Results 81 to 90 of about 296,576 (380)
From quantum mechanics to the physical metallurgy of steels [PDF]
arXiv, 2013 In the last decade there has been a breakthrough in the construction of theories leading to models for the simulation of atomic scale processes in steel. In this paper the theory is described and developed and used to demonstrate calculations of the diffusivity and trapping of hydrogen in iron and the structures of carbon vacancy complexes in steel.
arxiv
Failure behaviors and processing maps with failure domains for hot compression of a powder metallurgy Ni-based superalloy [PDF]
arXiv, 2022 Processing maps are key to guiding the thermo-mechanical processing (TMP) of superalloys. However, traditional processing maps are incapable of delimiting failure, which is an essential factor to be concerned about during the TMP of superalloys. Employing isothermal hot compression experiments and finite element analysis (FEA), the present study ...
arxiv
Advanced Engineering Materials, EarlyView.Refractory high‐entropy alloys have attracted substantial attention for future ultrahigh‐temperature structural applications. Here the progression of key phase transformations in AlMo0.5NbTa0.5TiZr is established and correlated to the mechanical performance, highlighting the importance of the B2 phase.
George J. Wise +5 more
wiley +1 more source
Metallurgy in the Early Steppes [PDF]
Artibus Asiae, 1970 In Europe copper appeared in the middle of the third millennium B.c. in the framework of a developed technology in two marginal regions, in Spain and Portugal and on the shores of the Aegean. From both centers ready-made implements were exported over large areas mostly by sea trade.
openaire +5 more sources
Ultralight reactive metal foams produced as structural shapes in space: System design [PDF]
, 1984 This autonomous experiment for foaming metals in space involved: (1) payload support structure; (2) furnace and foaming apparatus; (3) electronic controls; (4) battery power; and (5) metallurgy.
Cocks, F. H. +2 more
core +1 more source
Deformation Behavior of La2O3‐Doped Copper during Equal Channel Angular Pressing
Advanced Engineering Materials, EarlyView.By additions of strengthening elements and/or structure optimization, the mechanical properties of copper can be increased while keeping favorable electric conductivity. By combining addition of La2O3 and processing by equal channel angular pressing, substructure development is achieved, leading to increase in microhardness to more than double the ...
Lenka Kunčická +2 more
wiley +1 more source
Boletín del Museo Chileno de Arte Precolombino, 2010 En este artículo presentamos una máscara del noroeste de Argentina que es uno de los objetos de cobre más antiguos de la región andina. Damos a conocer sus particulares condiciones de hallazgo y los fechados radiocarbónicos asociados.
M. Cristina Scattolin +4 more
doaj
The Success Story of Gold-Based Catalysts for Gas- and Liquid-Phase Reactions: A Brief Perspective and Beyond [PDF]
, 2019 Gold has long held the fascination of mankind. For millennia it has found use in art, cosmetic metallurgy and architecture; this element is seen as the ultimate statement of prosperity and beauty.
Ivanova, Svetlana +4 more
core +1 more source
Direct Consolidation of Copper–Graphene Composite by Rotary Swaging
Advanced Engineering Materials, EarlyView.The applicability of the rotary swaging method for preparation of electroconductive copper–graphene composite by direct consolidation of powders is proven. The consolidated material features advantageous microstructure featuring fine grains and twins, with homogeneous distribution of graphene, primarily along the twin boundaries, which contribute to ...
Radim Kocich +2 more
wiley +1 more source