ラジオルミノグラフ法によるTi-Cr合金中の水素分布の観察

抄録

Hydrogen distribution in Ti-Cr alloys with composition of Ti₅₀Cr₅₀ and Ti₃₀Cr₇₀ around TiCr₂ Laves phase have been quantitatively observed by the tritium radioluminography, and the relation between the hydrogen distribution and microstructure has been examined. Hydrogen concentration in these alloys has been varied depending on the heat treatment conditions. The heat treated specimens at 1300°C has shown the highest value of hydrogen concentration for both alloys as 0.75 mol% for Ti₅₀Cr₅₀ alloy and 4.2 mol% for Ti₃₀Cr₇₀ alloy. This is attributed to the network structure of BCC phase formed by the heat treatment. The highest value of hydrogen concentration in Ti₃₀Cr₇₀ alloy heat treated at 1300°C has suggested that this specimen has an excellent initial activation property.