Microstructure and Mechanical Properties of 60Si2Mn Steel after Austenite Inverse Phase Transformation by Sub-Temperature Quenching

An Ming Li; Meng Juan Hu

doi:10.4028/www.scientific.net/AMR.399-401.228

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 399-401Microstructure and Mechanical Properties of...

Microstructure and Mechanical Properties of 60Si2Mn Steel after Austenite Inverse Phase Transformation by Sub-Temperature Quenching

Abstract:

Microstructure and mechanical properties of 60Si2Mn steel by 870 °C prequenched and second sub-temperature quenching was studied. The results showed that the hardness of the 60Si2Mn steel first increased and then decreased with increasing second sub-temperature quenching temperature, and the highest hardness was obtained when sub-temperature quenching temperature was 800 °C.The sample after second sub-temperature quenching was composed of martensite and a little ferrite phase. The abundance of ferrite phase decreased with the increase in second sub-temperature quenching temperature. Fine martensite was obtained by second sub-temperature quenching, which may be relate to the grain refinement of austenitic phase and austenitic nucleation sites. The mechanical properties of the 60Si2Mn steel after 870 °C prequenching and second sub-temperature quenching are better than that of conventional samples after 870 °C quenching.

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Periodical:

Advanced Materials Research (Volumes 399-401)

Pages:

228-232

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.399-401.228

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Online since:

November 2011

Authors:

An Ming Li, Meng Juan Hu

Keywords:

60Si2Mn Steel, Hardness, Inverse Phase Transformation, Microstructure, Tensile Strength

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