Abstract Through electron probe (EPMA) and X-ray diffraction (XRD) analysis of the Ti-Cr-Mn equilibrium alloy, the isothermal cross-sections of the Ti-Cr-Mn ternary system at 1 373, 1 173 and 973 K were constructed. According to present results, TiMn2 (Laves C14) has a large solid solubility for Cr, mole fraction about 58% at 973 K, even reaching 60.5% at 1 373 K. In addition, TiMn2 and TiCr2 can not form a continuous solid solution due to their difference in crystal structure. The TiMn1-x phase exists stably at 1 373 K. The solid solubility of Ti in the high temperature σ-H phase is 6.7% (mole fraction), which is higher than its solubility in the low temperature σ-L phase. In the temperature range of 973- 1 373 K, there is no ternary compound found in this ternary system. The phase relationship of Ti-Cr-Mn ternary system in the range of 973-1 373 K determined in this study can provide certain theoretical guidance for the preparation of Ti-Mn-based hydrogen storage alloys in this temperature range.
LI Jiahui,HU Ting,CAI Gemei. Experimental investigation of phase relations in the Cu-Cr-Ti system[J]. Materials Science and Engineering of Powder Metallurgy, 2021, 26(5): 419-427.
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