Ultrafine bainitic steel produced through ausforming-quenching process

H. Guo; Y.P. Fan; X.Y. Feng; Q. Li

Journal of Materials Research and Technology (May 2020)

Ultrafine bainitic steel produced through ausforming-quenching process

H. Guo,
Y.P. Fan,
X.Y. Feng,
Q. Li

Affiliations

H. Guo: Facility Horticulture Laboratory of University in Shandong, Weifang University of Science and Technology, Weifang 262700, China; School of Mechanical Engineering, Shandong University, Jinan 250012, China; Corresponding author at: Facility Horticulture Laboratory of University in Shandong, Weifang University of Science and Technology, Weifang 262700, China.
Y.P. Fan: Facility Horticulture Laboratory of University in Shandong, Weifang University of Science and Technology, Weifang 262700, China
X.Y. Feng: School of Mechanical Engineering, Shandong University, Jinan 250012, China
Q. Li: Facility Horticulture Laboratory of University in Shandong, Weifang University of Science and Technology, Weifang 262700, China

Journal volume & issue: Vol. 9, no. 3
pp. 3659 – 3663

Abstract

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The coupling effects of ausforming and quenching process on isothermal bainite transformation behaviors, microstructures and mechanical properties of ultrafine bainitic steel have been analyzed. The synergism of ausforming and prior martensite transformation not only significantly accelerates subsequent bainite transformation, but also effectively refines bainite laths and greatly reduces the size of harmful blocky retained austenite, providing an improved transformation induced plasticity effect. Ultimate tensile strength of 2000 MPa and total elongation of 24% can be achieved in ultrafine bainitic steel by ausforming-quenching process and austempering at 300 °C for 1 h.

Published in Journal of Materials Research and Technology

ISSN: 2238-7854 (Print); 2214-0697 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.journals.elsevier.com/journal-of-materials-research-and-technology/

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