材料期刊网

EXPERIMENTAL AND THEORETICAL INVESTIGATION OF PSEUDOELASTIC HYSTERESIS IN SHAPE MEMORY ALLOYS

S.K. Gong and H.B. Xu (Department of Materials Science and Engineering , Beijing University of Aerollautics and Astronautics , Beijing 100083 , China)(Department of Materials Science and Engineering , Beijing University of Aerollautics and Astronautics , Beijing 100083 , China)

金属学报(英文版)

The states inside the pseudoelastic hysteresis loop of CuZnAl single crystals are investigated by deformation controlled stress-strain measurements. The points that trigger the internal yield and recovery inside the pseudoelastic hysteresis loop dance a line that traverses the hysteresis loop from the upper left to the lower Tight corner. According to the thermodynamic arguments, we interpret that line as a line of unstable phase equilibrium. It is assumed that this line determines also the tendency for stress relaxation on the yield line and for a stress growth on the recovery line.

关键词: shape memory alloy; pseudoelastic hysteresis; CuZnAl

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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Abstracts of papers from Journal of University of Science and Technology Beijing

稀有金属（英文版）

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CORRELATION BETWEEN STRESS COMPONENTS AND STRESS CORROSION CRACKS IN BRASS Lecturer,Department of Materials Physics,University of Science and Technology Beijing,Beijing 100083,China

QIAO Lijie LIU Rui XIAO Jimei University of Science and Technology Beijing , Beijing , China

金属学报(英文版)

The effects of stress components on nucleation sites and propagation directions of stress cor- rosion cracks in brass were investigated with specimens under mode Ⅱ and mode Ⅲ loadings. The results indicated that under mode Ⅱ loading,stress corrosion cracks nucleated on the site with maximum normal stress component and propagated along the plane perpendieular to the maximum normal stress,under mode Ⅲ loading,the stress corrosion crack was not evident on the 45°plane due to the general corrosion in aqueous solution with high NH_4OH concentra- tion,while stress corroded in aqueous solution with low NH_4OH concentration, numerous cracks with spacings of 10—150μm were found on the 45°plane with maximum normal stress and no stress corrosion cracks was observed on the plane with maximum shear stress.

关键词: stress corrosion cracking , null , null , null

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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Towards the ultimate storage ring: The lattice design for Beijing Advanced Photon Source

中国物理C doi:10.1088/1674-1137/37/5/057003

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RF deflecting cavity design for bunch length measurement of photoinjector at Tsinghua University

中国物理C

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Design of an MeV ultra-fast electron diffraction experiment at Tsinghua university

中国物理C

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Huazhong University of Science and Technology(H.U.S.T)

材料科学技术（英文）

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