Effects of Boron Addition on Undercooled Austenite Transformation of Low Carbon Mn-Nb Steels

Yan Mei Li; Zheng Tao Duan; Fu Xian Zhu

doi:10.4028/www.scientific.net/AMR.476-478.316

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 476-478Effects of Boron Addition on Undercooled Austenite...

Effects of Boron Addition on Undercooled Austenite Transformation of Low Carbon Mn-Nb Steels

Abstract:

The effects of boron on the undercooled austenite transformation of low carbon Mn-Nb steels during continuous cooling were investigated in this study. Five kinds of steel specimens were fabricated by varying boron contents. Continuous cooling transformation (CCT) curves of the investigated steels under deformed conditions were constructed by a combination of deformation dilatometry and metallographic methods. The results indicated that a small amount of boron efficiently increased the hardenability of steels and lowered transformation temperature, which leading to a finer bainite microstructure and an increase in hardness.

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Periodical:

Advanced Materials Research (Volumes 476-478)

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316-320

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.476-478.316

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Online since:

February 2012

Authors:

Yan Mei Li, Zheng Tao Duan, Fu Xian Zhu

Keywords:

Boron, Low Carbon Mn-Nb Steels, Undercooled Austenite Transformation

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