材料期刊网

CHARACTERIZATION OF NANOSTRUCTURED MATERIALS BY ANALYTICAL ELECTRON MICROSCOPY

L.D. He , G.Y Zeng , X.Liu H.S. Hu , D.Song and L.Z.Cheng(Electron Microscope Laboratory Northeastern University Shenyang 110006 , ChinaManuscript received 20 July 1995 , in revised form 10 April 1996)

金属学报(英文版)

The analytical electron microscopy has been used to characterize the morphology,structure and composition of the nanostructured material of Sn- Bi alloy prepared by a modified electrohydrodynamic technique. The electron diffraction pattern and the corresponding contrast image for the discrete particles with a diameter smaller than 4 nm have been obtained.It is shown that the nanocrystalline Sn-Bi alloy particles comprise a single crystal of Bi-containing β-Sn solid solution or of Sn-containing Bi solid solution. A direct preparation procedure of the samples during the electrohydrodynamic rapid solidification process has been developed for electron microscopic observation.

关键词: :nanostructured material , null , null , null

钢管内涂标准SY/T 4078-1995应尽快修订

何浩 , 王献昉 , 金华

腐蚀与防护 doi:10.3969/j.issn.1005-748X.2004.09.012

石油天然气行业标准SY/T 4078-1995<钢质管道内涂层液体涂料补口机补口工艺>在适用范围、焊口表面处理、现场施工过程及焊口补口涂层检验等部分都有不妥之处.成功的工程实例表明:无溶剂环氧树脂作为管线内壁涂层的补口涂料是非常合适的,它可以使传统的补口工艺更加科学、合理.为保证钢管内壁涂层的整体质量应尽快予以修订该行业标准.

关键词: 石油天然气 , 行业标准 , 管线 , 无溶剂环氧树脂 , 涂层

Recent Activities of the Board of Governors of Acta Materialia Inc.July 2007-July 2008

金属学报(英文版)

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Bibliography of Science and Technology of Rare Earths Published in China(1995)

王立军

中国稀土学报

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人工晶体跨世纪的10年(1995～2005)

蒋民华

硅酸盐通报 doi:10.3969/j.issn.1001-1625.2005.05.001

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Bibliography of Science and Technology of Rare Earths Published in China(1995)

周泰禧

中国稀土学报

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Abstracts From Acta Metallurgica Sinica Volume 31, 1995

金属学报(英文版)

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Bibliography of Science and Technology of Rare Earths Published in China(1995)

康德山 , 王学业 , 陈念贻

中国稀土学报

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双相20钢的研究

雷廷权 , 沈显璞

金属学报

本文研究了经亚温淬火获得的铁素体-马氏体双相20钢的组织性能关系以及冷轧时的形变行为。试验结果表明:双相钢中的铁素体与马氏体同单独存在时的组织性能有明显差异,通常用以估价纤维增强复合材料强度的混合律并不适用。双相20钢的冷轧形变由开始阶段的等应力模型逐渐向等应变比模型过渡,形变强化则由两相间的不等强化状态逐渐向等强度比状态演变。文中提出了冷轧时形变行为的综合图,能够清楚地描述双相20钢中两相组织及性能相对变化的全过程。

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WELDING BETWEEN HIGH MANGANESE STEEL AND HIGH CARBON STEEL

M. H. Guo , D. C. Shao , Z. G Dong and J. C Yang National Key Laboratory Advanced Welding Production Technology , Harbin institute of Technology , Harbin 150001 , China

金属学报(英文版)

Manuscript received 30 July 1999 Abstract The shielded metal arc welding (SMAW) of a manganese steel part as a crossing of railway track to a carbon steel part as the rails of the railroad is the welding of dissimilar steel. It are was known that it is not possible to the the rail of railroad directly to the cross- ing of railway track made from a steel containing about 14% of manganese (wt. ) because of so many differences between the two kinds of steels such as composition, microstructure,mechanical properties and weldability.A method was used to solve the problem by presetting an intermediate layer on each side of the joint and other special procedures were used.The result of test indicated that a good weld joint was obtained.

关键词: high manganese steel , null , null , null