Listar por tema "Grain boundaries"
Mostrando ítems 1-8 de 8
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Fatigue failure investigation of pre-corroded and laser-welded Al-Cu-Mg-Ag Alloy with different temper condition
(2010)The fatigue failure mechanisms of pre-corroded, laser beam welded Al-Cu-Mg-Ag alloy in different temper conditions (T3,T8) have been investigated. Aging influences the corrosion behavior of laser welds. In the T3 temper, ... -
Grain and grain boundary transport in BaCe0.5Zr0.3Ln0.2O3−Δ (Ln – Y or lanthanide) electrolytes attractive for protonic ceramic fuel cells application
(2017)Protonic ceramic fuel cells (PCFCs) belong to very attractive energy conversion systems, which are able to operate effectively at low- and intermediate temperature ranges. The improvement of their electrochemical characteristics ... -
Influence of nano-inclusions' grain boundaries on crack propagation modes in materials
(2011)The effect of nano-inclusions on materials strength and toughness has attracted great interest in recent years. It has been shown that tuning the morphological and microstructural features of materials can tailor their ... -
Mechanics models for hydrogen embrittlement mechanisms
(2005)Of the many suggestions of hydrogen-induced degradation of engineering materials, two mechanisms appear to be viable in non-hydride forming systems: hydrogen-enhanced localized plasticity (HELP) and hydrogeninduced decohesion. ... -
Phase-Field Modeling of Nugget Zone for a AZ31-Mg-Alloy Friction Stir Weld
(2018)This work presents simulation of microstructure evolution in the nugget zone (NZ) of a AZ31-Mg-alloy friction stir weld. The process parameters (tool geometrical characteristics, rotational speed, travel speed, applied ... -
Stress-corrosion cracking of a Monel 400 tube
(2004)A bent Ni-Cu Monel 400 alloy tube, which operated as part of a pipeline in a petrochemical distillery installation, failed by through-thickness cracking. The pipeline was used to carry a stream of gaseous hydrocarbons ... -
Transport properties of highly dense proton-conducting BaCe0.8–xZrxDy0.2O3–δ materials in low- and high-temperature ranges
(2018)Proton-conducting materials constitute a class of oxide compounds possessing the required properties for application as electrolytes for low- and intermediate temperature solid oxide cells. In the present investigation, ... -
Vacancy effect on the elastic constants of layer-structured nanomaterials
(2009)Layer-structured nanomaterials where alternating layers of nanocrystallites meet along high angle grain boundaries constitute a special category of nanomaterials. In the present study we investigated the effect of the ...