High-temperature phase relations in the ternary Ga-Mn-Ni system |
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Authors: | C Wedel and K Itagaki |
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Affiliation: | (1) Institute for Advanced Materials Processing, Tohoku University, Aoba-ku, 980-8577 Sendai, Japan |
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Abstract: | Isothermal sections of the ternary Ga-Mn-Ni phase diagram at 800 and 1000 °C have been investigated for alloys with a manganese
content below 70 at.% for 800 °C and a content below 65 at.% at 1000 °C. The high-temperature phase relations among the solid
phases have been analyzed with diffusion couples and by energy dispersion x-ray spectroscopy (EDX) on quenched two-phase alloys.
For these temperatures, the solidus line was determined from quenched alloys from the solid and liquid two-phase region by
EDX analysis and the liquidus line by an overall evaluation of the phases found in the quenched alloys.
By powder x-ray diffraction (XRD) measurements, the results for the equilibria among the solid phases were confirmed and the
lattice parameters for the martensite formed from the β phase have been determined over a wide range of compositions. |
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