Crystal structure and protium absorption properties of Ti-Cr-X alloys

Atsunori Kamegawa; Koji Shirasaki; Takuya Tamura; Takahiro Kuriiwa; Hitoshi Takamura; Masuo Okada

doi:10.2320/matertrans.43.470

Crystal structure and protium absorption properties of Ti-Cr-X alloys

Atsunori Kamegawa, Koji Shirasaki, Takuya Tamura, Takahiro Kuriiwa, Hitoshi Takamura, Masuo Okada

ENG - Materials Science

Research output: Contribution to journal › Article

19 Citations (Scopus)

Abstract

This paper aims to develop the vanadium free Ti-Cr-X BCC solid solution alloys with high protium content. The effects of additional elements such as Mo, W, Nb and Ta to the phase formation on the Ti-Cr alloys were studied. It was found that Mo-added heat-treated alloys had the flattened plateau regions with the capacity of more than 2.2 mass% protium with maximum of 3.6 mass% protium content, which is equal to that of Ti-Cr-V alloys. It was found that the Ti-Cr-Mo alloys with BCC structure transformed to protide phase with BCC or FCC structure. The plateau pressure of the Ti-Cr-Mo alloys increased with increasing Mo content, but the lattice parameters decreased. The H/M ratio of the alloy with less than 10at%Mo was 1.8 at 10 MPa hydrogen pressure and was almost unchanged with Mo content.

Original language	English
Pages (from-to)	470-473
Number of pages	4
Journal	Materials Transactions
Volume	43
Issue number	3
DOIs	https://doi.org/10.2320/matertrans.43.470
Publication status	Published - 2002 Mar

Keywords

Body centered cubic phase
Heat-treatment
Protium storage alloys
Titanium-chromium-molybdenum alloys

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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Kamegawa, A., Shirasaki, K., Tamura, T., Kuriiwa, T., Takamura, H., & Okada, M. (2002). Crystal structure and protium absorption properties of Ti-Cr-X alloys. Materials Transactions, 43(3), 470-473. https://doi.org/10.2320/matertrans.43.470

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abstract = "This paper aims to develop the vanadium free Ti-Cr-X BCC solid solution alloys with high protium content. The effects of additional elements such as Mo, W, Nb and Ta to the phase formation on the Ti-Cr alloys were studied. It was found that Mo-added heat-treated alloys had the flattened plateau regions with the capacity of more than 2.2 mass% protium with maximum of 3.6 mass% protium content, which is equal to that of Ti-Cr-V alloys. It was found that the Ti-Cr-Mo alloys with BCC structure transformed to protide phase with BCC or FCC structure. The plateau pressure of the Ti-Cr-Mo alloys increased with increasing Mo content, but the lattice parameters decreased. The H/M ratio of the alloy with less than 10at%Mo was 1.8 at 10 MPa hydrogen pressure and was almost unchanged with Mo content.",

keywords = "Body centered cubic phase, Heat-treatment, Protium storage alloys, Titanium-chromium-molybdenum alloys",

author = "Atsunori Kamegawa and Koji Shirasaki and Takuya Tamura and Takahiro Kuriiwa and Hitoshi Takamura and Masuo Okada",

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AU - Shirasaki, Koji

AU - Tamura, Takuya

AU - Kuriiwa, Takahiro

AU - Takamura, Hitoshi

AU - Okada, Masuo

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N2 - This paper aims to develop the vanadium free Ti-Cr-X BCC solid solution alloys with high protium content. The effects of additional elements such as Mo, W, Nb and Ta to the phase formation on the Ti-Cr alloys were studied. It was found that Mo-added heat-treated alloys had the flattened plateau regions with the capacity of more than 2.2 mass% protium with maximum of 3.6 mass% protium content, which is equal to that of Ti-Cr-V alloys. It was found that the Ti-Cr-Mo alloys with BCC structure transformed to protide phase with BCC or FCC structure. The plateau pressure of the Ti-Cr-Mo alloys increased with increasing Mo content, but the lattice parameters decreased. The H/M ratio of the alloy with less than 10at%Mo was 1.8 at 10 MPa hydrogen pressure and was almost unchanged with Mo content.

AB - This paper aims to develop the vanadium free Ti-Cr-X BCC solid solution alloys with high protium content. The effects of additional elements such as Mo, W, Nb and Ta to the phase formation on the Ti-Cr alloys were studied. It was found that Mo-added heat-treated alloys had the flattened plateau regions with the capacity of more than 2.2 mass% protium with maximum of 3.6 mass% protium content, which is equal to that of Ti-Cr-V alloys. It was found that the Ti-Cr-Mo alloys with BCC structure transformed to protide phase with BCC or FCC structure. The plateau pressure of the Ti-Cr-Mo alloys increased with increasing Mo content, but the lattice parameters decreased. The H/M ratio of the alloy with less than 10at%Mo was 1.8 at 10 MPa hydrogen pressure and was almost unchanged with Mo content.

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