Acta Metallurgica Sinica (English Letters) >
Effect of Isothermal Temperature on Microstructure and Mechanical Properties of High Al–Low Si TRIP Steel
Received date: 2014-04-09
Revised date: 2014-04-30
Online published: 2014-07-18
In this study, the effect of isothermal temperature on microstructure and mechanical properties of a high Al–low Si TRIP steel was investigated using scanning electron microscopy, transmission electron microscopy, X-ray diffraction, electron back scattered diffraction, and tensile test. The results show that typical microstructure containing ferrite, bainite, and retained austenite can be obtained when two-stage heat treatment process was utilized. When annealing temperature is 840 °C and austempering temperature is 400 °C, the tensile strength is 542 MPa and the product of strength and elongation is 17,685 MPa%. The morphologies and stability of the retained austenite in low silicon/high aluminum TRIP steel were finally discussed.
Yang Zhao , Qiangjun Yan , Liqing Chen , Xiaoyun Yuan . Effect of Isothermal Temperature on Microstructure and Mechanical Properties of High Al–Low Si TRIP Steel[J]. Acta Metallurgica Sinica (English Letters), 2014 , 27(3) : 389 -394 . DOI: 10.1007/s40195-014-0068-9
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