Microstructural evolution in Al–Mn–Cu–(Be) alloys

Microstructural Evolution and Phase Formation in 2nd-Generation Refractory-Based High Entropy Alloys

Refractory-based high entropy alloys (HEAs) of the 2nd-generation type are new intensively-studied materials with a high potential for structural high-temperature applications. This paper presents investigation results on microstructural evolution and phase formation in as-cast and subsequently heat-treated HEAs at various temperature-time regimes. Microstructural examination was performed by m...

Part I. The Microstructural Evolution in Ti-Al-Nb O 1 Bcc Orthorhombic Alloys

Phase transformations and the resulting microstructural evolution of near-Ti2AlNb and Ti-12Al38Nb O 1 bcc orthorhombic alloys were investigated. For the near-Ti2AlNb alloys, the processing temperatures were below the bcc transus, while, for Ti-12Al-38Nb, the processing temperature was supertransus. Phase evolution studies showed that these alloys contain several constituent phases, namely, bcc,...

Microstructural Evolution in OrthotropicElastic Media

We consider the problem of microstructural evolution in binary alloys in two dimensions. The microstructure consists of arbitrarily shaped precipitates embedded in a matrix. Both the precipitates and the matrix are taken to be elastically anisotropic, with different elastic constants. The interfacial energy at the precipitate– matrix interfaces is also taken to be anisotropic. This is an extens...

MICROSTRUCTURAL EVOLUTION AND MECHANICAL PROPERTIES OF Zn-Ti ALLOYS FOR BIODEGRADABLE STENT APPLICATIONS

Microstructural Evolution of X45CrNiW189 Valve Steel During Hot Deformation

The hot compression tests were carried on X45CrNiW189 valve steel (X45) in the temperature range of 1000– 1200 °C and the strain rate range of 0.004 – 0.5 s-1 in order to study the high temperature softening behavior of this steel. For the exact prediction of flow stress, the effective stress-effective strain curves were obtained from experiments under various conditions. On the basis of experi...