Hot deformation behavior and microstructure evolution of 2707 hyper duplex stainless steel (HDSS) were investigated through hot compression tests in the temperature range of 900–1250 ◦C and strain rate range of 0.01–10 s−1. The results showed that the flow behavior strongly depended on strain rate and temperature, and flow stress increased with increasing strain rate and decreasing temperature....

The steel alloy of the current study contains 0.3% carbon with different amounts Cr, and Mo, in addition to W. Single simulation hits were designed as isothermal passes for compressive hot deformation up 0.5 true strain. Each pass was carried out at temperatures, 1050, 950, 850 750 oC, strain rates 0.1 1.0 sec-1. A numerical computational model is used formulation flow behavior specified condit...

The development of nuclear shapes under the extreme conditions of high angular momentum and/or temperature is examined. Scaling properties are used to demonstrate universal properties of both thermal expectation values of nuclear shapes as well as the minima of the free energy, which can be used to understand the Jacobi transition. A universal correlation between the width of the giant-dipole r...

In order to develop the high-temperature forging process of high-quality 20MnCr5(SH) gear steel, according physical characteristics hot deformation 20MnCr5(SH), single pass pressing test was carried out in temperature range 930–123 °C and strain rate 0.002–2 s?1 by using a Gleeble-1500D thermal simulator. The stress-strain curve analyzed confirmed microstructure analysis. dynamic recrystallizat...

Physical conditions in the atmospheres of tidally locked, slowly rotating hot Jupiters correspond to dynamical circulation regimes with Rhines scales and Rossby deformation radii comparable to the planetary radii. Consequently, the large spatial scales of moving atmospheric structures could generate significant photospheric variability. Here, we estimate the level of thermal infrared variabilit...

An investigation has been carried out into the microstructures developed during the early stages of equal channel angular extrusion (ECAE) in a polycrystalline single-phase Al-0.13Mg alloy, with emphasis on the substructural alignment with respect to the die geometry and the crystallographic slip systems, which is essentially related to the grain refinement and texture development during deform...

The present study has expounded the effect of high temperatures on tensile deformation AZ31 magnesium alloy processed through a single-pass friction stir processing (FSP). major operation parameters, namely rotation speed and traverse FSP tool, were varied which led to extensive dynamic recrystallization (DRX) in zone (SZ) engendering maximum grain refinement about 63% as compared base metal. l...

China is the world’s largest coal-producing country and mining-related land subsidence happens almost in every coal mining area. In north-west China, land subsidence in coal mining areas is mainly caused by underground mining activities and uncontrolled burnings of subsurface coal seam. As Hoffmann (2004) reported, burning coal-seams can result in extensive subsidence of several meters and typi...