材料期刊网，材料期刊，材料类期刊，材料期刊投稿

PHSICAL MODELLING AND PROCESSING OF Ti-6Al-4V ELI

C.P. Chou , S.C. Wang , C.C. Chang and W.R. Wang 1) Department of Mechanical Engineering , National Chiao Tung University Hsinchu , Taiwan 300 , China 2) Materials Research Laboratories , Industrial Technology Research Institute Chutung , Taiwan 310 , China

金属学报(英文版)

Titanium has been widely used as the implant materials of joint prostheses. This paper simulates the microstructures of the hot forged titanium knee joint component by physical modeling. Ti-6Al-4V ELI were deformed by GLEEBLE 2000 hot deforma- tion simulator in compression mode to determine the hot workability, in the range of 900 to 1100℃, with the strain rates between 0.05 to 5 s~(-1). Test results derived from specimens processed by on-cooling test and on-heating test were compared, thereby estimating the effect due to thermal history. The forging process of Ti-6Al-4V ELI tibial base plate of knee joint prostheses was design based on the workability data obtained.

关键词: physical modeling , null , null , null , null

Shape-Memory Intermetallics Development in Taiwan

S.K.Wu(Institute of Materials Science and Engineering , National Taiwan University Taipei , Taiwan 106 , China) H.C. Lin(Department of Materials Science , Feng-Chia University. Taichung. Taiwan 407. China)

金属学报(英文版)

In Taiwan, many groups engage in the development of TiNi SMAs. The two-stage martensitic transformations of and have been clarified for both TiNi binary and ternary alloys. The deformation behaviors have been investigated by cold-rolling, hot-rolling and wire drawing. Both shape memory effect and pseudoelasticity can be improved by some thermal-mechanical treatments. The damping characteristics of TiNi and TiNiX SMAs have also been systematically studied. Both B19'/B19 martensite (M)and R-phase(R) have high daming capacities due to the stress-induced movement of twin boundaries. Meanwhile, the addition of third elements-Fe and Cu-can largely increase the damping capacity.Recently, some high temperature shape memory alloys-TiHiPd and TiNi-.Au alloys-have also been intensively studied in Taiwan. All these potential investigations on the TiNi SMAs in Taiwan have attracted much attention and their important characteristics will be applied widely in the near future.

关键词: : TiNi shape memory alloys. research and development in Taiwan

抗氧剂300在特种记录纸中的应用

邵芳

合成材料老化与应用 doi:10.3969/j.issn.1671-5381.2001.04.010

本文介绍了抗氧剂300在热敏记录纸和压敏记录纸中的应用概况

关键词: 抗氧剂300 , 热敏记录纸 , 压敏记录纸

CCF300炭纤维的微观结构分析

董昊 , 肇研 , 罗云烽 , 段跃新

材料工程 doi:10.3969/j.issn.1001-4381.2011.z1.004

利用扫描电镜(SEM)、X射线衍射(XRD)、小角X射线散射(SAXS)和Raman光谱研究了不同性能的国产CCF300炭纤维的断面形貌、微晶结构和内部微孔参数.结果表明:三种炭纤维的断面均呈颗粒状特征.相对于CCF300 (B)和CCF300(C)炭纤维,CCF300 (A)炭纤维的石墨微晶堆砌更紧密,微孔含量更低,微孔沿纤维轴向取向角较小,且石墨微晶的有序度较高,因此后者具有更高的拉伸强度和模量.强度相当的CCF300 (B)和CCF300 (C)炭纤维,CCF300(B)模量稍高的原因在于前者的平均微孔尺寸较小,取向角也较小,且其石墨堆砌厚度和有序度(即石墨化程度)略大于后者.

关键词: 炭纤维 , 微观结构 , XRD , SAXS , Raman光谱

C300炭纤维等同性评价

朱凯 , 沈超 , 杨岩

材料工程 doi:10.3969/j.issn.1001-4381.2011.z1.010

运用MIL-HDBK-17复合材料手册,对一条生产线的C300炭纤维开展认证,对比C300炭纤维原生产线进行等同性评价.通过对炭纤维、预浸料和复合材料的比较,结果表明,另一条生产线的C300炭纤维与原生产线相当.

关键词: 炭纤维 , 预浸料 , 等同性

300M高强钢亚动态再结晶行为

张艳姝 , 孙燕 , 杜敬霞

材料热处理学报

为研究300M高强钢的亚动态再结晶行为,采用Gleeble-3800型热模拟试验机对300M高强钢在变形温度900 ～1150℃、应变速率0.001 ～ 10 s-1,道次间隔保温时间1 ～60 s进行双道次热压缩试验.结果表明:变形温度越高、应变速率越大、道次间隔保温时间越长,亚动态再结晶百分数越大.基于试验结果建立了300M高强钢的亚动态再结晶动力学模型,并通过单道次压缩试验验证了模型的正确性.

关键词: 300M高强钢 , 亚动态再结晶 , 双道次热压缩 , 动力学模型

宝钢300 t转炉溅渣护炉工艺研究

崔健 , 杨文远

钢铁

介绍了宝钢300 t转炉溅渣护炉工艺研究中所进行的水模试验、炉渣成分选择、溅渣用氧枪喷头设计、喷吹参数控制等方面的工作,以及所取得的成果.宝钢转炉炉龄已达到14 001炉.

关键词: 转炉 , 溅渣护炉 , 炉龄 , 氧枪

Φ300 mm红外锗单晶生长及性能测试

冯德伸 , 苏小平 , 闵振东 , 尹士平

稀有金属 doi:10.3969/j.issn.0258-7076.2006.05.025

采用直拉法成功拉制直径300 mm红外锗单晶, 讨论了热场温度梯度、拉晶工艺参数以及浮渣对拉晶的影响, 测量了单晶电阻率、红外透过率和断裂模量, 结果表明单晶满足红外光学系统的使用要求.

关键词: Φ300 mm红外锗单晶 , 热场 , 工艺参数 , 浮渣 , 性能测试

300 mm双面磨削硅片损伤层厚度检测

陈海滨 , 周旗钢 , 万关良 , 肖清华

稀有金属 doi:10.3969/j.issn.0258-7076.2006.z1.013

测量300 mm双面磨削硅片损伤层厚度,不仅可以为优化双面磨削工艺提供科学依据,并最终可以减少双面磨削损伤层厚度,而且可以有助于减少抛光时间,改善抛光硅片的几何参数.本文应用恒定腐蚀法和双晶衍射法测量了300 mm硅片双面磨削工艺后的损伤层厚度,对恒定腐蚀法进行了较深入的研究,并结合恒定腐蚀法的结果对硅片进行双晶衍射.得出以下结论:杨氏腐蚀液因为对缺陷具有良好的择优性能,可以用以损伤层厚度检测.而硝酸腐蚀液因为对缺陷不具有良好的择优性能,因而不能用以损伤层厚度检测;恒定腐蚀法可以粗略测定磨削硅片损伤层厚度,而双晶衍射法可以精确测定磨削硅片损伤层厚度;根据恒定腐蚀法的测试结果来进行双晶衍射,可以减少测试样品的数量,节省试验经费;300 mm直拉P型＜100＞硅片经2000#砂轮双面磨削后的损伤层厚度为12.5μm.

关键词: 损伤 , 恒定腐蚀 , 双晶衍射 , 300 mm硅片