材料期刊网

CRYSTAL DEFECTS AND GRAIN INTERFACE STRUCTURE OF ION-NITRIDED LAYERS

SUN Dongsheng LI Fengzhao Shandong Polytechnic University , Jinan , Laboratory of Atomic Imaging of Solids , Institute of Metal Research , Academia Sinica , Shenyang , ChinaDAI Jiyan LI Douxing Laboratory of Atomic Imaging of Solids , Institute of Metal Research , Academia Sinica , Shenyang , China associate professor , Institute of Materials Engineering , Shandong Polytechnic University , Jinan 250014 , China

金属学报(英文版)

Observation under high resolution electron microscope shows that the continuous bombing of high speed ions produces a great amount of vacant site defects.The assembly of vacancies forms vacant dish,and the collapase of vacant dish forms stacking fault tetrahedrons and oth- er crystal defects.The interfaces between phase ε(Fe_(2-3)N)and phase γ'(Fe_4N)are smooth, straight and coherent,and they have the orientation relationships of(11)//(0001)and [110]/[110] .

关键词: crystal defect , null , null , null

MECHANICAL PROPERTIES OF Al-Li ALLOY 8090 AT CRYOGENIC TEMPERATURES

SUN Dongsheng LI Fengzhao ZHANG Gang Shandong Polytechnic University , Jinan , China Lecturer , Centre of Materials Testing and Analysis , Shandong Polytechnic University , Jinan 250014 , China

金属学报(英文版)

Cryogenic strength,ductility and toughness of AI-Li alloy 8090 were found to be superior to those at ambient temperature,and up to optima at about 20 K.Different aging regimes may only influence on its cryogenic yield strength and elongation.

关键词: Al-Li alloy , null , null , null

University of Science and Technology Beijing

JIA Shizhen University of Science and Technology Beijing , China.

材料科学技术（英）

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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）

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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）

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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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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）

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Drive laser system for the DC-SRF photoinjector at Peking University

中国物理C doi:10.1088/1674-1137/40/1/017004

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