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        Ti - V - Cr BCC Alloys System with High Protium Content

        Okada, M,Kuriiwa, T,Tamura, T,Takamura, H,Kamegawa, A 대한금속재료학회(대한금속학회) 2001 METALS AND MATERIALS International Vol.7 No.1

        This paper aims to study the relationship between the protium absorption properties and alloy composition of Ti-V-Cr alloys. We studied the effects of composition of the alloys and the heat-treatment on the protium absorption-desorption properties of Ti-V-Cr alloys, and found that Ti-35V-40Cr alloys show 2.6 mass% protium capacity. The plateau pressure of the alloys increased with decreasing lattice constants, resulting from increasing Cr content. The main phase of the samples containing more than 15%V was a BCC phase in the cast state. These BCC phase alloys exhibited 2.4 mass% protium. It was also found that the heat-treatment was effective in stabilizing a BCC structure in Ti-V-Cr alloys with low V content. The alloy yields the high capacity of 3.0 mass% protium capacity, which will be the highest value at 313 K reported so far. The alloy will be promising since it contains a low amount of the expensive V element.

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