材料期刊网

采用改进冲击摆锤评价7075-T651合金焊缝的断裂能

R. R. AMBRIZ , D. JARAMILLO , C. GARCíA , F. F. CURIEL

中国有色金属学报(英文版) doi:10.1016/S1003-6326(16)64157-2

采用改进冲击摆锤，研究7075-T651合金焊缝夏比试样的力?时间曲线。考虑力?时间曲线和恒冲击速率，获得不同区域的断裂能。与焊缝金属(7.88 J)和基体金属(5.37 J(纵向)和7.37 J(横向))的断裂能相比，热影响区的断裂能更高(33.6 J)，这是由于焊接过程中，热力学不稳定的η′相发...

关键词: 7075-T651 焊接接头 , 改进夏比摆锤 , 力-时间曲线 , 断裂能 , 动态屈服强度

Proposed relationship between the exponents gamma and eta at liquid-vapour critical point via the dimensionality d

Physics and Chemistry of Liquids

In earlier work, Ma [S.K. MA, Phys. Rev. Lett., 29, 1311 (1972)] has studied the critical exponents and for charged and neutral Bose gases. Here we use the result of Ma, valid for general dimensionality d but only to O(m-1), where m is the number of components of the B...

关键词: critical exponents;Ising model;dimensionality

YNLL新型干法水泥2500 t/d生产线的热工检测与分析

赵国华 , 齐砚勇 , 潘玉峰

硅酸盐通报

对YNLL水泥厂2500 t/d生产线进行热工标定并分析,系统烧成热耗为3889 kJ/kg.cl,高于全国平均水平.高温风机拉风偏大,一级筒出口温度为370℃,偏高.篦式冷却机效果欠佳,AQC抽风量偏高,直接影响了熟料质量和余热发电量,...

关键词: 热工标定 , 新型干法水泥 , 篦冷机

LNZL水泥厂2500t/d生产线的热工检测与分析

曹华夏 , 毕金栋 , 李昌勇

硅酸盐通报

对LNZL水泥厂2500 t/d生产线进行热工标定并分析,该厂熟料产量超过设计产量28.96％,达到3224.1t/d.系统烧成热耗为3302.6kJ/kg熟料,低于全国平均水...

关键词: 热工检测 , 水泥生产线 , 运行情况

Energy levels of the d*(8) electron and d*(2) hole system

Physical Review B

In the investigation of the optical and magnetic properties of the semiconductors containing transition-metal ions, the one-electron orbital cannot be treated with a pure d orbital because of a strong covalence. This paper presents the energy matrix of the

关键词: zns-ni;absorption;vanadium;impurities;spectra;ions

Influence of phytic acid concentration on performance of phytic acid conversion coatings on the AZ91D magnesium alloy

Materials Chemistry and Physics

In this study, the phytic acid conversion coating, a new environmentally friendly chemical protective coating for magnesium alloys, was prepared. The influences of phytic acid concentration on the formation process, microstructure, chemical state and corrosion resistance of the conversion coatings o...

关键词: concentration;magnesium alloys;phytic acid;conversion coatings;corrosion-resistance;chromatography;behavior;copper;mg

液晶材料与3D显示

张兴 , 郑成武 , 李宁 , 周兴丹 , 李正强 , 华瑞茂

液晶与显示 doi:10.3788/YJYXS20122704.0448

介绍了3D显示的基本原理,重点介绍了目前3D显示的主流技术类型,包含了眼镜式3D技术以及裸眼式3

关键词: 3D显示 , 眼镜式3D显示 , 裸眼式3D显示 , 液晶材料

COMPARISON OF FATIGUE AND CREEP BEHAVIOR BETWEEN 2D AND 3D-C／SiC COMPOSITES

D.Han , S.R.Qiao , M.Li , J.T.Hou , X.J.Wu

金属学报(英文版)

The differences of tension-tension fatigue and tensile creep characters of 2D-C/SiC and 3D-C/SiC composites have been scrutinized to meet the engineering needs. Experiments of tension-tension fatigue and tensile creep are carried out unde...

关键词: 2D-C/SiC , null , null

Surface properties of 3d transition metals

Philosophical Magazine

Using the projector augmented wave method within density functional theory, we present a systematic study of the layer relaxation, surface energy and surface stress of 3d transition metals. Comparing the calculated trends for the surface energy and stress with those ob...

关键词: surface relaxation;surface energy;surface stress;magnetic transition;metals;density functional theory;full charge-density;initio molecular-dynamics;total-energy;calculations;augmented-wave method;ab-initio;electronic-structure;atomic volume;work function;basis-set;relaxation

R&D STATUS ON INTERMETALLICS IN CHINA

CHEN Guoliang(State Key Laboratory for Advanced Metals and Materials University of Science and Technology Beijing Beijing 100083 , China)SHI Changxu (Academia Sinica , Beijing 100864 , China)

金属学报(英文版)

This paper briefiy introduces the R&D of intermetallics in China. R&D on intermetallics in a national scale in China began near ten years ago. The investigation in past years focused on the fundamental research and materials devel...

关键词: :intermetallic alloys , null , null , null