fe exists both in the disordered A2( Fe) and ordered B2 and D03 forms. The transition from A2 to B2 is second-order in nature. The B2 to D03 transition is first order below 820 °C [1993Kat2]. The other compounds in this system are (D019), (L12), (B81), (B82), Fe6Ge5, FeGe, and FeGe2. For crystal structure data on the above intermediate phases, see [Pearson3].
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
