Abstract

The ASM compilation [1995Vil] of data on this system is based on the following studies. [1955Dom] determined the phase equilibria in the Ti-TiAl-Mn2Ti region between 1200 and 700 °C and presented six isothermal sections at 1200, 1100, 1000, 900, 800, and 750 °C, and six vertical sections at 60, 70, 80, and 90 wt.% Ti and at 5 and 10 wt.%, Mn respectively. [1977Cha] found that Mn2Ti dissolves as much as 30 at.% Al at a constant Ti content. [1989Mab] determined an isothermal section for Al-rich alloys at 1000 °C. This section shows an L1 2 -type cubic compound at the composition Ti 25 Mn 9 Al 66 and an Mn 23 Th 6 -type cubic phase at TiMnAl 2 . Recently, Butler and coworkers [1997But, 1998But, 1999But] presented new experimental data on alloys containing up to 30 at.% Mn, and computed a number of isothermal sections and a liquidus projection for this system.

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