Phase diagrams and ternary compounds of the Al-Mg-Cr and the Al-Mg-Mn systems in Al-rich side

忠一, 大西; 義三, 中谷; 恭治, 清水

doi:10.2464/jilm.23.202

Cited by 9 publications

(8 citation statements)

References 1 publication

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“…19 and 20. Ohnishi et al [69] also reported two-phase (FCC + Al 6 Mn) regions (not shown here) at very low Mg and Mn contents at 400 and 450°C which are inconsistent with the optimized Al-Mn binary phase diagram. In a different work, Ohnishi et al [70] studied six Al-rich alloys, showing the two-phase FCC + Al 6 Mn region to be stable for 1 £ wt.% Mn £ 2 and 0 £ wt.% Mg £ 4, in agreement with the present calculations.…”

Section: Al-rich Alloysmentioning

confidence: 68%

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Thermodynamic Assessment of the Al-Mn and Mg-Al-Mn Systems

Shukla

Pelton

2008

J. Phase Equilib. Diffus.

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The binary Al-Mn system has been critically evaluated based upon available phase equilibrium and thermodynamic data, and optimized model parameters have been obtained giving the Gibbs energies of all phases as functions of temperature and composition. The liquid solution has been modeled with the modified quasichemical model to account for short-range ordering. The results have been combined with those of our previous optimizations of the Al-Mg and Mg-Mn systems to evaluate and optimize the Mg-Al-Mn system. All available data for the ternary system are reproduced with only one small ternary model parameter for the liquid phase.

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Section: Al-rich Alloysmentioning

confidence: 68%

“…Ohnishi et al [69] studied Al-rich alloys at 400 and 450°C by metallography and XRD. Isothermal sections at 400 and 450°C are compared with the experimental data in Fig.…”

Section: Al-rich Alloysmentioning

confidence: 99%

Thermodynamic Assessment of the Al-Mn and Mg-Al-Mn Systems

Shukla

Pelton

2008

J. Phase Equilib. Diffus.

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“…The crystal structure of the E phase has been determined successfully by Samson (1958) using a single-crystal multiple-film method. Since the computed powder diffraction intensities based on Samson's parameters for the E phase were in close agreement with the observed powder diffraction intensities, Ohnishe et al (1973) concluded that the T phase was also F-centred cubic with a lattice constant a = 14.529(1)A,, space group Fd3m, and basic composition A1,sMg3Mn2. This paper reports the single-crystal structure analysis of the T phase.…”

Section: Commentmentioning

confidence: 48%

“…In phase-diagram studies of the Al-rich part of the A1-Mg-Mn system (Ohnishe Nakatani & Shimizu, 1973), the T phase was found to have a very similar powder diffraction pattern to that of the E phase. The crystal structure of the E phase has been determined successfully by Samson (1958) using a single-crystal multiple-film method.…”

Section: Commentmentioning

confidence: 99%

T-phase Al18Mg3Mn2

Fun¹,

Lin²,

Lee³

et al. 1994

Acta Crystallogr C

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“…Numerous researchers 18,19,[30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47] investigated the phase equilibria of the ternary Mg-Al-Mn system. All the experimental data are available near the Mg-Al edge of the ternary system.…”

Section: Mg-al-mn Systemmentioning

confidence: 99%

Thermodynamic Description of the Mg-Mn, Al-Mn and Mg-Al-Mn Systems Using the Modified Quasichemical Model for the Liquid Phases

Asgar-Khan

Medraj

2009

Mater. Trans.

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A self-consistent thermodynamic model of the Mg-Mn, Al-Mn and Mg-Al-Mn systems has been developed. The major difference between this work and the already existing assessments of these systems is the application of the modified quasichemical model for the liquid phase in each system while most of the existing descriptions use the random mixing model. In the absence of key data for the Mg-Mn system, the calculated thermodynamic properties from the model have been found comparable to other similar systems and the estimated critical temperature of the Mg-Mn liquid miscibility gap using the available empirical equation has been found to be in acceptable agreement with the calculated value. A comparison between the current work and the most recent work on the Al-Mn system that uses the same model for the liquid phase reveals that better agreement with the experimental data with less number of model parameters has been achieved in the current work. Kohler symmetric extrapolation model with only one ternary interaction parameter has been used to calculate the ternary Mg-Al-Mn system. The thermodynamic description of the Mg-Al-Mn system has been verified by extensive comparison with the available experimental data from numerous independent experiments. The model can satisfactorily reproduce all the invariant points and the key phase diagram and thermodynamic features of the ternary as well as the constituent binary systems.

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Phase diagrams and ternary compounds of the Al-Mg-Cr and the Al-Mg-Mn systems in Al-rich side

Cited by 9 publications

References 1 publication

Thermodynamic Assessment of the Al-Mn and Mg-Al-Mn Systems

Thermodynamic Assessment of the Al-Mn and Mg-Al-Mn Systems

T-phase Al18Mg3Mn2

Thermodynamic Description of the Mg-Mn, Al-Mn and Mg-Al-Mn Systems Using the Modified Quasichemical Model for the Liquid Phases

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