Effect of Solid Solution Treatment on Microstructure and Mechanical Properties of DS Superalloy DZ8

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Effect of Solid Solution Treatment on Microstructure and Mechanical Properties of DS Superalloy DZ8

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ZHANG Shuaiqi / ZONG Cui / CHEN Shengping / ZHAO Wenxia / ZHANG Hongwei / ZHANG Qiang / TAN Yongning

The microstructure of DZ8 after solid solution treatment at 1260 ℃ and 1240 ℃ was observed, and the tensile and stress rupture properties were compared. The results show that less than 1% γ+γ' eutectic remains in the microstructure of DZ8 after solid solution treatment at 1260 ℃, while incipient melting takes place in the Hf-rich phase; about 12% γ+γ' eutectic exists in the microstructure of DZ8 after solid solution treatment at 1240 ℃, but no incipient melting phase is discovered. After solid solution treatment at 1260 ℃, the stress rupture property of DZ8 in 980 ℃/725 MPa and the tensil property of DZ8 at room temperature, 700 ℃ and 980 ℃ show little different compared with those treated at 1240 ℃, but the stress rupture property in 760 ℃/725 MPa decreases to some extent.

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Title :

Effect of Solid Solution Treatment on Microstructure and Mechanical Properties of DS Superalloy DZ8

Contributors:

ZHANG Shuaiqi (author) / ZONG Cui (author) / CHEN Shengping (author) / ZHAO Wenxia (author) / ZHANG Hongwei (author) / ZHANG Qiang (author) / TAN Yongning (author)

Published in:

Journal of Aeronautical Materials, Vol 36, Iss 4, Pp 10-15 (2016)

Publication date :

2016

ISSN :

1005-5053

DOI :

https://doi.org/10.11868/j.issn.1005-5053.2016.4.002

Type of media :

Article (Journal)

Type of material :

Electronic Resource