Hydrogen Interactions and Their Correlation to the Hydrogen Embrittlement Susceptibility of Al-Li-Cu-Zr Alloys PDF Download
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Author: Stephen W. Smith
Publisher:
ISBN:
Category :
Languages : en
Pages : 608
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Author: Stephen W. Smith
Publisher:
ISBN:
Category :
Languages : en
Pages : 608
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Book Description
Author: Anthony W. Thompson
Publisher: John Wiley & Sons
ISBN: 1118803272
Category : Technology & Engineering
Languages : en
Pages : 1090
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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.
Author:
Publisher:
ISBN:
Category : Metallurgy
Languages : en
Pages : 708
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Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 800
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Author: S. Jayalakshmi
Publisher:
ISBN:
Category : Amorphous alloys
Languages : en
Pages : 23
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Book Description
In hydrogen-related energy technologies, the selection of materials is critical since hydrogen can modify the initial microstructure and induce damage that could result in the reduction of mechanical properties and embrittlement. In this context, metallic amorphous alloys are viable candidates due to their high hydrogen solubility. Earlier studies demonstrated the positive interaction of hydrogen with amorphous alloys. However, similar to crystalline metals, embrittlement by hydrogen was also reported. In order to clarify the role of hydrogen in this class of alloys, we present an overview on the hydrogen interaction and embrittlement, encompassing results from published studies and from our own investigations on several Zr-, Ni-, and Ti-based amorphous alloy systems. The importance of the constituent elements and composition in determining the structure, hydrogenation kinetics, and hydrogen absorption capacity were brought out. The resistance to embrittlement varies upon the alloy system, constituent elements, and atomic packing of the amorphous alloy. In metalloid-free amorphous alloys, the bending ductility and tensile fracture strength of thin ribbons could be preserved up to a critical concentration beyond which hydrogen degradation occurs. The value of this critical concentration was found to vary from a few percent to about 45 at. % H. The mechanism of embrittlement induced by hydrogen was identified from the correlation of the observed changes in structural, thermal, and mechanical properties. It was found that hydrogen plays a prime role in altering the local atomic structure by reordering the nearest neighbor atomic configuration. The structural dilatation so produced was found to be the source of hydrogen-induced failure in these amorphous alloys. Also a "hydrogen concentration versus dilatation" map has been proposed, which would serve as a tool to predict the hydrogen-induced ductile-to-brittle transition in these alloys.
Author: Anthony W. Thompson
Publisher: John Wiley & Sons
ISBN: 1118803256
Category : Technology & Engineering
Languages : en
Pages : 1303
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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.
Author: Patrick J. Moran
Publisher:
ISBN:
Category : Absorption
Languages : en
Pages : 16
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Book Description
The influence of strain and strain rate on hydrogen entry, transport, and trapping in high-strength ferrous alloys and the subsequent effects on hydrogen embrittlement are being investigated in this research program. Most hydrogen permeation measurements reported in the literature presume surface absorption kinetics to be sufficiently fast as to not influence observed changes in the permeation flux. It is interesting that hydrogen recombination poisons (enhancing absorption) are frequently used to observe permeation currents. It is also interesting that environmental slow-strain-rate plastic loading and cyclic loading at low frequency, possibly enhancing either absorption or bulk diffusion of hydrogen, have been observed to increase tendencies towards hydrogen embrittlement. In the present investigation a series of slow-strain-rate measurements, electrochemical measurements to investigate adsorption-absorption kinetics and eventually a combination of these, are being performed and will be described. A discussion of electrochemical techniques being utilized for adsorption-absorption studies is included. It is anticipated that once this program is completed, the influence of plastic deformation on the hydrogen absorption and apparent hydrogen diffusion rate for a high-strength steel will be assessed. Once the effects of surface absorption and bulk diffusion are differentiated, the influence of each will be correlated with the degree of hydrogen-stimulated environmental damage observed for AISI 4340 steel in chloride environments.
Author: Alexander Robert Troiano
Publisher: ASM International
ISBN: 9781615031788
Category : Technology & Engineering
Languages : en
Pages : 356
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Author: M. F. Ashby
Publisher: Elsevier
ISBN: 1483191087
Category : Technology & Engineering
Languages : en
Pages : 773
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Book Description
Perspectives in Hydrogen in Metals: Collected Papers on the Effect of Hydrogen on the Properties of Metals and Alloys discusses the advancement in the understanding of the effects of hydrogen on the physical and mechanical properties of metals and alloys. The title first covers solubility and other thermodynamic properties, and then proceeds to tackling diffusivity. Next, the selection discusses the trapping of hydrogen by defects and hydride formation. The text also talks about hydrogen in amorphous metals, along with the effect of hydrogen on plastic deformation. The last chapter covers hydrogen embrittlement. The book will be of great use chemists, metallurgists, and materials engineers.
Author: Louis Raymond
Publisher: ASTM International
ISBN: 0803109598
Category : Metals
Languages : en
Pages : 429
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Book Description
