DSpace at My University: Recent submissions
Now showing items 281-300 of 445
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Lattice Parameters, Densities, Expansion Coefficients and Perfection of Structure of Cu and Cu-In alpha Phase
(1969-04-08)Spectroscopically pure Cu has a lattice parameter a25 = 3.61491 Å (corrected for refraction), and a thermal expansion coefficient [alpha] = 14.87 × 10-6°C-1 between 15 and 55°C. The measured density d25 is 8.9314 ± 0.0002 ... -
Thermal Dilation of Copper
(1950-01-07)The prediction that certain cubic metals may not be precisely cubic throughout a range of temperature below their melting points led to the present investigation. Pure copper was chosen as the cubic metal to examine for ... -
The Thermal Expansion of Pure Metals: Copper, Gold, Aluminum, Nickel, and Iron
(1941-08-08)Extremely accurate determinations of the linear thermal expansions have been made interferometrically from — 196°C to temperatures about +400°C for Al and +700°C for Fe, Ni, Cu and Au. The relationship between true thermal ... -
3-Dimensional Reconstructions of Porosity from Laser-Welds of 304L Stainless Steel at 600W and a Variety of Travel Speeds
(2014-04-04)Porosity in linear autogenous laser welds of 304 L stainless steel has been investigated using micro-computed tomography to reveal defect content in 54 welds made with varying delivered power, travel speed and focal lens. ... -
Additional properties of Aluminum Alloy 6061
(2014-04-03)Spreadsheet with typical and minimum properties of wrought Al alloy 6061. Included fatigue, fracture and creep properties. -
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) ... -
ZrSiO4-HfSiO4
(2013-05-09)ZrSiO4 and HfSiO4 are of considerable interest because of their low thermal expansions, thermal conductivities, and the optical properties of HfSiO4. In addition, silicate phases of both are studied as model radioactive ... -
Tracer Diffusion of Magnesium in Aluminum Single Crystals
(2014-02-16) -
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 ... -
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 ... -
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, Messer et al. 1974
(2014-01-19) -
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. ... -
Crystallographic Texture Evolution in 1008 Steel Sheet During Multi-axial Tensile Strain Paths
(2013-12-30)This paper considers the crystallographic texture evolution in a 1008 low carbon steel. The texture evolution along uniaxial, plane strain and balanced biaxial strain states were measured. For uniaxial testing, grains tend ... -
Enhancement of strength and superplasticity in a 6061 Al alloy processed by equal-channel-angular-pressing
(2013-12-03)Pre-equal-channel-angular-pressing (ECAP) solution treatment combined with post-ECAP aging treatment has been found to be effective in enhancing the room-temperature strength of 6061 aluminum alloy. The largest increase ... -
Aluminum-Magnesium-Silicon Ternary Alloy Phase Diagram
(2013-12-03)Ternary isothermal diagram ( 427°C), crystal data, melting points. -
Forging of Discontinuously Reinforced Aluminum Composites
(2013-12-03)DISCONTINUOUSLY REINFORCED aluminum (DRA) alloy metal-matrix composites (MMCs) represent an advanced aluminum materials concept whereby ceramic particles, or whiskers, are added to aluminum-base alloys through the use of ... -
Friction and Wear of Aluminum-Silicon Alloy
(2013-12-03)ALUMINUM-SILICON ALLOYS are noted for their unique combination of desirable characteristics, including excellent castability and low density combined with good mechanical properties. One reference to 6061. -
Forging of Aluminum Alloys
(2013-12-03)ALUMINUM ALLOYS are forged into a variety of shapes and types of forgings with a broad range of final part forging design criteria based on the intended application. Aluminum alloy forgings, particularly closed-die forgings, ... -
Anodizing
(2013-12-03)IN GENERAL, anodizing refers to conversion coating of the surface of aluminum and its alloys to porous aluminum oxide. The process derives its name from the fact that the aluminum part to be coated becomes the anode in an ...