Interfacial Microstructure and Properties of Ti53311S Titanium Alloy Joints Brazed Using TiZrNiCu Filler Metal

被引：0
|
作者：
Song Xiaoguo [1 ]
Cao Jian [1 ]
Li Zhaoguang [2 ]
Zhang Zhiwei [2 ]
Feng Jicai [1 ]
机构：
[1] Harbin Inst Technol Weihai, Weihai 264209, Peoples R China
[2] Beijing Inst Controlling Engn, Beijing 100090, Peoples R China
来源：
RARE METAL MATERIALS AND ENGINEERING | 2013年 / 42卷 / 08期
关键词：
Ti53311S alloy; TiZrNiCu filler metal; interfacial microstructure; mechanical property; brazing; DEFORMATION; INDUSTRY;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Ti53311S high-temperature titanium alloy was brazed using TiZrNiCu filler metal. The interfacial microstructure was characterized by SEM, EDS and Micro-focus XRD. Effects of the brazing temperature on the interfacial microstructure and mechanical properties of the joints were investigated. The results show that the typical interfacial microstructure is Ti53311S/alpha+beta/(Ti, Zr)(2)(Cu, Ni) compounds/alpha+beta/Ti53311S. The content of brittle (Ti,Zr)(2)(Cu,Ni) compounds decreases with the temperature increasing and the lamellar alpha+beta microstructure is formed when the brazing temperature exceeds the transformation temperature of alpha+beta ->beta. Tensile strength of joints increases gradually at first and then tends to be stable with the increase of brazing temperature. The highest tensile strength of 912.8 MPa is obtained when the specimens are brazed at 1010 degrees C for 10 min. Fracture analysis indicates that the joints fracture at brazing seam showing lots of cleavage planes on the fracture surfaces.
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页码：1694 / 1698
页数：5
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