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. After that, the grains would be gradually elongated into slender fibrous structure (Fig. 7(d)) in the deformation zone due to the deformation along rolling direction (RD). Thus, narrow and elongated... is 20:5:1. It can be seen that the grains of as-cast Cu show long fibrous structure due to the rolling deformation along the rolling direction. Fig. 7 Macrostructure of cast-rolling area......
cost of chemical reagents and low grade of concentrates [15]. The sulphidizing flotation, which is realized by adding sulfurizing agents during flotation, can change the surface structure of copper..., the bending vibration peaks are at 875 cm-1 and 743 cm-1. Owing to the complex structure of malachite, Cu-(O, OH) presents two different coordination polyhedrons, with the stretching vibration peak of Cu-O......
of clinkers are similar to those of quartz and cristobalite. The quartz-type structure was defined as quartz solid solution [20] for the entrance of Fe2+ into the open spaces of silicon oxygen tetrahedra caused by replacement of Si4+ by Al3+ to render the structure electrically neutral, while the cristobalite-type structure can be similarly defined as cristobalite solid solution. In addition, both......
, but some components in an structure cannot be reinforced in unloaded conditions. Studies on beams with a secondary load that are reinforced via other methods have progressed further. ZHAO [14... not only destroys the concrete structure but also increases the corrosion of the steel bar. Therefore, the overall performance of the concrete beam decreases. However, because of the stress lag......
the dissolution of cancrinite, calcite and grossular seemed not to influence the IEP. The two mineral acids didn’t transform the chemical speciation of Na (Na is in a tetrahedral structure surrounded... dissolved into solution phase (Eqs. (5) and (6)). Citric acid didn’t transform the chemical speciation of Na (tetrahedral Na structure) [1]. The dissolution of calcite and grossular and neo-formation of Al(OH......
evolution. According to the previous studies, the strength-structure relationship can mainly be expressed by two strengthening mechanisms: dislocation strengthening and grain boundary strengthening.... [19] WU Xiao-lei, YANG Mu-xin, YUAN Fu-ping, WU Gui-lin, WEI Yu-jie, HUANG Xiao-xu, ZHU Yun-tian. Heterogeneous lamella structure unites ultrafine-grain strength with coarse-grain ductility [J......
alloy with long period stacking ordered structure for biomedical application[J]. Corrosion Science, 2014, 88: 1-5. [16] ZHANG X, WU Y, XUE Y, WANG Z, YANG L. Biocorrosion behavior and cytotoxicity of a Mg-Gd-Zn-Zr alloy with long period stacking ordered structure[J]. Materials Letters, 2012, 86: 42-45. [17] YANG L, HUANG Y, FEYERABEND F, WILLUMEIT R, MENDIS C, KAINER K U, HORT N. Microstructure......
Chemistry C, 2011, 115(27): 13107-13134. [6] GALE J D, ROHL A L, MILMAN V, WARREN M C. An ab initio study of the structure and properties of aluminum hydroxide: gibbsite and bayerite[J]. The Journal... solutions.Ⅱ. Role of temperature[J]. Journal of Colloid and Interface Science, 1984, 102(1): 260-277. [27] SIPOS P. The structure of Al(Ⅲ) in strongly alkaline aluminate solutions-A review[J]. Journal......
words: arc-assisted laser welding-brazing (A-LWB); Al/steel; finite element method (FEM); temperature field; residual stress; welding distortion 1 Introduction The Al/steel composite structure has..., the interface layer structure and mechanical properties of the joint have been analyzed; however, the existing researches cannot reflect the residual stress and welding distortion production mechanisms of Al......
strengthened phase in the Cu-Ag alloy can usually be deformed by cold drawing, so that the Ag fibrosis on the Cu matrix can be transformed into a biphasic fiber composite structure. The tensile strength... the microstructures and properties of Cu/Ag (Invar) composites fabricated by powder metallurgy. It was shown that the heterogeneity of the dislocation structure was mainly caused by the development......