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HomeSolid State PhenomenaSolid State Phenomena Vol. 184Internal Friction Study of the Influence of Deep...

Internal Friction Study of the Influence of Deep Cryogenic Treatment on the Microstructure of a Bainitic Steel

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Abstract:

The influence of deep cryogenic treatment (DCT) on the microstructure of a bainitic steel is investigated by means of internal friction and transmission electron microscopy (TEM). Two relaxation peaks (P_c1 and P_c2) are observed during cooling and one relaxation peak (P_h) during heating from 100 to 320K. Peak P_c1 may be related to dislocation pinning. Peak P_h is attributed to dislocation-carbon atoms interaction. The decreasing of peak P_h after cycles deep cryogenic cooling indicates that soaking time under the deep cryogenic temperature is not contributed to the precipitation of carbides, while the cycles cryogenic treatment lead to more fine carbides precipitation.

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Internal Friction and Mechanical Spectroscopy

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Periodical:

Solid State Phenomena (Volume 184)

Pages:

239-244

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.184.239

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Online since:

January 2012

Authors:

Na Min, Tian Yu Ji, Li Juan Zhu, Xiao Chun Wu, Hong Bin Wang

Keywords:

Bainitic Steel, Deep Cryogenic Treatment, Dislocation, Internal Friction

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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