Effect of brazing temperature on microstructure and mechanical properties of 2D Cf/SiC and Nb joints brazed with Co-Ti-Nb filler alloy

Jie Zhang; Qiang Zhang; Chunfeng Liu; Guochao Wang; Yinhua Xuan

doi:10.1016/j.msea.2015.03.013

Effect of brazing temperature on microstructure and mechanical properties of 2D C_f/SiC and Nb joints brazed with Co-Ti-Nb filler alloy

Jie Zhang^*
, Qiang Zhang
, Chunfeng Liu
, Guochao Wang
, Yinhua Xuan

^*Corresponding author for this work

Harbin Institute of Technology
Ltd.

Research output: Contribution to journal › Article › peer-review

44 Scopus citations

Abstract

A novel high-temperature filler alloy, Co42.5Ti42.5Nb15 (at%) developed with which C_f/SiC-Nb joints were successfully obtained at 1553-1613K for 10min. The effects of brazing temperature on the microstructure and mechanical properties of the joints were investigated. The results show that the typical C_f/SiC and Nb joint consist of C_f/SiC composite/(Ti,Nb)C reaction layer/(Ti,Nb)₂Co layer/Nb[Ti,Co]+(Ti,Nb)Co eutectics with some CoNb₄Si compounds/Nb substrates. With increasing the brazing temperature, both the thickness of the reaction layers and the content of CoNb₄Si in the brazing layer increased, whereas the thickness of the brazing layer reduced. The shear strength presented a peak value of 187MPa from a brazed at 1593K.

Original language	English
Pages (from-to)	116-122
Number of pages	7
Journal	Materials Science and Engineering: A
Volume	634
DOIs	https://doi.org/10.1016/j.msea.2015.03.013
State	Published - 4 May 2015
Externally published	Yes

Keywords

Brazing
C/SiC composite
Co-Ti-Nb filler alloy
Mechanical properties
Microstructure

Access to Document

10.1016/j.msea.2015.03.013

Cite this

@article{1b89dad7a55b48d9aaaa8002d3901808,

title = "Effect of brazing temperature on microstructure and mechanical properties of 2D Cf/SiC and Nb joints brazed with Co-Ti-Nb filler alloy",

abstract = "A novel high-temperature filler alloy, Co42.5Ti42.5Nb15 (at\%) developed with which Cf/SiC-Nb joints were successfully obtained at 1553-1613K for 10min. The effects of brazing temperature on the microstructure and mechanical properties of the joints were investigated. The results show that the typical Cf/SiC and Nb joint consist of Cf/SiC composite/(Ti,Nb)C reaction layer/(Ti,Nb)2Co layer/Nb[Ti,Co]+(Ti,Nb)Co eutectics with some CoNb4Si compounds/Nb substrates. With increasing the brazing temperature, both the thickness of the reaction layers and the content of CoNb4Si in the brazing layer increased, whereas the thickness of the brazing layer reduced. The shear strength presented a peak value of 187MPa from a brazed at 1593K.",

keywords = "Brazing, C/SiC composite, Co-Ti-Nb filler alloy, Mechanical properties, Microstructure",

author = "Jie Zhang and Qiang Zhang and Chunfeng Liu and Guochao Wang and Yinhua Xuan",

note = "Publisher Copyright: {\textcopyright} 2015 Elsevier B.V.",

year = "2015",

month = may,

day = "4",

doi = "10.1016/j.msea.2015.03.013",

language = "英语",

volume = "634",

pages = "116--122",

journal = "Materials Science and Engineering: A",

issn = "0921-5093",

publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - Effect of brazing temperature on microstructure and mechanical properties of 2D Cf/SiC and Nb joints brazed with Co-Ti-Nb filler alloy

AU - Zhang, Jie

AU - Zhang, Qiang

AU - Liu, Chunfeng

AU - Wang, Guochao

AU - Xuan, Yinhua

PY - 2015/5/4

Y1 - 2015/5/4

N2 - A novel high-temperature filler alloy, Co42.5Ti42.5Nb15 (at%) developed with which Cf/SiC-Nb joints were successfully obtained at 1553-1613K for 10min. The effects of brazing temperature on the microstructure and mechanical properties of the joints were investigated. The results show that the typical Cf/SiC and Nb joint consist of Cf/SiC composite/(Ti,Nb)C reaction layer/(Ti,Nb)2Co layer/Nb[Ti,Co]+(Ti,Nb)Co eutectics with some CoNb4Si compounds/Nb substrates. With increasing the brazing temperature, both the thickness of the reaction layers and the content of CoNb4Si in the brazing layer increased, whereas the thickness of the brazing layer reduced. The shear strength presented a peak value of 187MPa from a brazed at 1593K.

AB - A novel high-temperature filler alloy, Co42.5Ti42.5Nb15 (at%) developed with which Cf/SiC-Nb joints were successfully obtained at 1553-1613K for 10min. The effects of brazing temperature on the microstructure and mechanical properties of the joints were investigated. The results show that the typical Cf/SiC and Nb joint consist of Cf/SiC composite/(Ti,Nb)C reaction layer/(Ti,Nb)2Co layer/Nb[Ti,Co]+(Ti,Nb)Co eutectics with some CoNb4Si compounds/Nb substrates. With increasing the brazing temperature, both the thickness of the reaction layers and the content of CoNb4Si in the brazing layer increased, whereas the thickness of the brazing layer reduced. The shear strength presented a peak value of 187MPa from a brazed at 1593K.

KW - Brazing

KW - C/SiC composite

KW - Co-Ti-Nb filler alloy

KW - Mechanical properties

KW - Microstructure

UR - https://www.scopus.com/pages/publications/84925940339

U2 - 10.1016/j.msea.2015.03.013

DO - 10.1016/j.msea.2015.03.013

M3 - 文章

AN - SCOPUS:84925940339

SN - 0921-5093

VL - 634

SP - 116

EP - 122

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

ER -

Effect of brazing temperature on microstructure and mechanical properties of 2D C_f/SiC and Nb joints brazed with Co-Ti-Nb filler alloy

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this