Results 171 to 180 of about 8,686 (222)
Effects of Grain Refiner and Cooling Rate on Solidification Structure of H62 Brass
Advanced Materials Research, 2013 In this paper, effects of different grain refiners on solidification structure of H62 brass under different cooling rates were investigate by macro corrosion, SEM and EDX analyses. Results of experiments indicate that the columnar crystal zone of H62 brass is completely eliminated and the grain size is reduced remarkably by 0.01%B.
Ge Wang Shuai, You Li, Zheng Hua Guo
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Corrosion behavior of copper T2 and brass H62 in simulated Nansha marine atmosphere
Journal of Materials Science & Technology, 2019 Abstract The accelerated corrosion behavior of copper T2 and brass H62 exposed in simulated Nansha marine atmosphere for different periods were investigated by weight loss method, SEM, XRD and potentiodynamic polarization measurements. The results indicate that copper T2 and brass H62 underwent severe corrosion, and the final corrosion rates at 32 ...
Miaoran Liu +6 more
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Tribology International, 2020 Abstract The cylinder/valve plate friction pairs were proven to be subjected to wear and failure in axial piston pumps. The synergy method of surface micro-texturing and wet micro-blasting was put forward to enhance the tribological performance of H62 brass/38CrMoAl conjunctions.
Zhanqiang Liu +2 more
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Dissimilar Welding of H62 Brass-316L Stainless Steel Using Continuous-Wave Nd:YAG Laser
Materials and Manufacturing Processes, 2014 Continuous-wave Nd:YAG laser welding of H62 brass and 316L stainless steel was studied using welded joints made with different overlap configurations. Optical and scanning electron microscopies, energy-dispersive X-ray spectroscopy, and microhardness testing were used to analyze the microstructures and mechanical properties of the joints.
Yang Li, Junqi Shen, Shengsun Hu, Bao Hu
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Materials Science and Engineering: A, 2019 Abstract In this work, the tensile and bending yield strengths of 304 stainless steel and H62 brass are effectively enhanced by surface spinning strengthening (3S) that can introduce a strengthening layer with gradient microstructure on the samples.
Huajie Yang +6 more
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Metabolism of glycolic acid by Azotobacter chroococcum PRL H62
Canadian Journal of Microbiology, 1973When Azotobacter chroococcum grows on glycolic acid as sole C source, it cannot utilize N2 and must be provided with reduced nitrogen. Glycolic acid is metabolized via Kornberg's dicarboxylic acid cycle. The TCA cycle enzymes are low in activity, and isocitric dehydrogenase is absent.
Kurz, W. G. W., LaRue, T. A. G.
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Brass H62 Hot Extrusion of Micro Gear
Materials Science Forum, 2011Gears are very important and widely used driving components in mechanical instruments, and the demands of micro-gears are increasing more and more active as the MEMS technology develops in recent years. In this paper, a brass micro gear, which modulus m = 0.125 mm, pressure angle α = 20°, number of teeth z = 6, addendum circle diameter d = 1 mm, hot ...
Xiang Ru Liu, Xu Dong Zhou
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Experiment Research on Grinding Temperature of Micro-Grinding H62
Advanced Materials Research, 2013The thermocouple temperature measurement method was adopted to measure the surface temperature in micro-grinding experiment. According to the different grinding depth, the appropriate processing parameters were chosen to find out the temperature field distribution on the surface and in different depth of subsurface.
Ya Dong Gong +5 more
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Constitutive modeling of hot deformation behavior of H62 brass
Materials Science and Engineering: A, 2011Abstract The hot deformation behaviors of H62 brass are investigated by isothermal compression tests on a Gleeble 1500 thermal-mechanics simulator in the temperature range of 650–800 °C and the strain rate range of 0.01–10 s −1 . Most of the stress–strain curves exhibit a single peak stress, indicating a typical dynamic recrystallization (DRX ...
Cheng Guo, Yan-Hong Xiao, Xiao-Yan Guo
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Constitutive Modeling for Superplastic Flow Behavior of H62 Alloy
Advanced Materials Research, 2014In order to precisely describe superplastic flow behavior of H62 alloy, a empirical constitutive equation was established based on the experimental data, which were obtained from the constant strain rate tensions (2.0×10-4~4.0×10-2s-1) at 720 °C. Through verification of the constitutive equation with the experimental data in constant strain rate ...
Hong Jie Jia +3 more
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