Shape memory alloys have again appealed a lot in recent years as new special materials of unusual macroscopic features that make them interesting for study and research as well as for their multifunctional application in various branches of techniques. Shape memory refers to the ability of certain plastic metals and alloys to regain their original shape during the heating process due to complet...

A systematic study of the resistivity (p), the Hall coefficients (R~), and the magnetic susceptibilities (y) of the Zr-based paramagnetic amorphous alloys suggests a self-consistent explanation for the frequently observed positive values of RH that is based on the side-jump effect. Measurements for g, RH, and p of (Zr064CuQ 36)& Al and g for (Zr05oNi050)& „Al alloys are presented. The odd behav...

Tarnishing, corrosion and stress corrosion cracking (SeC) of gold alloys are related phenomena. They present problems when they occur in gold jewellery, dental gold alloys and electronic devices. They are exploited, however, in the depletion gilding and finishing of gold jewellery; and in the extraction, refining and fire assaying of gold. There is still much that is not known about these pheno...

Shape memory alloys have attracted much attention due to their attractive properties for applications as well as their basic aspects of deformation and transformation in structural and magnetic behavior. In 1951, the Au–Cd alloy was discovered [1]. After that, numberless shape memory alloys have been developed. A lot of applications of shape memory alloys were realized after the Ti–Ni alloy was...

Detailed studies of the temperature dependence of the spontaneous magnetization have been made in eight different compositions of g-Ni1002x2yFexVy ~4<x<17; 2<y<18! alloys at a magnetic field of 30 kOe between 4.2 and 50 K. The values of the Curie temperature (TC) and the saturation magnetization (M 0) are found to decrease with the increase of V. This is understood since the addition of V ~whic...

Magnetic field annealing can be used to induce uniaxial magnetic anisotropy in ferromagnetic alloys, which is often desirable, for example, to reduce core losses in materials of interest for high frequency inductive components in power conversion applications. An understanding of the compositional dependence of the uniaxial induced anisotropy constant KU is important to develop materials for su...

Aluminum alloys show a low weight, relatively high specific strength, good corrosion resistance in neutral environments and high electric and thermal conductivity. It makes them of interest for production of various functional components in aerospace and automotive industry. Wrought alloys generally have good formability and they are processed by common technologies, such as extrusion, forging,...

Shape memory alloys provide new insights for the design of biomaterials in bioengineering for the design of artificial organs and advanced surgical instruments, since they have specific characteristics and unusual properties. This article will examine (a) the four properties of shape memory alloys, (b) medical applications with high potential for improving the present and future quality of life...

Effects of ultra high magnetic field of both pulse and steady types on martensitic transformation have been studied, using Fe-Ni-Mn, Fe-Ni-Mn-C alloys with the supplemental tests on Fe-Ni-C and Fe-NiCo-Ti alloys. It is found that the martensitic transformation is induced at room temperature not only athermally but also isothermally either by pulse magnetic field or by steady magnetic field for ...