The literature about alloys of the Cu-Al system is extensive, due to its practical use. These alloys are of low cost and present good strength and hardness, depending on the Al content. They are used for making sleeves, guides, seats, flanges, gear wheels and many other critical small parts, as electrolysis cell cathodes, circuit plates and casting moulds when high thermal conductivity is neede...

A strategy for accelerated discovery and exploration of multi principal element alloys was developed and used to identify new alloys within a design window of desired microstructures and properties. As an example, the strategy was applied to analyze thousands of 3 4 , 5 and 6 component alloys at equia tomic compositions of the alloying elements. Currently available thermodynamic databases were ...

Measurements are reported of the increase in speci"c resistance, A*R, with increasing Co 91 Fe 9 layer thickness in current-perpendicular to the plane (CPP) exchange-biased spin-valves (EBSVs) of Co 91 Fe 9 and Cu. Analysis of these measurements yields a spin anisotropy parameter for Co 91 Fe 9 of b"0.65$0.05, and a spin di!usion length of lC0F% 4& "12$1 nm. The value of b agrees reasonably wel...

The effects of Be additions on the oxidation behavior of ~-NiAl in moist air at 1000°C and borderline alumina-forming y (TiAI) + Laves Ti-Al-Cr based alloys at 800°C and 1000°C in dry and moist air were investigated. The addition of Be to ~-NiAl suppressed the formation of transient alumina, and resulted in the formation of a protective BeAl20 4 spinel phase. In dry air, the addition of Be to t...

Stabilization of martensite and two way shape memory effect (TWSME) was studied in Cu-Ai-Mn alloys containing 9.7-11.8 wt% Al, and 3.0-9.25 wt% Mn, which were quenched to various temperatures. The transforming temperatures were in the range -70 to +220°C. The majority of alloys quenched directly to martensite did not show reverse transformation on heating due to stabilization and further temper...

4 Super symmetric quantum field theories 32 4.1 Super manifolds . . . . . . . . . . . . . . . . . . . . . . . . . . 32 4.2 Super Riemannian structures on 1|1-manifolds . . . . . . . . . 36 4.3 Super Riemannian structures on 2|1-manifolds . . . . . . . . . 40 4.4 The super bordism category RB . . . . . . . . . . . . . . . . 46 4.5 Extending TV to a super category . . . . . . . . . . . . . . . . ...

Formation of bulk metallic glass in quaternary Ti-Zr-Cu-Ni alloys by relatively slow cooling from the melt is reported. Thick strips of metallic glass were obtained by the method of metal mold casting. The glass forming ability of the quaternary alloys exceeds that of binary or ternary alloys containing the same elements due to the complexity of the system. The best glass forming alloys such as...

The establishment of reliable correlations between the extend of damage and a sensor response using automated non destructive testing (structural health monitoring) is the first aim of the present paper. The second and its main aim is the estimation of the efficiency of different approaches of the fatigue crack prediction when scalar parameters are used to represent the signal-response. Investi...

In statistical planning of experiments, super-simple designs are the ones providing samples with maximum intersection as small as possible. Super-simple designs are also useful in other constructions, such as superimposed codes and perfect hash families etc. The existence of super-simple (v, 4, λ)-BIBDs have been determined for λ = 2, 3, 4 and 6. When λ = 5, the necessary conditions of such a d...