Investigation on Dissolving and Strain Induced Precipitation Behavior in Nb-Bearing Microalloyed Steel

Abstract:

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Thermal simulation test, TEM(Transmission Electron Microscope) and nanobeam EDS techniques were used to investigate the dissolving and precipitation behavior in Nb-bearing mciroalloyed steel. The experimental results indicate that: there are two families of precipitates in the as forged samples. The larger precipitates of Nb(C,N) disappear after being held for 2h at 1300°C,while the inclusions of MnS formed from the solidification even remain for 48h held at that temperature. After 30% of predeformtion at 850°C and 900°C, the strain-induced precipitation occurs, that is, the other tiny precipitates. Compared with the samples relaxed at 850°C, the ones that are held at 900°C show larger particles by same holding time but demonstrate the same size when the relaxation time reaches 1000s.

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Periodical:

Edited by:

Yongping Zhang, Linhua Zhou and Elwin Mao

Pages:

3-6

DOI:

10.4028/www.scientific.net/AMM.109.3

Citation:

S. Q. Yuan et al., "Investigation on Dissolving and Strain Induced Precipitation Behavior in Nb-Bearing Microalloyed Steel", Applied Mechanics and Materials, Vol. 109, pp. 3-6, 2012

Online since:

October 2011

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$35.00

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