The stress-strain data of 20MnNiMo alloy were collected from a series of hot compressions on Gleeble-1500 thermal-mechanical simulator in the temperature range of 1173 ∼ 1473 K and strain rate range of 0.01 ∼ 10 s(-1). Based on the experimental data, the improved Arrhenius-type constitutive model and the artificial neural network (ANN) model were established to predict the high temperature flow...

The thermo-mechanical control processing (TMCP) of low carbon (C) Nb-Ti-containing HSLA steel with different cooling rates from 5 to 20 ◦C/s was simulated using a Gleeble 3500 system. The samples’ microstructure was characterized and the tensile properties measured. The results show that a microstructure mainly consisting of quasi-polygonal ferrite (QPF), granular bainitic ferrite (GBF), and ma...

iii Abstract: High manganese TWIP (TWinning Induced Plasticity) steels are particularly attractive for automotive applications because of their exceptional properties of strength combined with an excellent ductility. However, as austenitic steels, they appear to be sensitive to liquid zinc embrittlement during welding, the liquid zinc arising from the melted coating due to the high temperatures...

The reduction of weight is crucial in the automotive sector to reach a lower energy consumption and an increased range, especially for electrically powered vehicles. In this regard, body-in-white parts offer high potential application lightweight construction. required savings can be achieved by implementing with strength-to-weight ratio. A promising approach combination materials design, which...

Abstract The development of hot and warm forming processes for the manufacture complex-shaped alloy components has been increasing. At same time, knowledge effect certain variables involved in such as temperature strain rate is essential an accurate modelling materials processes. This work provides a sensitivity study on different testing conditions beta titanium-molybdenum (Ti-Mo) alloys. Data...

In general, the strength-to-weight ratio is a marked property of high- strength low-alloy steel. The coiling temperature an important process parameter in control and improvement final microstructure mechanical properties. this work, effect deformation on properties high Ti- V microalloyed HSLA steels were investigated using Gleeble 1500 TM thermomechanical processing simulator. samples austeni...

The hot-deformation behavior of A356 aluminum alloy with a Sr modification was investigated using Gleeble 1500 thermal simulator. true stress-strain curves deformation temperature 300–500 °C and strain rate 0.01–5 s–1 were clarified. activation energy the 221.474 kJ/mol. influences friction on investigated, then constitutive equation established. results show that flow stress is obviously affec...