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refinement on strengthening has little improvement. When the extrusion tube temperature increases from 400 ℃ to 450 ℃, the average grain size has little increase, and both strength and elongation are decreased by less than 5%. After being hot treated at 535 ℃ for 24 h,EW75M alloy is directly extruded under conditions of extrusion ratio of 20, extrusion tube temperature of 400 ℃ and extrusion speed......
J. Cent. South Univ. (2020) 27: 2324-2337 DOI: https://doi.org/10.1007/s11771-020-4452-5 Heat transfer simulation of annular elliptical fin-and-tube heat exchanger by transition SST model H NEMATI1... Abstract: In this study, thermo-fluid characteristics of elliptical annular finned tube heat exchanger were numerically studied in detail. Transition SST model was utilized to simulate turbulent flow......
of the binary mixtures (tube for transfusion (TFT) and gauze) was established to verify the reliability of conclusions. The results show the follows. 1) Strong or weak interactions are shown between binary... characteristics are linear superposition of mono-component pyrolysis characteristics.Key words:co-pyrolysis; medical waste; tube for transfusion (TFT); catheter; interaction......
Trans. Nonferrous Met. Soc. China 22(2012) 147-156 Significance-based optimization of processing parameters for thin-walled aluminum alloy tube NC bending with small bending radius XU Jie, YANG He...; accepted 27 June 2011 Abstract: Thin-walled aluminum alloy tube numerical control (NC) bending with small bending radius is a complex process with multi-factor coupling effects and multi-die......
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Preparation and Characterization of Platinum Supported on Carbon Nanotubes with Different Tube Diameter for Cathode Catalysts of Proton Exchange Membrane Fuel CellsHong Su1,2),Bing Zhang1) and Lijuan...="ChDivSummary">Platinum supported on carbon nanotubes(CNTs) with different tube diameters <10,10-20,40-60 and 60-100 nm were prepared.The catalysts were characterized by transmission electron microscopy......
Hydroxyapatite/β-tricalcium Phosphate Composite for Guiding Bone Tissue Growth into a Titanium Tube in 8 mm Dog Tibia Cavity Defects朱继翔1,陈晓明1,WANG Jing2,CHEN Weimin31. Department of Biomedical...="ChDivSummary" name="ChDivSummary">We developed a fixation method and evaluate bone regrowth in the cavities of a Ф4 mm× 8 mm titanium(Ti)tube through porous hydroxyapatite(HAP)/β-tricalcium phosphate(β......
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alloys was investigated by drop tube technique. The results show that for Fe-8%Mo alloy, the rapid solidification product is α-Fe dendrite in large droplet, a mount of solute Mo distributes at the grain... of undercooling. The critical undercooling for this transition increases with the rise of Mo content in the alloy. Key words: undercooling; rapid solidification; solute trapping; dendrite growth; drop tube......