Acta Metallurgica Sinica (English Letters) ›› 2015, Vol. 28 ›› Issue (8): 1074-1081.DOI: 10.1007/s40195-015-0297-6
• Orginal Article • Previous Articles
Chong-Feng Sun1, Sheng-Qi Xi(), Yue Zhang, Xiao-Xue Zheng, Jing-En Zhou
Received:
2015-07-18
Revised:
2015-07-18
Online:
2015-07-18
Published:
2015-08-20
Chong-Feng Sun, Sheng-Qi Xi, Yue Zhang, Xiao-Xue Zheng, Jing-En Zhou. Thermodynamic Characteristic and Phase Evolution in Immiscible Cr-Mo Binary Alloys[J]. Acta Metallurgica Sinica (English Letters), 2015, 28(8): 1074-1081.
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Elements | T m (K) | V 2/3 (cm2) | φ * (V) | n ws 1/3 [(d.u.) | K (1010 Pa) | μ (1010 Pa) | P (kJ V-2 cm-1) | Q (kJ V-1) | R/P |
---|---|---|---|---|---|---|---|---|---|
Mo | 2890 | 4.4 | 4.65 | 1.73 | 26.12 | 12.56 | 14.1 | 132.54 | 0 |
Cr | 2130 | 3.7 | 4.65 | 1.77 | 16.02 | 11.53 | 14.1 | 132.54 | 0 |
Table 1 Parameters used for free-energy change calculation [14-16]
Elements | T m (K) | V 2/3 (cm2) | φ * (V) | n ws 1/3 [(d.u.) | K (1010 Pa) | μ (1010 Pa) | P (kJ V-2 cm-1) | Q (kJ V-1) | R/P |
---|---|---|---|---|---|---|---|---|---|
Mo | 2890 | 4.4 | 4.65 | 1.73 | 26.12 | 12.56 | 14.1 | 132.54 | 0 |
Cr | 2130 | 3.7 | 4.65 | 1.77 | 16.02 | 11.53 | 14.1 | 132.54 | 0 |
Fig. 4 XRD patterns of the Cr-62Mo, Cr-35Mo and Cr-15Mo mixed powders milled at 243 K for 18 h Angles of the peaks in Fig. 5 are used to determine the interplanar spacing by the Bragg equation [20]: λ=2dhkl sinθ, (2)
Solid solutions | a m | a ss | μ |
---|---|---|---|
Cr-62Mo | 0.3096 | 0.3056 | 1.013 |
Cr-35Mo | 0.3032 | 0.2993 | 1.013 |
Cr-15Mo | 0.2968 | 0.2946 | 1.007 |
Table 2 The lattice parameters of the three supersaturated solid solutions
Solid solutions | a m | a ss | μ |
---|---|---|---|
Cr-62Mo | 0.3096 | 0.3056 | 1.013 |
Cr-35Mo | 0.3032 | 0.2993 | 1.013 |
Cr-15Mo | 0.2968 | 0.2946 | 1.007 |
Fig. 6 a XRD patterns of Cr-35Mo powder milled at 258 K for different time; b analysis of the diffraction peak at ~42.45° for Cr-65Mo powder milled at 258 K for 18 h
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