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; micro-arc oxidation; TC4 alloy; corrosion; wear property 1 Introduction Titanium alloys are widely and frequently used due to their high specific strength, corrosion resistance and excellent bio-compatibility [1-4]. Usually, Ti6Al4V (TC4) alloy is used in high value-added fields such as aviation, aerospace, bio-medicine and navigation industries as structure-function integrated material [5]. However......
Laser rapid forming of low cost hydride-dehydride titanium alloy powder CHEN Jing(陈 静), ZHANG Feng-ying (张凤英), LIN Xin(林 鑫), TAN Hua(谭 华), HUANG Wei-dong(黄卫东) State Key Laboratory... forming; hydride-dehydride titanium alloy powder; rare earth Nd; microstructure; mechanical properties 1 Introduction Recent trend in the hot machining industry is to develop advanced net shape forming......
Hot deformation behavior and constitutive equations of titanium alloy Ti26 DU Yu(杜宇), QI Yun-lian(戚运莲), ZHAO Yong-qiang(赵永庆), WANG Rui-ning(王蕊宁), LIU Wei(刘伟), XI Zheng-ping(奚正平), HONG Quan.... Constitutive equations were formulated to describe the temperature dependence of the flow stress over a wide range of strain rates. Key words: Ti26 titanium alloy; hot deformation; activation energy......
J. Cent. South Univ. Technol. (2011) 18: 1795-1801 DOI: 10.1007/s11771-011-0904-2 Effects of sealing process on corrosion resistance and roughness of anodic films of titanium alloy Ti-10V-2Fe-3Al LIU... and Springer-Verlag Berlin Heidelberg 2011 Abstract: Anodic oxide films of titanium alloy Ti-10V-2Fe-3Al were sealed in calcium acetate solution. The morphology and composition of the sealed films were......
of Ti6Al4V alloy 图4 直接FSP搅拌区及TC4母材的SEM像 Fig. 4 SEM images of direct-FSP SNZ ((a), (b)) and Ti6Al4V alloy substrate (c) 图5 TC4母材和直接FSP搅拌区XRD谱 Fig. 5 XRD patterns of TC4 substrate and direct-FSP (D... on TC4 alloy substrates at different laser burning time 图11 激光30 s连续脉冲点烧条件下Ti-Cu改性层表面点烧蚀坑形貌 Fig. 11 Surface morphology (a) and SEM image (b) of laser continuous pulse burning pitting after......
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TC4钛合金激光叠焊成形及显微组织 黄继华1,杨静1,郭和平2,赵兴科1,程东海1 (1.北京科技大学,北京,100083;2.北京航空制造工程研究所,北京,100024) 摘要:研究TC4钛合金激光叠焊成形及焊缝显微组织特征,提出表征叠焊接头焊合程度的指标--焊合率ψ.研究结果表明:焊缝熔宽随着激光功率的升高和焊接速度的降低逐渐增加,上板焊缝熔宽大于下板焊缝,而连接焊缝处的熔宽最小;焊合率随着叠焊两板间间隙的增加或焊接线能量的升高而降低;焊缝组织为针状马氏体α''组成的"网篮"组织,上板焊缝中马氏体分布更密集;热影响区中存在少量细小马氏体组织,且呈梯度分布.由于马氏体的界面增强效应,使焊缝横向显微硬度沿焊缝中心向母材逐渐降低,且上板焊缝显微硬度略高于下板焊缝. 关键词:激光叠焊; TC4钛合金; 焊合率; [全文内容正在添加中] ......
Aging properties and microstructures of Ti-B20 titanium alloy GE Peng(葛 鹏)1,2, ZHAO Yong-qing(赵永庆)1, ZHOU Lian(周 廉)1 1. Northwest Institute for Non-ferrous Metal Research, Xi’an 710016, China; 2. School of Materials Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, China Received 28 July 2006; accepted 15 September 2006 Abstract: A new metastable beta titanium alloy of Ti......
基于组织均匀性目标的TC4合金盘形件等温成形工艺优化 黄永胜1,张李骊2,李付国2,彭富华1,陈希凯2 (1.成都飞机工业公司,成都,610092;2.西北工业大学材料学院,西安,710072) 摘要:采用有限元数值模拟虚拟试验方法,以终锻件组织均匀性为目标,研究了TC4合金盘形件等温成形过程,为锻造工艺参数的优化提供了一条从虚拟试验-回归模型-优化设计的新思路.根据锻造工艺参数与组织均匀性之间的关系,结合建立的回归模型,采用单纯形优化算法对TC4合金盘形件等温锻造成形工艺参数进行了优化.采用优化后的工艺参数模拟了等温锻造成形过程,结果表明,锻后组织分布均匀,优化效果显著. 关键词:TC4合金; 虚拟试验; 优化设计; 单纯形法; [全文内容正在添加中] ......
