In-situ joining of carbon fiber reinforced silicon carbide composite to Ni-based single-crystal superalloy by active unidirectional casting technology

Fu Wang; Lingfeng Qu; Jing Wang; Yingxing Wang; Yazhou Li; Qiang Yang; Yunsong Zhao; Dichen Li; Zhanyi Zheng

Materials & Design (Dec 2023)

In-situ joining of carbon fiber reinforced silicon carbide composite to Ni-based single-crystal superalloy by active unidirectional casting technology

Fu Wang,
Lingfeng Qu,
Jing Wang,
Yingxing Wang,
Yazhou Li,
Qiang Yang,
Yunsong Zhao,
Dichen Li,
Zhanyi Zheng

Affiliations

Fu Wang: State Key Laboratory for Manufacturing System Engineering, School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, P R China; Corresponding author.
Lingfeng Qu: State Key Laboratory for Manufacturing System Engineering, School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, P R China
Jing Wang: State Key Laboratory for Manufacturing System Engineering, School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, P R China
Yingxing Wang: State Key Laboratory for Manufacturing System Engineering, School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, P R China
Yazhou Li: State Key Laboratory for Manufacturing System Engineering, School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, P R China
Qiang Yang: State Key Laboratory for Manufacturing System Engineering, School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, P R China
Yunsong Zhao: Science and Technology on Advanced High Temperature Structural Materials laboratory, Beijing Institute of Aeronautical Materials, Beijing 100095, PR China
Dichen Li: State Key Laboratory for Manufacturing System Engineering, School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, P R China
Zhanyi Zheng: Shenyang Engine Research Institute, Aero Engine Corporation of China, Shenyang 110015, PR China

Journal volume & issue: Vol. 236
p. 112521

Abstract

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Aiming to join large-scale Cf/SiC with a complex joining structure to SC CMSX-6 superalloy, a novel active unidirectional casting technology was developed to in-situ form a joint with satisfactory bonding strength. The integrity of the single crystal (SC), interfacial structure, phase formation, and high-temperature mechanical property were studied. The results demonstrated successful formation of a complete CMSX-6 SC structure with a crystallographic orientation deviation of 13.2° from the (001) direction, joined with Cf/SiC. A gradient reaction interlayer composed of γ/γ΄ matrix, AlN, Cr3C2, and TiMoC2 phases was formed. The maximum tear strength of the joining interface reached 32.9 MPa at 750 °C, approximately 2.5 times larger than the interlaminar bonding strength of Cf/SiC. This satisfactory mechanical property was attributed to the pinning effect resulting from the infiltration of molten CMSX-6 into Cf/SiC and reduced thermal stresses facilitated by the formed gradient bonding interface.

Published in Materials & Design

ISSN: 0264-1275 (Print); 1873-4197 (Online)
Publisher: Elsevier
Country of publisher: United Kingdom
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://www.journals.elsevier.com/materials-and-design

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