Influence of process parameters on microstructure and properties of IC10 single crystal TLP joints

CHAI Lu, HOU Jinbao, ZHANG Sheng

doi:10.12073/j.hjxb.2018390212

TRANSACTIONS OF THE CHINA WELDING INSTITUTION > 2018 > 39(8): 114-118. > DOI: 10.12073/j.hjxb.2018390212

CHAI Lu, HOU Jinbao, ZHANG Sheng. Influence of process parameters on microstructure and properties of IC10 single crystal TLP joints[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2018, 39(8): 114-118. DOI: 10.12073/j.hjxb.2018390212

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Influence of process parameters on microstructure and properties of IC10 single crystal TLP joints

CHAI Lu, HOU Jinbao, ZHANG Sheng

Aeronautical Key Laboratory for Welding and Joining Technologies, AVIC Manufacturing Technology Institute, Beijing 100024, China

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Received Date: April 10, 2017

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Abstract

IC10 single crystal superalloy was TLP bonded at 1 240℃ using nickel base amorphous foils, KNi3A. Microstructures of joints bonded with different parameters were studied using scanning electron microscopy. High temperature tensile test and creep rupture property test were performed. Results revealed that, joints with 0.04 mm gap bonded at 1 240℃ for 10 hours share similar microstructure with base metal and have excellent mechanical properties. When it comes to joints with 0.04 mm gap bonded for 6 hours or joints with 0.08 mm gap bonded for 10 hours, there were eutectics and compounds in the joints and the property weaken sharply due to a not completed isothermal solidification.
- single crystal superalloy,
- transient liquid phase diffusion bonding,
- microstructure,
- property

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