منابع مشابه
Prevention of Hydrogen Embrittlement in Steels
The essential facts about the nature of the hydrogen embrittlement of steels have now been known for 140 years. It is diffusible hydrogen that is harmful to the toughness of iron. It follows, therefore, that the harmful influence of diffusible hydrogen can be mitigated by preventing its entry into steel or by rendering it immobile once it penetrates the material. This review deals with the meth...
متن کاملHydrogen bond assisted activation of a dinitrile towards nucleophilic attack.
The possibility of tunable regioselective activation of a dinitrile towards nucleophilic attack was demonstrated. For that, a sulfo-arylhydrazone unit was introduced into malononitrile and the thus formed intramolecular hydrogen bond systems assisted specific nucleophilic attacks to the cyano moieties leading to a variety of amidines, carboxamides and iminoesters depending on the nucleophiles a...
متن کاملLiterature Survey of Gaseous Hydrogen Effects on the Mechanical Properties of Carbon and Low Alloy Steels
Literature survey has been performed for a compendium of mechanical properties of carbon and low alloy steels following hydrogen exposure. The property sets include yield strength, ultimate tensile strength, uniform elongation, reduction of area, threshold stress intensity factor, fracture toughness, and fatigue crack growth. These properties are drawn from literature sources under a variety of...
متن کاملRetention and release behaviors of plasma-loaded hydrogen in ferritic steels
In order to understand retention and release behaviors of plasma-loaded hydrogen in ferritic steels, hydrogen depth profiles were examined by means of a tritium imaging plate technique (TIPT). Hydrogen release was strongly affected by trapping effect in bulk and/or barrier effect of surface oxide layers during long term storage in air at room temperature (RT) and even heating in vacuum. Helium ...
متن کاملHydrogen embrittlement of ferritic steels: Observations on deformation microstructure, nanoscale dimples and failure by nanovoiding
While hydrogen embrittlement of ferritic steels has been a subject of significant research, one of the major challenges in tackling hydrogen embrittlement is that the mechanism of embrittlement is not fully resolved. This paper reports new observations and interpretation of fracture surface features and deformation microstructures underneath the fracture surface, providing a mechanistic view of...
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ژورنال
عنوان ژورنال: Tetsu-to-Hagane
سال: 1985
ISSN: 0021-1575,1883-2954
DOI: 10.2355/tetsutohagane1955.71.9_1070