Evolution of Microstructure, Mechanical Properties and Corrosion Resistance of Ultrasonic Assisted Welded-Brazed Mg/Ti Joint

被引：36
作者：
Xu, Chuan [1 ]
Sheng, Guangmin [1 ]
Cao, Xuezhen [1 ]
Yuan, Xinjian [1 ]
机构：
[1] Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400044, Peoples R China
来源：
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY | 2016年 / 32卷 / 12期
基金：
中国国家自然科学基金;
关键词：
Magnesium alloy; Titanium alloy; Microstructure; Mechanical properties; Corrosion resistance; Ultrasonic vibration; LAP JOINTS; AZ91; ALLOY; MAGNESIUM;
D O I：
10.1016/j.jmst.2016.08.029
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Ultrasonic vibration with different powers from 0 kW to 1.6 kW was applied during the tungsten inert gas welding-brazing of Mg/Ti. The microstructures, mechanical properties and corrosion resistance of the ultrasonic assisted tungsten inert gas (U-TIG)welded-brazed Mg/Ti joint were characterized. The results showed that, without being subjected to ultrasonic vibration, coarse columnar alpha-Mg grains occurred in the fusion zone of Mg/Ti joint. However, with ultrasonic power of 1.2 kW, the average grain size of columnar alpha-Mg grains was refined from 200 gm to about 50 mu m and the tensile strength of joints increased similar to 18% up to 228 MPa. Besides, high fraction of grain boundaries was introduced by grain refinement, contributing to improve the corrosion resistance in two ways: (i) accelerating the formation of Mg(OH)(2) protective layer and (ii) reducing the mismatch and disorder between Mg(OH)(2) protective layer and Mg alloy surface. Copyright (C) 2016, The editorial office of Journal of Materials Science & Technology. Published by Elsevier Limited.
引用
收藏
页码：1253 / 1259
页数：7
相关论文
共 16 条
[1]   Effect of alloying elements on interface microstructure of Mg-Al-Zn magnesium alloys and titanium joint by friction stir welding [J].
Aonuma, Masayuki ;
Nakata, Kazuhiro .
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS, 2009, 161 (1-3) :46-49
[2]   Effects of grain size on the corrosion resistance of wrought magnesium alloys containing neodymium [J].
Argade, G. R. ;
Panigrahi, S. K. ;
Mishra, R. S. .
CORROSION SCIENCE, 2012, 58 :145-151
[3]   Effect of grain size and twins on corrosion behaviour of AZ31B magnesium alloy [J].
Aung, Naing Naing ;
Zhou, Wei .
CORROSION SCIENCE, 2010, 52 (02) :589-594
[4]   Grain character influences on corrosion of ECAPed pure magnesium [J].
Birbilis, N. ;
Ralston, K. D. ;
Virtanen, S. ;
Fraser, H. L. ;
Davies, C. H. J. .
CORROSION ENGINEERING SCIENCE AND TECHNOLOGY, 2010, 45 (03) :224-230
[5]   Effect of ultrasonic power on microstructure and mechanical properties of AZ91 alloy [J].
Gao, Deming ;
Li, Zhijun ;
Han, Qingyou ;
Zhai, Qijie .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2009, 502 (1-2) :2-5
[6]   Corrosion resistances of amorphous and crystalline Zr-based alloys in simulated seawater [J].
Guo, S. F. ;
Zhang, H. J. ;
Liu, Z. ;
Chen, W. ;
Xie, S. F. .
ELECTROCHEMISTRY COMMUNICATIONS, 2012, 24 :39-42
[7]   A plastic Ni-free Zr-based bulk metallic glass with high specific strength and good corrosion properties in simulated body fluid [J].
Guo, S. F. ;
Liu, Z. ;
Chan, K. C. ;
Chen, W. ;
Zhang, H. J. ;
Wang, J. F. ;
Yu, P. .
MATERIALS LETTERS, 2012, 84 :81-84
[8]   Investigation of corrosion behavior of Mg-steel laser-TIG hybrid lap joints [J].
Liu, Liming ;
Xu, Rongzheng .
CORROSION SCIENCE, 2012, 54 :212-218
[9]   Microstructure and mechanical properties of AZ91 alloy produced with ultrasonic vibration [J].
Liu, Xinbao ;
Osawa, Yoshiaki ;
Takamori, Susumu ;
Mukai, Toshiji .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2008, 487 (1-2) :120-123
[10]   Effect of post weld heat treatment on the microstructure and tensile properties of activated flux TIG welds of Inconel X750 [J].
Ramkumar, K. Devendranath ;
Ramanand, R. ;
Ameer, Ajmal ;
Simon, K. Aghil ;
Arivazhagan, N. .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2016, 658 :326-338
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