An Innovative Joint Structure for Brazing Cf/SiC Composite to Titanium Alloy

被引：42

作者：

Hernandez, X. ^{[1
]}

Jimenez, C. ^{[1
]}

Mergia, K. ^{[2
]}

Yialouris, P. ^{[2
]}

Messoloras, S. ^{[2
]}

Liedtke, V. ^{[3
]}

Wilhelmi, C. ^{[4
]}

Barcena, J. ^{[1
]}

机构：

[1] TECNALIA Res & Innovat, San Sebastian 20009, Spain

[2] Natl Ctr Sci Res Demokritos, Inst Radiol Sci Energy Technol & Safety, Athens 15310, Greece

[3] Aerosp & Adv Composites GmbH, A-2700 Wiener Neustadt, Austria

[4] AIRBUS Grp Innovat, D-81663 Munich, Germany

来源：

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2014年 / 23卷 / 08期

关键词：

aerospace; brazing; ceramic matrix composites; electron microscopy; joining; mechanical test; optical microscopy; metallography; titanium; CERAMIC-MATRIX COMPOSITES; C/SIC COMPOSITES; TI-6AL-4V ALLOY; TI; MICROSTRUCTURE;

D O I：

10.1007/s11665-014-1074-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In view of aerospace applications, an innovative structure for joining a Ti alloy to carbon fiber reinforced silicon carbide has been developed. This is based on the perforation of the CMC material, and this procedure results in six-fold increase of the shear strength of the joint compared to the unprocessed CMC. The joint is manufactured using the active brazing technique and TiCuAg as filler metal. Sound joints without defects are produced and excellent wetting of both the composite ceramic and the metal is observed. The mechanical shear tests show that failure occurs always within the ceramic material and not at the joint. At the CMC/filler, Ti from the filler metal interacts with the SiC matrix to form carbides and silicides. In the middle of the filler region depletion of Ti and formation of Ag and Cu rich regions are observed. At the filler/Ti alloy interface, a layered structure of the filler and Ti alloy metallic elements is formed. For the perforation to have a significant effect on the improvement of the shear strength of the joint appropriate geometry is required.

引用

页码：3069 / 3076

页数：8

共 19 条

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