材料期刊网

LOW CYCLE FATIGUE BEHAVIOR OF AZ91HP ALLOY IN AS HIGH PRESSURE DIE CASTING

Z. Liu , Y. Y. Xu , Z.G. Wang , Y. Wang , and Z. Y. Liu State Key Laboratory for Fatigue and Fracture of Materials , Institute of Metal Research , Tile Chinese Academy of Sciences , Shenyang 110015 , China School of Material Science and Engineering , Shenyang Technical University , Shenyang 110023 , China

金属学报(英文版)

Fully reversed total strain-controlled low-cycle fatigue tests were conducted at room temperature in air to study fatigue behavior of AZ91HP in as high pressure die casting and subsequently heat treatments. All the specimens in different heat histories exhibited cyclic strum hardening in different degrees. It was difficult to distinguish the fatigue behaviors of the die-casting specimens from the solution-aging specimens. However the solution treated specimens showed longerfatigue life at high strum amplitude and shorter fatigue life at low strain amplitude than die-casting and the solution-aging specimens though they had the lowest yield strength with higher strain hardening. Fatigue fracture surfaces for strain amplitude larger than 0.005 showed very similar to those of the monotonic tensile tests. The SEM examination revealed that regions of fatigue crack growth and final fracture could be characterized by quasi-cleavage mech anisms, but some shallow dimples, slip bands and secondary cracks were found on the fracture surface in the fracturs crack growth areas.

关键词: low-cycle fatigue , null , null , null

The effect of environmental variables on atmospheric corrosion of carbon steel in Shenyang

Chinese Science Bulletin

A study was carried out in order to investigate the effect of contaminants and meteorological variables on the rust layer of carbon steel exposed in Shenyang urban atmosphere. Seven kinds of contaminants and twelve kinds of meteorological parameters were also registered in order to correlate the data with respect to corrosion rate and the stepwise multiple regression analysis was carried out in order to obtain the best regression model. The sum of rainfall time as well as sunshine time and the concentration of H(2)S could stimulate initial atmospheric corrosion of carbon steel. The initial atmospheric corrosion kinetics of carbon steel was observed to follow the cubic equation. The corrosion products were analyzed by XRD and the transformation of phases in different periods was discussed.

关键词: contaminants;meteorological parameters;carbon steel;urban atmospheric;corrosion;stepwise multiple regression;corrosion products;rust;pollution

Optimization on technical parameters for fabrication of SDC film by screen-printing used as electrolyte in IT-SOFC

Journal of Physics and Chemistry of Solids

Sm-doped Ceria (SDC) electrolyte film was successfully fabricated on anode substrate of NiO-SDC by screen-printing. Some technical parameters for fabrication were investigated and optimized, including printing times, ink composition and sintering temperature. Scanning electron microscope (SEM) measurement was done to check the microstructures of SDC film and single cell. The parameters greatly affected the quality of SDC film and cell performance. The single cell with the optimum parameters exhibited an OCV of 0.82 V and a power density of 0.5 W/cm(2) at 600 degrees C. (C) 2008 Elsevier Ltd. All rights reserved.

关键词: thin films;electrochemical properties;microstructure;oxide fuel-cells;ysz electrolyte;thin-film;electrochemical;performance;electrophoretic deposition;reduced-temperature;cathode;anode

University of Science and Technology Beijing

JIA Shizhen University of Science and Technology Beijing , China.

材料科学技术（英文）

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The fourth editorial committee meeting of JMST was held in Shenyang, China

材料科学技术（英文）

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Effect of Doping on Microstructure and Technical Usage Property of Tantalum Wire

武汉理工大学学报-材料科学版(英文版) doi:10.1007/s11595-014-0885-8

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Department of Metallurgy and Materials Engineering of Chongqing University

YAN Guangting Chongqing University , Sichuan , China.

材料科学技术（英文）

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Institute of Materials Science at Jilin University——A Brief Overview

WANG Yuming Institute of Materials Science , Jilin University , Changchun , 130023 , China

材料科学技术（英文）

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Effect of Initialization Technical Parameters on Optical Absorption of Ge2Sb2Te5 Thin Films

材料科学技术（英文）

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Technical note: Research and development of localized corrosion rate monitoring instrument for nonpassivable metal in corrosive media

Corrosion

This paper introduces the design of a localized corrosion rate monitoring instrument that can monitor and evaluate the maximum and stable localized corrosion rate of a nonpassivable metal in a corrosive environment by measuring the current density in a corrosion sensor with an occluded anode.

关键词: instrument;localized corrosion rate;monitor