Phase equilibria at 1473 K in the ternary Al-Cr-Ti system

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• 作者：Mario J. Kriegel^a ; ^{mario.kriegel@iww.tu-freiberg.de} ; Dmytro Pavlyuchkov^a ; ^c ; Damian M. Cupid^b ; Olga Fabrichnaya^a ; Dietrich Heger^a ; David Rafaja^a ; Hans J. Seifert^b
• 关键词：Titanium aluminides ; Phase diagrams ; Al&ndash ; Cr&ndash ; Ti ; Isothermal section
• 刊名：Journal of Alloys and Compounds
• 出版年：2013
• 出版时间：15 February, 2013
• 年：2013
• 卷：550
• 期：Complete
• 页码：519-525
• 全文大小：1725 K

文摘

The isothermal section at 1473 K of the Al-Cr-Ti system was experimentally studied in the compositional region below 75 at. % Al using X-ray diffraction, scanning electron microscopy, electron probe micro-analysis and electron backscatter diffraction. The formation of the continuous ¦Â phase solid solution was confirmed, three tie-triangles ¦Ó + ¦Å-TiAl₃ + ¦Æ-Ti₂Al₅, ¦Ó + ¦Ã-TiAl + ¦Â and ¦Ó + ¦Â + (Al₈Cr₅)_h were determined, and several tie-lines were measured. The homogeneity ranges of the ¦Ó, ¦Ã-TiAl and (Al₈Cr₅)_h phases and the ternary extension of the C14 Laves phase (¦Ã-Ti(Al,Cr)₂) into the Al-Cr-Ti system were also investigated.