Effects of hydrogen on diffusion bonding of TiAl-based intermetallics using hydrogenated Ti6Al4V interlayer

被引：26
作者：
He, P. [1 ]
Fan, L. [2 ]
Liu, H. [1 ]
Feng, J. C. [1 ]
机构：
[1] Harbin Inst Technol, Natl Key Lab Adv Welding Prod Technol, Harbin 150001, Peoples R China
[2] Yellow River Conservancy Tech Inst, Dept Mechatron Engn, Kaifeng 475003, Peoples R China
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2010年 / 35卷 / 24期
基金：
中国国家自然科学基金;
关键词：
TiAl-based intermetallics; Hydrogenated Ti6Al4V interlayer; Diffusion bonding; Microstructure; GAMMA-TITANIUM ALUMINIDES; GRAIN-REFINEMENT; ALLOYS; MICROSTRUCTURE; DEFORMATION; TI-6AL-4V;
D O I：
10.1016/j.ijhydene.2010.09.040
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The diffusion bonding of TiAl-based intermetallics using the hydrogenated Ti6Al4V interlayer was carried out. The results were investigated by SEM, EPMA, XRD and TG/DSC. According to the experimental observations, the reaction layer of diffusion bonding using the hydrogenated Ti6Al4V interlayer containing 0.5 wt% hydrogen formed at 850 degrees C for 15 min under a pressure of 15 MPa, and the shear strength of the joint was up to 290 MPa. Compared with the direct diffusion bonding of TiAl-based intermetallics, the bonding parameters obviously decreased. Particularly, the bonding temperature decreased by 350 degrees C, the holding time decreased by 45 mm, and the bonding pressure decreased by 15 Mpa. The diffusion bonding of TiAl-based intermetallics at a low temperature was achieved. The dehydrogenated process and the reaction mechanism were also discussed. Crown Copyright (C) 2010 Published by Elsevier Ltd on behalf of Professor T. Nejat Veziroglu. All rights reserved.
引用
收藏
页码：13317 / 13321
页数：5
相关论文
共 21 条
[1]   Microstructure and deformation of two-phase γ-titanium aluminides [J].
Appel, F ;
Wagner, R .
MATERIALS SCIENCE & ENGINEERING R-REPORTS, 1998, 22 (05) :187-268
[2]  
BAESLACK WA, 1989, WELD J RES S, pS483
[3]  
Chesnutt J, 1990, MET MATER, V6, P509
[4]  
DAVID SA, 1990, WELD J RES S, V4, pS133
[5]   Positive effects of hydrogen in metals [J].
Eliezer, D ;
Eliaz, N ;
Senkov, ON ;
Froes, FH .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2000, 280 (01) :220-224
[6]   Effects of hydrogen on diffusion bonding of hydrogenated Ti6Al4V alloy containing 0.3 wt% hydrogen at fast heating rate [J].
Feng, J. C. ;
Liu, H. ;
He, P. ;
Cao, J. .
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2007, 32 (14) :3054-3058
[7]  
He P, 2002, T NONFERR METAL SOC, V12, P1069
[8]   THE EFFECT OF HYDROGEN AS A TEMPORARY ALLOYING ELEMENT ON THE MICROSTRUCTURE AND TENSILE PROPERTIES OF TI-6AL-4V [J].
KERR, WR .
METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1985, 16 (06) :1077-1087
[9]  
KIM YW, 1994, JOM-J MIN MET MAT S, V46, P30, DOI 10.1007/BF03220745
[10]   PROGRESS IN THE UNDERSTANDING OF GAMMA TITANIUM ALUMINIDES [J].
KIM, YW ;
DIMIDUK, DM .
JOM-JOURNAL OF THE MINERALS METALS & MATERIALS SOCIETY, 1991, 43 (08) :40-47
123