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

Year: 2011

Type: article

Abstract: 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.

Source: Applied Mechanics and Materials

DOI: 10.4028/www.scientific.net/amm.109.3

Authors: Shao Qiang Yuan, Guo Li Liang, Hui Bin Wu

Institutions: University of Science and Technology Beijing, Tangshan College

Language: English

Topic: Microstructure and Mechanical Properties of Steels

Subfield: Mechanical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: hybrid

Funder: Steel and Iron Foundation of Hebei Province

OpenAlex ID: W2091157528

FWCI:

Cites: 5

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Related to: 10