Journal ArticleDOI
Relation between hydrogen embrittlement and the formation of hydride in the group V transition metals
C. V. Owen,T. E. Scott +1 more
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In this article, the embrittlement of vanadium and tantalum by hydrogen has been investigated with the ultimate goal being to answer three specific questions concerning ductility behavior in different temperature ranges.Abstract:
The embrittlement of vanadium and tantalum by hydrogen has been investigated with the ultimate goal being to answer three specific questions concerning ductility behavior in different temperature ranges. Torsion pendulum internal friction and another technique using the torsion pendulum as well as visual observations have been used to establish the solid solubility curve in the V-H and the Ta-H systems. The primary variables studied in this work were tensile strain rate, test temperature and hydrogen content. The results have been analyzed and tentative hypotheses have been set forth to explain the ductility behavior of the hydrogen charged metals.read more
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Non-Pd BCC alloy membranes for industrial hydrogen separation
TL;DR: In this paper, the authors discuss the key scientific issues pertaining to the development of body-centred-cubic (BCC) alloy membranes in high-temperature industrial processes, including hydrogen solubility and diffusivity, embrittlement and manufacturing.
Journal ArticleDOI
Mechanisms of hydrogen induced delayed cracking in hydride forming materials
TL;DR: In this article, a quantitative model for hydrogen cracking in Zr-2.5 pct Nb is presented and compared with available experimental data, showing that the process occurs in an intermittent fashion; hydride clusters accumulate at the crack tip followed by unstable crack advance and subsequent crack arrest in repeated cycles.
Journal ArticleDOI
Elastic and plastic accommodation effects on metal-hydride solubility☆
TL;DR: In this paper, a model that is capable of accounting for the hysteresis observed in the measured terminal solid solubilities (TSS) of metal hydride systems is presented.
Journal ArticleDOI
An electron-optical study of β-hydride and hydrogen embrittlement of vanadium
Shigeo Takano,Taira Suzuki +1 more
TL;DR: The structure of β-hydride precipitated in the b.c. matrix of hydrogen charged vanadium has been studied by electron diffraction in conjunction with electronmicroscopy.
Journal ArticleDOI
Low temperature hydrogen embrittlement of niobium II—Microscopic observations☆
M.L. Grossbeck,H.K. Birnbaum +1 more
TL;DR: In this paper, the detailed microscopic processes which occur during the hydrogen embrittlement of pure Nb are examined using in situ SEM crack propagation studies using electron diffraction and ion probe methods, and the results show that the fracture process occurs in a stress induced NbH hydride phase which forms in front of the propagating crack.
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Less Common Metals
TL;DR: A review of developments and improvements in process technology for fabricating beryllium, chromium, hafnium, molybdenum, niobium, rhenium, tantalum, tungsten, and zirconium is given in this paper.
Journal ArticleDOI
Thermodynamic properties in the systems vanadium--hydrogen, niobium-- hydrogen, and tantalum--hydrogen.
Journal ArticleDOI
Recording optical lever
R V Jones,J. C. S. Richards +1 more
TL;DR: In this paper, a small optical lever is described which can detect a change of 10-10 rad in orientation of a 2 mm2 mirror, with a response time of about 0.25 s.
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An electron-optical study of β-hydride and hydrogen embrittlement of vanadium
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