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Stress Induced Hydrogen Concentration In Titanium
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Book Synopsis Stress-Induced Hydrogen Concentration in Titanium by : Philip N. Adler
Download or read book Stress-Induced Hydrogen Concentration in Titanium written by Philip N. Adler and published by . This book was released on 1981 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: The changes in hydrogen concentration that accompany application of a stress-gradient were characterized in titanium alloys so that the influence of stress on hydrogen embrittlement can be understood. In situ measurement of hydrogen was made useing the nuclear microprobe for hydrogen (NMH). A nondestructive depth-profiling technique that utilizes the IH(7Li, gamma)8Be resonant nuclear reaction. Stress gradients were applied by four-point bending. Single phase alloys of beta-Ti and alpha-Ti, as well as different alpha/beta morphologies of Ti-6Al-4V alloy, were examined. Hydrogen redistribution was observed in all the beta-phase alloys under an elastic stress gradient, but no further change accompanied plastic deformation. The extent of hydrogen change in high-purity alloys was approximately two times greater than in commercial alloys. Based on this difference and measurements of the partial molal volume of hydrogen in selected alloys, it was concluded that a portion of hydrogen in the commercial alloys was not available for redistribution and was, therefore, trapped. Factors such as hydrogen content, oxygen content, and cold working were not found to change the extent of hydrogen trapping. The practical significance of trapping lies in its possible use to reduce the deleterious influence of hydrogen. The diffusion coefficient in these alloys was also determined under both elastic and plastic loadings and was found to be relatively uniform, approximately 1 time 10 to the minus 6 sq cm. per s, and consistent with those previously reported for beta-Ti.
Book Synopsis Hot-salt Stress-corrosion of Titanium Alloys by : Hugh R. Gray
Download or read book Hot-salt Stress-corrosion of Titanium Alloys written by Hugh R. Gray and published by . This book was released on 1969 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Role of Hydrogen in Hot-salt Stress-corrosion of a Titanium Alloy by : Hugh R. Gray
Download or read book Role of Hydrogen in Hot-salt Stress-corrosion of a Titanium Alloy written by Hugh R. Gray and published by . This book was released on 1971 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydrogen embrittlement during hot salt, stress corrosion of titanium alloys.
Book Synopsis Hydrogen Embrittlement in Two ?/??titanium Alloys Under Sustained and Fatigue Loadings by : Neville R. Moody
Download or read book Hydrogen Embrittlement in Two ?/??titanium Alloys Under Sustained and Fatigue Loadings written by Neville R. Moody and published by . This book was released on 1981 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Role of Hydrogen in Hot-salt Stress Corrosion Cracking of Titanium-aluminum Alloys by : R. S. Ondrejcin
Download or read book The Role of Hydrogen in Hot-salt Stress Corrosion Cracking of Titanium-aluminum Alloys written by R. S. Ondrejcin and published by . This book was released on 1971 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effect of Initial Hydrogen Content of a Titanium Alloy on Susceptibility to Hot-salt Stress-corrosion by : Hugh R. Gray
Download or read book Effect of Initial Hydrogen Content of a Titanium Alloy on Susceptibility to Hot-salt Stress-corrosion written by Hugh R. Gray and published by . This book was released on 1971 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effect of Hydrogen on Flow and Fracture in a Β-titanium Alloy by : Kumar V. Jatavallabhula
Download or read book Effect of Hydrogen on Flow and Fracture in a Β-titanium Alloy written by Kumar V. Jatavallabhula and published by . This book was released on 1981 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Report on Hydrogen in Titanium and Titanium Alloys by : Dean N. Williams
Download or read book Report on Hydrogen in Titanium and Titanium Alloys written by Dean N. Williams and published by . This book was released on 1958 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hydrogen-Related Degradation of Mechanical Properties of Titanium and Titanium Alloys by : Kenzo Asaoka
Download or read book Hydrogen-Related Degradation of Mechanical Properties of Titanium and Titanium Alloys written by Kenzo Asaoka and published by . This book was released on 2009 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydrogen can have a pronounced effect on the mechanical properties of titanium (Ti) and Ti alloys, such as deformation, fracture, and fatigue life. The delayed fracture of medical Ti alloy devices is commonly caused by hydrogen embrittlement. Experimentally, we confirmed that the degradation in the performance of Ni-Ti superelastic alloy is caused by the hydrogen absorption related with specific factors in vivo; i.e., hydrogen embrittlement is related to such factors as sustained stress, in vivo environment (pH and potential), and surface chemistry. In our research a thermal desorption gas spectrometer (TDS) was used to measure the hydrogen content in the alloys without fusion. The measured hydrogen concentration showed clearly that the hydrogen concentration affects considerably the degradation of the mechanical properties. It is unclear how the alloy can naturally absorb hydrogen under biological circumstances. However, it is suspected that the hydrogen absorption is related to galvanic currents, fretting corrosion, hydrogen ions in a biological fluid, and changes in pH under biostructures, biofilms, and tumors. It may lead to the degradation of their mechanical properties by hydrogen absorption in vivo. Also the processes of medical Ti alloy devices, such as pickling, are associated with their hydrogen content. Thus, the estimation of the hydrogen absorption in vivo in relation to surface features is required to evaluate its effect on such properties as fatigue and the service life of the Ni-Ti alloys used as medical devices.
