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ection III: Supplemental Literature Review

Al-Mo (Aluminum-Molybdenum) H. Okamoto

The Al-Mo phase diagram in [Massalski2] (1990) was based on the evaluation issued later by [1997Sau]. In the meantime, [1991Sch] reported a more detailed partial phase diagram for the range 0-28 at.% Mo. [2000Oka] updated the Al-Mo phase diagram by combining [1991Sch] and [1997Sau].

Table 1 Phase (Al) Al12Mo bAl5Mo aAl5Mo Al22Mo5 Al17Mo4 Al4Mo Al3Mo Al8Mo3 Al63Mo37 AlMo AlMo3 (Mo)

[2006Eum] re-evaluated the Al-Mo phase diagram with particular attention to phase equilibria among intermediate phases and homogeneity range of each phase by using various means such as DTA, EPMA, X-ray diffraction, and microanalysis. The result is shown in Fig. 1. [2010Cup] attempted to assess this system thermodynamically and

Al-Mo crystal structure data Composition, at.% Mo

Pearson symbol

Space group

Strukturbericht designation

Prototype

0 7.5-8.1 16.7-17.1 16.7-17.1 18.2-18.5 19-19.3 20-20.4 24.8-25.3 26.8-27.8 37 48.1-54.1 74.2-76.6 80-100

cF4 cI26 hP12 hR36 oF216 mC84 mC30 mC32 mC22 ÆÆÆ cI2 cP8 cI2

Fm3m Im3 P63 R3c Fdd2 C2 Cm Cm C2/m ÆÆÆ Im3m Pm3n Im3m

A1 ÆÆÆ ÆÆÆ ÆÆÆ ÆÆÆ ÆÆÆ ÆÆÆ ÆÆÆ ÆÆÆ ÆÆÆ A2 A15 A2

Cu Al12W Al5W ÆÆÆ ÆÆÆ ÆÆÆ Al4W ÆÆÆ ÆÆÆ ÆÆÆ W Cr3Si W

Fig. 1 Al-Mo phase diagram [2006Eum]

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Journal of Phase Equilibria and Diffusion Vol. 31 No. 5 2010

Supplemental Literature Review: Section III calculated the Al-Mo phase diagram. According to their result, the Al-Mo phase melts congruently unlike the peritectic type shown in Fig. 1. Table 1 shows Al-Mo crystal structure data summarized in [2000Oka] with additional information from [2006Eum]. References 1991Sch: J.C. Schuster and H. Ipser, The Al-Al8Mo3 Section of the Binary System Aluminum-Molybdenum, Metall. Trans. A, 1991, 22, p 1729

1997Sau: N. Saunders, The Al-Mo System (Aluminum-Molybdenum), J. Phase Equilib., 1997, 18(4), p 370-378 2000Oka: H. Okamoto, Al-Mo, Desk Handbook: Phase Diagrams for Binary Alloys, ASM International, OH, p 36, 2000 2006Eum: M. Eumann, G. Sauthoff, and M. Palm, Re-evaluation of the Phase Equilibria in the Al-Mo System, Int. J. Mater. Res., 2006, 97(11), p 1502-1511 2010Cup: D.M. Cupid, O. Fabrichnaya, F. Ebrahimi, and H.J. Seifert, Thermodynamic Assessment of the Al-Mo System and of the Ti-Al-Mo System from 0 to 20 at.% Ti, Intermetallics, 2010, 18, p 1185-1196

Journal of Phase Equilibria and Diffusion Vol. 31 No. 5 2010

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