Reducing pollutant emissions and improving safety standards are primary targets for modern mobility improvement. To meet these needs, the development of low-density steels containing aluminum is a new frontier research automotive applications. Low-density Fe-Mn-Al-C alloys promising. In this regard, an alloy with high content niobium addition belonging to system was evaluated understand possibl...

In this study, isothermal compression tests of TB18 titanium alloy were conducted using a Gleeble 3800 thermomechanical simulator for temperatures ranging from 650 to 880 °C and strain rates 0.001 10 s−1, with constant height reduction 60%, investigate the dynamic softening mechanisms hot workability alloy. The results showed that flow stress significantly decreased an increasing deformation te...

On a Gleeble-3800 simulator, isothermal hot compression tests of an as-cast N06625 nickel-based alloy were conducted in wide range temperatures (950–1200 °C) and strain rates (0.1–50 s–1). Considering the influence friction adiabatic heating test, flow curves corrected. A modified Johnson-Cook, strain-compensated Arrhenius-type Hensel-Spittel constitutive models established based on corrected c...

A study of deformation behavior LZ50 axle steel has great significance to the railway industry. Hot-deformation tests were performed using a Gleeble-3800 thermal mechanical simulator at temperatures (900, 1000 and 1100) °C with strain rates (0.1, 1.0 10.0) s–1 under different degrees 0.2, 0.6 1.0. True stress-strain curves discussed obtain hot-processing maps. Then maps parameters including saf...

Accurate determination of the materials’ strength and ductility in semi-solid state at near-solidus temperatures is essential, but it remains a challenging task. This study aimed to develop new method determine stress-strain evolution aluminum alloys within Gleeble 3800 unit. Stress was determined by newly developed “L-gauge” method, which converted displacement “restrained” jaw, measured using...

Abstract Nano-Al 2 O 3 dispersion-strengthened Cu20W composite was fabricated by vacuum hot-pressing sintering process. The electrical conductivity, relative density, and Brinell hardness were tested, respectively. gleeble-1500D thermomechanical simulator used to conduct isothermal compression with strain rates ranging from 0.001 10 s −1 the temperatures 650 950°C. microstructure of Cu–Al /20W ...

The static recrystallization characteristics and microstructure evolution in hot-deformed austenite were evaluated for a newly developed low-carbon CrNiMnB ultrahigh-strength steel with without molybdenum addition. time 50% (t50%) over wide range of strains hot-deformation temperatures obtained using the stress-relaxation technique on Gleeble thermomechanical simulator. Moreover, effect deforma...

Titanium alloys exhibit high specific strength and stiffness that fit structural applications demanding lightweight. The microstructure of the alpha-beta titanium alloys can be changed by thermomechanical processes such as heat treatments and pre-forging to achieve a certain ductility. Ceramic reinforcements can improve specific strength and stiffness, and also the wear resistance. In Situ part...

Abstract The modified Johnson-Cook constitutive model was developed for describing the flow behavior of Al-7.8Zn-1.65Mg-2.0Cu (wt%) alloy based on curves in temperature range 300 °C?450 °C and strain rate 0.01 s ?1 ? 10 which were obtained by isothermal compression tests conducted a Gleeble-3500 simulator. A two-step optimization method proposed to optimize prediction precision according evalua...