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测定了各种氢含量对Ti-6Al-4V合金的流变应力(σ),应变速率敏感指数(m)和延伸率(δ)的影响,并对其微观结构进行了观察研究。结果表明,适量的氢对该合金在800—860℃范围内具有减少流变应力和降低超塑温度以及增加塑性的作用。

关键词: 氢 , Ti-6Al-4V alloy , strain rate sensitivity , high temperature superplasticity , microstructure

超塑性变形Ti-6Al-4V合金中接近重位点阵取向α晶界滑动机制的TEM研究

用TEM 研究了超塑性变形Ti_(-6)Al_(-4)V 合金中接近重位点阵取向(near-CSL)的α晶界,发现在部分晶界上晶界位错(GBD:)的衍衬象变得漫散,但仍然保持线状特征;某些GBD 有局部的分解和束集反应;在α晶界与晶内亚结构的交界处,GBS 通过束集反应形成新的组态;构成晶界坎的各个...

关键词: 超塑性 , Ti-6Al-4V alloy , grain boundary sliding

DEVELOPMENT OF CONSTITUTE EQUATIONS FOR Ti-6Al-4V ALLOY UNDER HOT-WORKING CONDITION

L. X. Li and D. S. Peng (Department of Materials Science and Engineering , Central SouthUniversity of Technology , Changsha 410083 , China)

金属学报(英文版)

The deformaton behavior of Ti - 6Al - 4V alloy under hot - working condition has been studied by compression testing in the temperature range 750 - 950℃ and strain rate range 0.05 - 15s -1. The flow stress decreases with the increase of temperature and with the decrease of strain rate. After a ste...

关键词: Ti-6Al-4V alloy , null , null

Superplastic Forming and Diffusion Bonding for Sandwich Structure of Ti-6Al-4V Alloy

Wenbo HAN , Kaifeng ZHANG , Guofeng WANG , Xiaojun ZHANG

材料科学技术（英文）

Superplastic forming and diffusion bonding (SPF/DB) is a well-established process for the manufacture of components almost exclusively from Ti-6Al-4V sheet material. The sandwich structure of Ti-6Al-4V alloy is investigated. The effects of the microstructure on the SPF/DB process were discussed. The...

关键词: Superplastic forming , null , null , null

STRUCTURE OF HYDRIDES IN HIGHLY HYDROGENATED Ti-6Al-4V ALLOY

ZHANG Caibei BIAN Weimin LAI Zuhan GONG Bo Northeast University of Technology , Shenyang , China

金属学报(英文版)

The microstrueture and various hydrides precipitated in Ti-6A1-4V alloys containing hydrogen 0.16,0.58,0.87,1.49 wt-%,respectively,have been studied by means of TEM and X-ray diffraction.The Ti_3Al phase may precipitate when H over 0.58 wt-%.In the same time,the morphology of hydrides gradually chan...

关键词: titanium hydride , null , null , null

EFFECT OF HYDROGEN ON HIGH TEMPERATURE PLASTICITY OF Ti-6Al-4V ALLOY

XU Zhensheng GONG Bo ZHANG Caibei LAI Zuhan Northeast University of Technology , Shenyang , China

金属学报(英文版)

The effects of various hydrogen contents on the flow stress(σ),strain rate sensitivity expo- nent(m)and the tensile elongation(δ)of Ti-6Al-4V alloy were studied.The microstructure of the alloy was also investigated.The results indicate that,a suitable amount of hydrogen in the alloy can reduce the f...

关键词: Hydrogen , null , null , null

Laser Surface Modification of Ti-6Al-4V with Addition of Pr

CHE Chengwei ZHANG Zhiming DONG Xianglin LIU Chengliang Harbin Institute of Technology , Harbin , 150006 , ChinaInstitute of Metal Research , Academia Sinica Shenyang , 110015 , China

材料科学技术（英文）

The behaviour of oxidation at elevated tem- peratures and fretting in the laser-alloyed layer of Ti-6Al-4V with the addition of Pr was studied. The results show that the addition of Pr changes the structure of oxide scale of Ti-6Al-4V,controls the short-range diffusion of oxygen to the scale/substra...

关键词: laser modification , null , null , null

考虑微小结构相互作用的钛及Ti-6Al-4V真应力-真应变曲线解析解

王学滨 , 杨梅 , 赵扬锋

稀有金属材料与工程

采用能描述非均质性的具有内部长度的梯度塑性理论推导了颈缩区域的非均匀的塑性拉伸应变.描述了颈缩区域的外形轮廓,并计算了当颈缩区域的体积保持不变时的颈缩区域的塑性伸长.由于外形轮廓已被确定,因而导出了真应力的表达式.目前得到的关于真应力-真应变曲线解析解的优越性在于:所需要的参数具有明确的物理意义,如...

关键词: 真应力-真应变曲线 , 微结构 , 钛 , Ti-6Al-4V合金 , 尺寸效应 , 颈缩 , 应变局部化

Research on Laser Direct Deposition Process of Ti-6Al-4V Alloy

S.Y. Gao , Y.Z. Zhang , L.K. Shi , B.L. Du , M.Z. Xi , H.Z. Ji , null , null , null , null , null , null , null , null , null , null , null

金属学报(英文版)

Laser direct deposition (LDD) of metallic components is an advanced technology of combining CAD/CAM (computer aided design/computer aided manufacturing), high power laser, and rapid prototyping. This technology uses laser beam to melt the powders fed coaxially into the molten pool by the laser beam ...

关键词: laser direct deposition , null , null

Effect of Triple Annealing Treatment on Stress Relaxation of Ti-6Al-4V Alloy

Yong LIU , Jingchuan ZHU , Zhongda YIN , Mingwei LI

材料科学技术（英文）

The effect of triple annealing on stress relaxation of Ti-6Al-4V alloy as well as the microstructure after stress relaxation were studied. The results showed that triple annealing treatment enhanced the resistance of stress relaxation performance, and when the temperature was rising, this effect bec...

关键词: Triple annealing , null , null

材料期刊网

氢对Ti-6Al-4V合金的高温增塑作用

超塑性变形Ti-6Al-4V合金中接近重位点阵取向α晶界滑动机制的TEM研究

DEVELOPMENT OF CONSTITUTE EQUATIONS FOR Ti-6Al-4V ALLOY UNDER HOT-WORKING CONDITION

Superplastic Forming and Diffusion Bonding for Sandwich Structure of Ti-6Al-4V Alloy

STRUCTURE OF HYDRIDES IN HIGHLY HYDROGENATED Ti-6Al-4V ALLOY

EFFECT OF HYDROGEN ON HIGH TEMPERATURE PLASTICITY OF Ti-6Al-4V ALLOY

Laser Surface Modification of Ti-6Al-4V with Addition of Pr

考虑微小结构相互作用的钛及Ti-6Al-4V真应力-真应变曲线解析解

Research on Laser Direct Deposition Process of Ti-6Al-4V Alloy

Effect of Triple Annealing Treatment on Stress Relaxation of Ti-6Al-4V Alloy

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