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Examination of Ni-base superalloy diffusion couples containing multiphase regions
(2014-04-02)
Four Ni-base superalloy diffusion couples with multiphase regions were studied. The diffusion couples contained single-phase (gamma ), two phase( gamma +MC carbide) and three-phase ( gamma + gamma prime+MC carbide) ...
Al-Co-W 900C Phase Equilibria Data
(2014-09-03)
Phase equilibria at 900 °C in the Co-rich Co-Al-W ternary system are investigated through isothermal annealing of six alloy compositions for times up to 8000 h. The volume fraction of the L12-γ′ phase co-existing with ...
Measurement of Equilibrium Concentrations of Vacancies in Copper
(2014-07-02)
The net added fraction of thermally-generated atomic sites, ΔNN, has been measured, during equilibrium heating to near the melting point, in a coarse-grained copper bar of 99.999% purity. The linear thermal expansion, ΔLL, ...
Annealing Kinetics of Voids and the Self-Diffusion Coefficient in Aluminum
(2014-01-20)
The annealing kinetics of voids in 99.9999 wt% pure aluminum were studied over the temperature range 85 to 209 °C in thin specimens by transmission electron microscopy. The isothermal shrinkage of individual voids was ...
Al Self-diffusion, Messer et al. 1974
(2014-01-19)
Self-diffusion in aluminum at low temperatures
(2014-01-20)
Values of the self-diffusivity of pure aluminum in the temperature range 130∮ to 200° have been determined by measuring the rate of annealing of prismatic and faulted dislocation loops in thin foils of quenched 99.999 pct ...
Al Self-diffusion, Beyeler 1968
(2014-01-19)
Self-diffusion of gold, copper and aluminium has been investigated for single crystals treated under pressures of 0 to 10 kbars in a temperature range of 700 °C to 990 °C for copper and gold and 400-610 °C for aluminium. ...
Study of Si self-diffusion by nuclear techniques
(2014-02-10)
By using ion implantation for preparation and p, γ-reactions for analysis of 30Si profiles the Si self-diffusion has been studied in the temperature range of 830–1200°C. The results reveal unambiguously that the diffusion ...
Phase equilibria and thermodynamic calculation of the CoeTa binary system
(2014-09-29)
Experimental investigation and thermodynamic evaluation of the CoeTa binary phase diagram was carried out. Equilibrium compositions obtained in two-phase alloys and diffusion couples were measured by electron probe ...