Effect of Cooling Rate and Austenite Deformation on Hardness and Microstructure of 960MPa High Strength Steel-Reference-Cited by-同舟云学术

Effect of Cooling Rate and Austenite Deformation on Hardness and Microstructure of 960MPa High Strength Steel

Published:2020-12-09 Issue:1 Volume:27 Page:415-423
ISSN:2191-0359
Container-title:Science and Engineering of Composite Materials
language:
Short-container-title:

Author:

Yang Xiong¹²,Yu Wei¹,Tang Di³,Shi Jiaxin¹,Li Yuqian²,Fan Jia²,Mei Donggui²,Du Qiming²

Affiliation:

1. Institute of Engineering Technology, University of Science and Technology Beijing, Beijing100083, China

2. Hesteel Group Company Limited Handan branch, Technology Center, Handan, Hebei, China, 056015

3. Collaborative Innovation Center of Steel Technology, University of Science and Technology Beijing, Beijing100083, China

Abstract

AbstractIn order to develop 960MPa grade high strength steel, the effects of cooling rate and austenite deformation on the hardness and the microstructure of high strength steel has been studied by Scanning Electron microscope (SEM), Transmission Electron Microscope (TEM), Gleeble-3500 thermal simulation testing machine and T2500 Vickers hardness tester. The results show that only when the cooling rate was higher than 10∘C/s and the final cooling temperature was lower than 250∘C, the microstructure mainly consists of martensite, and the strength of high strength steel could be above 960MPa; and austenite deformation could effectively refine the width of martensite lath, thus improving the strength and toughness.

Publisher

Walter de Gruyter GmbH

Subject

Materials Chemistry,Ceramics and Composites

Link

https://www.degruyter.com/document/doi/10.1515/secm-2020-0045/pdf

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