Combustion joining of carbon-carbon composites to TiAl intermetallics using a Ti-Al-C powder composite interlayer

被引：34
作者：
Cao, Jian [1 ]
Li, Chun [2 ]
Qi, Junlei [1 ]
Shi, Yanli [1 ]
Feng, Jicai [1 ]
机构：
[1] Harbin Inst Technol, State Key Lab Adv Welding & Joining, Harbin 150001, Peoples R China
[2] Univ Manchester, Sch Mat, Manchester M13 9PL, Lancs, England
来源：
COMPOSITES SCIENCE AND TECHNOLOGY | 2015年 / 115卷
基金：
中国国家自然科学基金;
关键词：
Carbon fibers; Intermetallics; Interface; Mechanical properties; Welding/joining; CARBON/CARBON COMPOSITES; MECHANICAL-PROPERTIES; THERMAL-EXPANSION; ELECTRIC-FIELD; C/C COMPOSITE; BRAZED JOINTS; ALLOY; TITANIUM; MICROSTRUCTURES; OXIDATION;
D O I：
10.1016/j.compscitech.2015.05.001
中图分类号：
TB33 [复合材料];
学科分类号：
摘要：
To meet the requirements of energy-efficiency and high-quality joining between C/C composites and TiAl intermetallics in the aerospace field, a novel combustion joining method was developed for joining these two materials. In this method, a composite interlayer that consisted of a Ti-Al-C powder mixture and an Ag-Cu-Ti filler foil was employed. The effect of the reactant compositions and preheating temperature on the adiabatic temperature was calculated. Based on the calculated results, the composition of the Ti-Al-C reactants was selected. The joint microstructure was characterized using scanning electron microscopy (SEM), energy dispersive spectrometry (EDS) and X-ray diffraction (XRD). The results showed the presence of a TiC layer on the carbon-carbon composite side and Ti-Al-Cu layers on the TiAl side. The shear strength of the joint was tested to evaluate the joint quality. The joint strength reached a maximum value of 17.6 MPa when the interlayer thickness was 500 pm and m = 1.1. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：72 / 79
页数：8
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