材料期刊网，材料期刊，材料类期刊，材料期刊投稿

概括描述了达涅利康力斯公司氧气顶吹转炉副枪系统、动静态过程模型、废气分析系统、智能喷枪系统和底部搅拌系统等技术，以及二级系统/动静态过程模型的配置。提供了一些IJmuiden厂和一家中国用户厂过程控制系统近几年的有关运行数据。

关键词: 氧气顶吹转炉;工艺过程;自动化系统

E型环氧树脂的NMR研究

冀克俭 , 刘元俊 , 张银生

高分子材料科学与工程

利用1H-NMR测定了E型环氧树脂的数均分子量,并利用13C-NMR表征了E型环氧树脂的微观结构.

关键词: 环氧树脂 , 核磁共振谱 , 微结构

低能电子碰撞Ar(e, 3e)双电离实验

贾昌春 , A.Lahmam-Bennani , A.Duguet , L.Avaldi , M.Lecas , Dal Cappello

原子核物理评论 doi:10.3969/j.issn.1007-4627.2002.z1.007

通过Ar(e, 3e)五重微分截面3维图的理论与实验比较发现, 在低能电子入射的情况下, 理论与实验存在较大的偏差.

关键词: (e,3e) , 双电离 , 五重微分截面

屏栅电离室+△E-E望远镜探测器系统

王涛峰 , 朱丽萍 , 孟庆华 , 王黎明 , 韩洪银 , 夏海鸿 , 黎光武 , 屈从会 , 顾先宝

原子核物理评论 doi:10.3969/j.issn.1007-4627.2007.03.008

研制了屏栅电离室+△E-E望远镜探测器系统,系统的屏栅电离室用来测定252Cf自发裂变碎片的能量和相对于探测器系统轴线的发射角,与屏栅电离室耦合安装的△E-E望远镜探测器由一个薄的屏栅电离室(气体△E)和一个金硅面垒探测器(E)组成,用来确定互补碎片的电荷.用本系统对252Cf自发裂变碎片电荷分布进行了4个参数的关联测量,结果表明,这个探测器系统的电荷分辨能力Z/△Z好于40:1.

关键词: 屏栅电离室 , △E-E望远镜 , 电荷分辨能力

R7E拖车轮E级热处理工艺的研究及应用

张振国 , 刘英 , 邹东红

机械工程材料 doi:10.3969/j.issn.1000-3738.2004.09.010

根据英国BS5892-1992标准中的R7E拖车轮E级热处理要求和力学性能要求,研究了温度、冷却介质、车轮形状等对拖车轮整体力学性能的影响,确定了R7E拖车轮E级热处理工艺为(830士10)℃×(3.5～4)h+(530±10)℃×(3.5～4)h,该工艺可以满足BS5892-1992的要求,按此工艺规程生产的车轮达到了标准中规定的力学性能要求.

关键词: 车轮 , E级热处理 , 力学性能

METASTABLE CHARACTERISTICS OF β-W

HUANG Huimin CHEN Xinmin Central South University of Technology , Changsha , China HUANG Huimin Associate Professor , Department of Chemistry , Central South University of Technology , Changsha , China

金属学报(英文版)

The nature of the oxygen contained in β-W was investigated with DSC,X-ray analysis on quenched samples and Auger spectroscope.It was shown that the oxygen contained in nonpyrophoric β-W consists of the reversibly chemisorbed oxygen and the interstitial oxygen which could form an interstitial solid solution with β-W.It seems better to consider β-W to be a metastable phase of tungsten with the interstitial oxygen as stabilizer.

关键词: tungsten , null , null , null

EFFECT OF W ON MECHANICAL PROPERTIES OF 12%Cr HEAT-RESISTANT STEEL

LIU Xingyang Northeast University of Technology , Shenyang , China FUJITA Toshio The University of Tokyo , Tokyo , Japan

金属学报(英文版)

The effect of W on mechanical properties of 12% Cr-W-V-Nb heat resistant steel at high temperatures and room temperature is reported.The experimental results indicated that if the W content was about 2.2—3.0 wt-%,there was no obviously change of R.T.tensile strength, but impact toughness decreased with the rise of W content.On the other hand,the increase of W content enhanced the short time stress rupture strength,but did not for the long time one. The increase of W have two effects on the precipitation behavior,promoting Laves formation of type Fe_2W,increasing the precipitated phase amount and speeding up the coarsening pro- cess of precipitated phase at high temperatures.The effect of W on the mechanical properties is closely associated with precipitation behaviors.When the rupture life is short,there has no enough time to coarsen the precipitated phases,so the increase of precipitated phases results in strengthening effect,i.e.the W increases the high temperature strength.After prolonged expo- sure,the evident coarsening took plaee,that decreased the effect of precipitation.

关键词: 12%Cr-W-V-Nb steel , null , null , null

E5018焊条低温冲击韧性影响因素的探讨

刘宁生 , 李美珍 , 蒋成刚 , 龙昌茂 , 黄斌

材料开发与应用 doi:10.3969/j.issn.1003-1545.2008.04.007

通过对E5018焊条配方的优化设计和理化性能试验,探讨了其熔渣碱度及焊缝金属中Mn、Si含量和Mn/Si值,对焊缝金属低温冲击韧性的影响规律.当熔渣碱度约为2.0,焊缝金属中w(Mn)=1.42%～1.48%,w(Si)=0.38%～0.48%和Mn/Si值大于3.5时,焊缝金属可获得较高和稳定的低温冲击韧性值.

关键词: E5018焊条 , 低温韧性 , 影响因素