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: Capability of a novel severe plastic deformation (SPD) method of hydrostatic cyclic extrusion compression (HCEC) for processing of hcp metallic rods with high length to diameter ratios... of the microhardness after the second cycle was uniform and its average value was increased by 116%. The potentials derived from the polarization curves were high and the currents were much low for the processed......
of the characteristics commonly presented by Al-based alloys are high specific strength, even at high temperatures, excellent stiffness, high wear and corrosion resistances, good electrical/thermal conductivities...-Cu binary system is the basis of important cast commercial alloys as AA2014, AA2024, AA2099 and AA2219 [2]. The AA2219 alloy, which presents good weldability, high specific strength and heat......
and transfer number of aluminate ions in aluminate solution at high concentration 2.2 分解过程铝酸根阴离子的行为 2.2.1 分解过程铝酸根阴离子的行为 孙素琴等[69]用近红外傅立叶变化拉曼光谱仪原位跟踪了铝酸钠溶液碳酸化过程,发现代表离子的625 cm-1处的拉曼光谱峰在通入CO2分解过程中... solutions (Ⅱ)[M]. Washington DC: American Chemical Society, 1990: 414-428. [6] POKROVSKII V A, HELGESON H G. Thermodynamic properties of aqueous species and the solubilities of minerals at high pressures......
in aerospace, military and structural industries due to superior mechanical properties. In these high strength 7xxx aluminium alloys, SCC plays a vital factor of consideration, as these failures... in the region of the stress raiser such as crack. The stress concentration at the crack tip produces high localized stresses that surpass the yield strength of the metal in the section neighboring the crack......
