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研究杂质对金属的性能 影响. 关键词:铍;剩余电阻比;时效处理 中图分类号:TG 146.2 文献标识码:A Effect of aging treatment on residual resistance ration of beryllium ZHANG Qing-lai1, A.B.Bondarev2, V.A.Andreev2...; Abstract: The effect of aging treatment on residual resistance ration of pure beryllium was studied by the use of electric potential approach. The results show that the residual resistance ration relates......
Effect of Melt Superheating Treatment on Directional Solidification Interface Morphology of Multi-component AlloyChangshuai Wang, Jun Zhang, Lin Liu and Hengzhi Fu State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi an 710072, China摘 要:The influence of melt superheating treatment on the solid/liquid (S/L......
with the electrical and thermal conductivities. After solution treatment, the eutectic structure partially decomposed and Zn atoms dissolved into the matrix, leading to the decrease in both the electrical and thermal conductivities of the alloy. During the early stages of the aging treatment, solute atoms precipitated from the matrix, thus increasing the electrical conductivity of the alloy. After......
. Perforation parameters such as temperature, total compression deformation rate and appearance quality were considered. Size, microstructure and properties of different heat treatment conditions were... of punch presses should be 12%~17%. Ti80 alloy tube under the heat treatment regime of (960 °C, 30 min, WC)+(600 °C, 4 h, AC) can obtain good comprehensive mechanical properties. Key words: Ti80 alloy......
J. Cent. South Univ. Technol. (2011) 18: 2163-2169 DOI: 10.1007/s11771-011-0958-1 Operating performance of novel reverse-cycle defrosting method based on thermal energy storage for air source heat... system operation for air-source heat pumps (ASHPs). A novel reverse-cycle defrosting (NRCD) method based on thermal energy storage to eliminate frost off the outdoor coil surface was developed. Comparative......
Effects of solution heat treatment on corrosion resistance of 5083F Al alloy Seong-Jong KIM, Seok-Ki JANG Division of Marine Engineering, Mokpo Maritime University, Mokpo City, Jeonnam... suffer a little corrosion in the marine environment, when they run in high speed, and high flow rate, etc. Therefore, solution heat treatment was carried out to prevent corrosion. The optimal heat......
treatment, few significant differences in content and orientation of phases can be directly and explicitly found except the thermal effect from the applied electric current. The results will provide reference... techniques for hot processing and welding techniques. The thermal behavior under different densities of electric current and the effect of electric current at temperature of 780 oC using low density......
" name="ChDivSummary">The microstructure evolution of AlCoCrFeNiTi0.5 alloy and AlCoCrFeNiCu alloy during heat treatment was systematically studied,to reveal the influence rules of chemical activity... with increasing temperature.The addition of Cu inhibited the precipitation of σ phase during heat treatment.Adding Ti maintained the stable dendritic morphology,while adding Cu reduced the thermal......
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