Experimental investigation of the Mg-Al phase diagram from 47 to 63 at.% Al

Autor:	M. Harmelin, Fritz Aldinger, H.L. Su, Hans Leo Lukas, Hans Jürgen Seifert, Patricia Donnadieu, C. Baetzner, G. Effenberg
Rok vydání:	1997
Předmět:	Crystallography Electron diffraction Mechanics of Materials Chemistry Mechanical Engineering Beta phase Homogeneity (physics) Materials Chemistry Metals and Alloys Crystal structure Trigonal crystal system Phase diagram
Zdroj:	Journal of Alloys and Compounds. 247:57-65
ISSN:	0925-8388
DOI:	10.1016/s0925-8388(96)02595-9
Popis:	The purpose of this work was to investigate the MgAl phase diagram in the composition range from 47 to 63 at.% Al which has not previously been consistently determined. The rhombohedral e phase n ear 56 at.% Al is found to form at 410°C following a peritectoid reaction (γ + β → e) and not a peritectic reaction as reported by Schumann and Voss (Giessereiforschung. 33 (1981) 43). The respective homogeneity ranges of the γ phase in the Al-rich part and of the β phase have been determined. Besides the γ, β and e phases, the existence of a high temperature phase (named λ) between 435 and 445°C is suggested. The existence of the ξ phase and of the relevant invariant reactions reported by Schumann and Voss are not confirmed by the present results.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::495a76665e7478f79ededfeb5ab80d9f https://doi.org/10.1016/s0925-8388(96)02595-9 Zobrazit plný text záznamu Full Text from ScienceDirect