DataVXAdvanced Engineering MaterialsPaper
journal article·2023-03

Strengthen and Toughen the Low‐Alloyed Steel by Direct Tempforming

Jun Wang, Zhixue Liu, Tiegang Luo, Fuxing Yin, Baoxi Liu, Zhichao Luo

Advanced Engineering Materials· Volume 25· Issue 5
Publisher page
Source abstract

Abstract

Improving strength without sacrificing toughness is a permanent request for the development of advanced engineering materials. Herein, a novel energy‐saving strategy is developed to obtain strong but tough low‐alloyed steels. A medium‐carbon steel (42CrMo) is used for demonstration. Warm deformation (tempforming) is applied to the hot‐rolled and air‐cooled 42CrMo steel. After tempforming, the microstructure consists of nano‐sized carbides and highly textured ultrafine grains. The tensile strength of the tempformed steels can reach 1.2 GPa, while the impact toughness is higher than 100 J even at temperatures as low as −80 °C, which are one order of magnitude higher than the counterpart steel after tempering. The present work sheds light on the design and fabrication of high‐performance engineering steels with an excellent combination of strength and toughness.
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Research context

Metals & alloys

OpenAlex topics: Microstructure and Mechanical Properties of Steels · Microstructure and mechanical properties · Metal and Thin Film Mechanics

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

College of Materials and Chemical Engineering Xi'an Technological University Xi'an 710021 P. R. China

Institute of New Materials Guangdong Academy of Sciences Guangdong Provincial Iron Matrix Composite Engineering Research Center Guangzhou 510650 P. R. China

Tianjin Key Laboratory of Materials Laminating Fabrication and Interfacial Controlling Technology Research Institute for Energy Equipment Materials School of Materials Science and Engineering Hebei University of Technology Tianjin 300132 P. R. China

Funding

National Natural Science Foundation of China

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