共搜索到38779条信息，每页显示10条信息，共3878页。用时：0小时0分1秒98毫秒
. In the present research, plastic deformation by cold stretching at room temperature (RT) was performed on as-extruded Mg-10Gd-3Y-0.6Zr alloy, and the effects of plastic deformation on precipitation..., and then subjected to 1%, 2% and 3% plastic deformation by stretching at room temperature, respectively. Artificial aging was conducted at 523 K. Hardness measurement was carried out on a 450SVDTM Vickers......
......
viscosity, plastic viscosity and yield point of oil-based drilling fluids at high temperature and pressure was established using the method of regressive analysis. It is confirmed that the calculated data..., nearly straightlines, which show that the drilling fluids behavior like Bingham plastics at high temperature and high pressure, so we can conclude that the Bingham plastic model can be chosen......
characteristics of the inner and outer layers of the scale is different during hot rolling. Key words: 700 MPa grade high strength steel; iron oxide scale; rolling temperature; plastic deformation 钢铁材料... oxide scale exhibits different deformation characteristics under different deformation temperature and deformation conditions. The plastic deformation of iron oxide scale mainly appears on the FeO......
Microstructure tailoring of Al0.5CoCrFeMnNi to achieve high strength and high uniform strain using severe plastic deformation and an annealing treatmentH.T.Jeong,W.J.KimDepartment of Materials Science and Engineering, Hongik University摘 要:Ultrafine-grained alloys fabricated by severe plastic deformation(SPD) have high strength but often poor uniform......
3D finite element method analysis of deformation and temperature rise during equal-channel angular pressing ZHANG Xin-ping(张新平), CHEN Guang(陈 光), WANG Xue(汪 雪), LING Jie(林 ...]. It is an attractive grain-refining method to obtain bulk nanostructured materials in which grain sizes are up to about 100 nm. During ECAP, the billet undergoes severe plastic deformation as it passes through......
and/or a decrease of punch velocity. When the displacement is more than 4 mm, the load decreases significantly with an increase of the deformation temperature, which is related to the high liquid fraction... the semi-solid extrusion of Al-4Cu-Mg alloy varies with the process parameters and deformation regions. 2) High deformation temperature should be chosen during the semi-solid extrusion of Al-4Cu-Mg......
that with the progression of plastic deformation, the deformed polycrystalline Cu specimens notably with high stacking fault energy exhibit formation of microstructures characterized by dislocation cell...: 30–38. [2] ARDELJAN M, BEYERLEIN I J, MCWILLIAMS B A, KNEZEVIC M. Strain rate and temperature sensitive multi-level crystal plasticity model for large plastic deformation behavior: Application......
J. Cent. South Univ. (2018) 25: 747-753 DOI: https://doi.org/10.1007/s11771-018-3779-7 Elastic and plastic deformation behavior analysis in small punch test for mechanical properties evaluation..., part of Springer Nature 2018 Abstract: In order to estimate deformation and mechanical properties of material accurately, elastic and plastic deformation behavior of small punch test was discussed......
and process, including plastic deformation under compressive stress, diffusion wear, attrition wear and abrasive wear, etc, appear to be the main ways in which carbide tools are worn or change shape so that they no longer cut effectively[20]. The former two failure modes based on deformation and diffusion are temperature dependent and come into play at high cutting speeds[21, 22]. As for diffusion......
