Author: Joseph Clifton LewisPublisher:
ISBN:
Category : Titanium alloys
Languages : en
Pages : 126
Book Description
Effect of Hydrogen on Fracture of Titanium
Author: Joseph Clifton LewisPublisher:
ISBN:
Category : Titanium alloys
Languages : en
Pages : 126
Book Description
Effect of Hydrogen on Flow and Fracture in a Β-titanium Alloy
Author: Kumar V. JatavallabhulaPublisher:
ISBN:
Category :
Languages : en
Pages : 388
Book Description
Hydrogen Embrittlement in Two ?/??titanium Alloys Under Sustained and Fatigue Loadings
Author: Neville R. MoodyHot-salt Stress-corrosion of Titanium Alloys
Author: Hugh R. GrayPublisher:
ISBN:
Category : Gas-turbines
Languages : en
Pages : 26
Book Description
Hydrogen Effects in Materials
Author: Anthony W. ThompsonPublisher: John Wiley & Sons
ISBN: 1118803272
Category : Technology & Engineering
Languages : en
Pages : 1090
Book Description
Proceedings of the Fifth International Conference on the Effect of Hydrogen on the Behavior of Materials sponsored by the Structural Materials Division (SMD) Mechanical Metallurgy and Corrosion & Environmental Effects Committees of The Minerals, Metals & Materials Society held at Jackson Lake Lodge, Moran, Wyoming, September 11-14, 1994.
The Effect of Hydrogen on the Fracture Toughness of the Titanium Alloys Ti6A14V and Ti5A12.5Sn Before and After Neutron Irradiation
Author: The Role of Hydrogen in Hot-salt Stress Corrosion Cracking of Titanium-aluminum Alloys
Author: R. S. OndrejcinPublisher:
ISBN:
Category : Hydrogen
Languages : en
Pages : 28
Book Description
Maco/Micro Studies of Hydrogen Embrittlement Mechanisms in Titanium and Aluminum Alloys
Author: W. W. GerberichPublisher:
ISBN:
Category : Alloys
Languages : en
Pages : 25
Book Description
Systematic studies of environmental effects on fracture in two alpha/beta titanium alloys, one beta titanium alloy and 7475 aluminum alloys have been accomplished. Ti-6Al-6V-2Sn has been tested for its hydrogen-induced cracking behavior under sustained loads. The influence of frequency and microstructure on fatigue crack growth have also been studied. Fatigue crack growth in Ti-5A1-4Mo, as a function of hydrogen content, temperature and Widmanstatten colony size, was then studied. Mechanical data have been obtained along with TEM and SEM characterizations. Modelling for fatigue thresholds has been attempted to explain dislocation, microstructure and hydrogen effects. Ti-30 Mo has been studied for effects of hydrogen on dislocation dynamics, cleavage fracture stress and fatigue crack propagation. Fractography (SEM) has been used to characterize the fracturing processes and modeling attempted to explain the hydrogen effects. Hydrogen effects in aluminum alloys are not as obvious as those in titanium alloys. Both cathodic and gas-phase charging did not significantly increase the hydrogen content of this material. Mechanical properties did not seem to change decisively after hydrogen charging. But the lack of a macroscopic effect does not preclude a hydrogen mechanism in environmentally assisted events. (Author).
Hydrogen Damage
Author: Cedric D. BeachemPublisher: ASM International(OH)
ISBN:
Category : Science
Languages : en
Pages : 432
Book Description
The Influence of Hydrogen on the Multiaxial Fracture Behavior of Titanium Alloy Sheets
Author: B. J. LograssoPublisher:
ISBN:
Category :
Languages : en
Pages : 10
Book Description
The influence of hydrogen on the deformation and fracture of three Ti alloys in the form of sheet has been examined as a function of the state of stress. Unnotched sheet specimens of alpha-phase Ti ( -60, 630, and 980 ppm H), Beta-phase Ti-30V ( -40 and 2000 ppm H), and alpha-Beta Ti-6Al-4V (30, 240, and 500 ppm H) have been investigated over deformation paths ranging from uniaxial to equibiaxial tension. Based on the measurements of the local fracture strains, the alpha-Ti data show a decrease in ductility with increasing hydrogen content as the degree of biaxiality of the tensile strain increases. Thus hydrogen embrittlement of Ti sheet is most severe under equibiaxial straining. In contrast, there is no pronounced effect of stress state on the localized necking and fracture behavior of either the Ti-30V or the Ti-6Al-4V at any of the hydrogen levels/microstructures examined. The results indicate that, even in equibiaxial tension, Ti alloys in the form of sheet are immune to hydrogen embrittlement if hydrides do not form. If hydrides are present, the embrittlement is most pronounced under those state of stress (e.g., plane strain and equibiaxial tension) which are characterized by large normal stresses.