Microstructure and mechanical properties of Ti2AlNb alloy and C/C composite joints brazed with Ag–Cu–Zn and Ag–Cu–Zn/Cu/Ag–Cu–Ti filler metals

• Autorzy: Hao Zhitao , Wang Dongpo , Yang Zhenwen , Wang Ying

Identyfikatory

DOI

10.1016/j.acme.2019.04.008

• Języki publikacji: EN

Abstrakty

EN

C/C composite was successfully joined to Ti2AlNb alloy with inactive filler metal, Ag–Cu–Zn filler. In addition, a designed composite interlayer, Ag–Cu–Zn/Cu/Ag–Cu–Ti, was used to improve the properties of brazed joints. AlCu2Ti compound blocks were formed in brazing seam and the double reaction layers adjacent to C/C composite were AlCu2Ti and TiC when Ag–Cu–Zn filler was used to join C/C composite and Ti2AlNb. With the increase of brazing temperature and time, the amount of AlCu2Ti compound blocks increased and tended to accumulate together nearby the C/C composite, the double reaction layers thickened as well. In order to avoid the serious accumulation of brittle AlCu2Ti compound nearby C/C com-posite, Cu foil was added between the Ag–Cu–Zn filler and Ti2AlNb. Soft Cu but not brittle AlCu2Ti existed nearby the C/C composite with the addition of Cu foil, which is beneficial for the relief of residual stress near the C/C composite, and the shear strength of joint improved obviously. With the barrier of Cu foil, the thickness of reaction layers adjacent to C/C composite could be controlled easily by the addition of Ag–Cu–Ti foil. Correspondingly, the shear strength of this joint reached at 28 MPa, which was close to that of C/C itself.

Słowa kluczowe

EN

brazing; Ti2AlNb alloy; C/C composite; microstructure; mechanical properties

PL

mosiądz; stop Ti2AlNb; mikrostruktura; właściwości mechaniczne

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2019
• Tom: Vol. 19, no. 4
• Strony: 1083--1094
• Opis fizyczny: Bibliogr. 21 poz., rys., tab., wykr.

Twórcy

autor

Hao Zhitao

• Tianjin Key Lab of Advanced Joining Technology, School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China

autor

Wang Dongpo

• Tianjin Key Lab of Advanced Joining Technology, School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China

autor

Yang Zhenwen

• Tianjin Key Lab of Advanced Joining Technology, School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China

autor

Wang Ying

• Tianjin Key Lab of Advanced Joining Technology, School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China

Bibliografia

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Uwagi

PL

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020)