منابع مشابه
Microstructure of Al-Zn and Zn-Al Alloys*
The change of microstructure of the title alloys with concentration, temperature and applied thermal treatment was studied in situ by XRD. The alloys, having the Zn atomic fraction, x(Zn), from 0.03 to 0.62, were subjected to: (i) rapid quenching from a temperature, Tt, higher than the solid-solution temperature, Tss, in water at RT (samples WQ); (ii) slow cooling from Tt to RT (samples SC). Th...
متن کاملQuench Rate Effects on the Natural Aging Behavior of 7xxx Al-mg-zn-cu Aluminum Alloys
The effect of quench rate on the natural aging behavior was examined using microhardness, conductivity and the differential scanning calorimeter. The data indicated that GPZ formed during extended natural aging of 7075, while extended aging of 7050 resulted in the precipitation of η’. Introduction The aluminum alloy system Al-Zn-Mg-Cu is the mainstay of aluminum alloys used in the aerospace ind...
متن کاملGrowth directions in directionally solidified Al–Zn and Zn–Al alloys near eutectic composition
Growth directions and crystallographic orientations of solidification microstructures have been measured in Al–Zn alloy near the eutectic composition. Al dendrites in Al–92 wt.% Zn alloy were found to grow along the h110i directions while Zn dendrites in Al– 96 and 98 wt.% Zn have h10 10i trunks. In the lamellar eutectic, a crystallographic relationship has been found between the dense plane of...
متن کاملOn Some Ternary Phases in the Systems Nb-Zn-Al and Ta-Zn-Al
Aluminium, Niobium, Tantalum, Zinc, Alloy In the systems NbZi^-aALr and TaZn2_^Alz a great number of samples was prepared and investigated by means of X-ray powder diffraction. In both systems at the equiatomic composition two new ternary phases were found. Their crystal structures were determined and found to belong to the Friauf-Laves type (MgZm prototype, S. G. P 63/mmc). The unit cell param...
متن کاملAN AES INVESTIGATION OF ALUMINUM, Al OXIDE AND Al NITRIDE
The aluminum-L,,VV Auger spectra for elemental Al. Al oxide and Al nitride have been measured in an assessment of the utility of Auger spectroscopy in characterizing thin oxidized Al films used in model supported-metal catalyst studies. Clearly distinct spectra were found for the three surface chemical states. The oxide spectrum was shown to be similar to published spectra from bulk, single-cry...
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ژورنال
عنوان ژورنال: Journal of Phase Equilibria and Diffusion
سال: 2010
ISSN: 1547-7037,1863-7345
DOI: 10.1007/s11669-010-9776-7