To explore the effect of different Mg contents on morphology, composition, distribution, and deformation sulfides in 49MnVS3 non-quenched tem-pered steel, inclusions were observed counted by Zeiss metallographic microscope scanning electron microscope, com-pressed samples compared Gleeble-3500 thermal simulation test ma-chine. Results showed that size sulfide steel decreases distri-bution unifo...

The deformation behavior of homogenized Al-7.5Zn-1.5Mg-0.2Cu-0.2Zr alloy has been studied by a set of isothermal hot compression tests, which were carried out over the temperature ranging from 350 °C to 450 °C and the strain rate ranging from 0.001 s-1 to 10 s-1 on Gleeble-3500 thermal simulation machine. The associated microstructure was studied using electron back scattered diffraction (EBSD)...

The recycling of steel scrap is becoming more and developed to save resources protect the environment. However, impurities such as antimony in cannot be economically effectively removed, resulting an inevitable accumulation impurities. Once impurity concentration exceeds a certain limit, they will have great impact on ductility deterioration hot shortness steel. It has been shown that sulfide c...

Hot ductility behavior between 700 and 1050°C is governed by precipitation phase transformation, which can cause cracking limit steel processing in other ways. Characterization of this with conventional microscopy techniques difficult due to the limited particle size, usually occurring on nanometer scale. Casting simulation hot tension testing were performed using a Gleeble 3500 generate proper...

The application of accurate constitutive relationship in finite element simulation would significantly contribute to accurate simulation results, which play critical roles in process design and optimization. In this investigation, the true stress-strain data of an Inconel 718 superalloy were obtained from a series of isothermal compression tests conducted in a wide temperature range of 1153–135...

The hot deformation of TA15 titanium alloy was studied by the compression test on Gleeble-3800 thermal simulation equipment. true stress-strain curves at temperature 1123-1223K and strain rate 0.001-1s -1 were obtained.. results show that flow stress increases with decreasing temperature, as increases. And process is accompanied work hardening dynamic recovery recrystallization. Based alloy, Ar...

Abstract Ultrasonic velocity and attenuation measurements are powerful tools to infer information about the microstructure and properties of metals and their alloys. To begin, elastic constants can be measured with precision as high as one part in 10. At this level of precision, changes in elastic constants caused by texture, phase transformations, and various internal friction phenomena can be...

T. Kubina, J. Kliber, L. Kunčická, M. Berková, J. Horsinka, VŠB – Technical University of Ostrava, Faculty of Metallurgy and Materials Engineering, Czech Republic J. Bořuta, Material & Metallurgical Research, Ltd., Ostrava, Czech Republic Energy dissipation and areas of process instability were investigated in two alloys. The fi rst one was brass, the second one was the steel 9 Cr (P91). The te...