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HomeMaterials Science ForumMaterials Science Forum Vol. 1013Stress Relaxation Behavior of GH4169 Alloy

Stress Relaxation Behavior of GH4169 Alloy

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Abstract:

The relaxation properties of GH4169 alloy were studied contrastively at temperatures ranging from 600^oC to 700 °C and initial stress ranging from 550 MPa to 850 MPa. The relationship between the microstructure and relaxation behavior was evaluated using transmission electron microscopy techniques. It was found that the relaxation limit and relaxation stability of the alloy decreased obviously with the increase of temperature. Further investigations show that the relaxation behavior is mainly depend on both precipitate characteristics and its interaction with dislocations. The alloy with higher strength lever has more excellent stress relaxation stability, because of the inhibition of a large number subgrains on dislocations motion.

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Periodical:

Materials Science Forum (Volume 1013)

Pages:

52-58

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.1013.52

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Online since:

October 2020

Authors:

Xu Dong Lu*, Song Yi Shi, Bo Wen, Ya Wei Zhang, Jin Hui Du

Keywords:

Dislocation Motion, Relaxation Limit, Stress Relaxation, Subgrain

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© 2020 Trans Tech Publications Ltd. All Rights Reserved

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