RT Journal Article
T1 An innovative joint structure for brazing Cf/SiC composite to titanium alloy
A1 Hernandez, X.
A1 Jiménez, C.
A1 Mergia, K.
A1 Yialouris, P.
A1 Messoloras, S.
A1 Liedtke, V.
A1 Wilhelmi, C.
A1 Barcena, J.
AB 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.
SN 1059-9495
YR 2014
FD 2014-08
LK https://hdl.handle.net/11556/4056
UL https://hdl.handle.net/11556/4056
LA eng
NO Hernandez , X , Jiménez , C , Mergia , K , Yialouris , P , Messoloras , S , Liedtke , V , Wilhelmi , C & Barcena , J 2014 , ' An innovative joint structure for brazing C f /SiC composite to titanium alloy ' , Journal of Materials Engineering and Performance , vol. 23 , no. 8 , pp. 3069-3076 . https://doi.org/10.1007/s11665-014-1074-9
NO This work has been performed within the framework of the European Project ‘‘SMARTEES (Grant Agreement No 262749) with the financial support by the European Community. The paper Fig. 12 Average shear strength of the joints with the different CMC perforation geometries described in Table 1 only reflects the view of the authors and the European Community is not liable for any use of the information contained therein.
DS TECNALIA Publications
RD 30 jul 2024