Book Synopsis Hot-salt Stress-corrosion of Titanium Alloys by : Hugh R. Gray
Download or read book Hot-salt Stress-corrosion of Titanium Alloys written by Hugh R. Gray and published by . This book was released on 1969 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effect of Hydrogen Concentration on Embrittlement and Crack Growth of Selected Titanium Alloys by : Susan A. Kimball
Download or read book Effect of Hydrogen Concentration on Embrittlement and Crack Growth of Selected Titanium Alloys written by Susan A. Kimball and published by . This book was released on 1983 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Aqueous Chloride Stress Corrosion Cracking of Titanium: A Comparison with Environmental Hydrogen Embrittlement by :
Download or read book Aqueous Chloride Stress Corrosion Cracking of Titanium: A Comparison with Environmental Hydrogen Embrittlement written by and published by . This book was released on 1973 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Role of Hydrogen Chloride in Hot-salt Stress Corrosion Cracking of Titanium-aluminum Alloys by : R. S. Ondrejcin
Download or read book Role of Hydrogen Chloride in Hot-salt Stress Corrosion Cracking of Titanium-aluminum Alloys written by R. S. Ondrejcin and published by . This book was released on 1968 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1991 with total page 910 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hydrogen Embrittlement and Stress Corrosion Cracking of Titanium Alloys Caused by Cleaning Processes by : Society of Automotive Engineers, Inc
Download or read book Hydrogen Embrittlement and Stress Corrosion Cracking of Titanium Alloys Caused by Cleaning Processes written by Society of Automotive Engineers, Inc and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Tensile Properties of Titanium Electrolytically Charged with Hydrogen by : Robert J. Smith
Download or read book Tensile Properties of Titanium Electrolytically Charged with Hydrogen written by Robert J. Smith and published by . This book was released on 1971 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: Yield strength, ultimate tensile strength, and elongation were studied for annealed titanium electrolytically charged with hydrogen. The hydrogen was present as a surface hydride layer. These tensile properties were generally lower for uncharged titanium than for titanium with a continuous surface hydride; they were greater for uncharged titanium than for titanium with an assumed discontinuous surface hydride. We suggest that the interface between titanium and titanium hydride is weak. And the hydride does not necessarily impair strength and ductility of annealed titanium. The possibility that oxygen and/or nitrogen can embrittle titanium hydride is discussed.
Book Synopsis An Electrochemical Model for Hot-salt Stress-corrosion of Titanium Alloys by : Marvin Garfinkle
Download or read book An Electrochemical Model for Hot-salt Stress-corrosion of Titanium Alloys written by Marvin Garfinkle and published by . This book was released on 1972 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: An electrochemical model of hot-salt stress-corrosion cracking of titanium alloys is proposed based on an oxygen-concentration cell. Hydrogen embrittlement is proposed as the direct cause of cracking, the hydrogen being generated as the results of the hydrolysis of complex halides formed at the shielded anode of the electrochemical cell. The model found to be consistent with the diverse observations made both in this study and by many investigators in this field.
