Characterization and strengthening mechanism of high-strength medium carbon spring steels

To develop higher strength spring steels with better performance for advanced automotive and transportation industries in line with the trend of lightweight, the strengthening mechanism of two practical 55SiCr and 55SiCrNbV spring steels, which represents plain and micro alloyed spring steels, has b...

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Main Authors: Zan Yao, Zongze Huang, Sha Lyu, Fengqiu Tang, Baojun Zhao, Xiaodong Ma
Format: Article
Language:English
Published: Elsevier 2023-11-01
Series:Journal of Materials Research and Technology
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2238785423024390
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author Zan Yao
Zongze Huang
Sha Lyu
Fengqiu Tang
Baojun Zhao
Xiaodong Ma
author_facet Zan Yao
Zongze Huang
Sha Lyu
Fengqiu Tang
Baojun Zhao
Xiaodong Ma
author_sort Zan Yao
collection DOAJ
description To develop higher strength spring steels with better performance for advanced automotive and transportation industries in line with the trend of lightweight, the strengthening mechanism of two practical 55SiCr and 55SiCrNbV spring steels, which represents plain and micro alloyed spring steels, has been investigated based on the systematic characterization of microstructures, hardness, and tensile test. The tensile strength and hardness were found to be correlated well in a linear relationship. Then the strengthening coefficients of C, Si, Cr and Mn were determined to quantify the solid solution strengthening. The strengthening mechanism of spring steels was found to be the summation of solid solution strengthening, grain refinement, dislocation, and precipitation strengthening, which agree well with the tensile test results. The strengthening mechanism could be used as guidance to develop next generation spring steels, which well explained the ultra-high strength spring steels over 2200 MPa class in the literature.
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spelling doaj.art-964bbe1b07da4310bd35fc6a41c040dd2024-02-21T05:25:33ZengElsevierJournal of Materials Research and Technology2238-78542023-11-012713951405Characterization and strengthening mechanism of high-strength medium carbon spring steelsZan Yao0Zongze Huang1Sha Lyu2Fengqiu Tang3Baojun Zhao4Xiaodong Ma5Baoshan Iron and Steel (Baosteel) Co., Ltd., Shanghai, 201900, ChinaBaoshan Iron and Steel (Baosteel) Co., Ltd., Shanghai, 201900, ChinaShanghai Shanmei High Tech Research Institute Co., Ltd., Shanghai, 201613, ChinaThe University of Queensland, St Lucia, QLD 4072, QueenslandInternational Institute for Innovation, Jiangxi University of Science and Technology, Ganzhou 341000, ChinaThe University of Queensland, St Lucia, QLD 4072, Queensland; Corresponding author.To develop higher strength spring steels with better performance for advanced automotive and transportation industries in line with the trend of lightweight, the strengthening mechanism of two practical 55SiCr and 55SiCrNbV spring steels, which represents plain and micro alloyed spring steels, has been investigated based on the systematic characterization of microstructures, hardness, and tensile test. The tensile strength and hardness were found to be correlated well in a linear relationship. Then the strengthening coefficients of C, Si, Cr and Mn were determined to quantify the solid solution strengthening. The strengthening mechanism of spring steels was found to be the summation of solid solution strengthening, grain refinement, dislocation, and precipitation strengthening, which agree well with the tensile test results. The strengthening mechanism could be used as guidance to develop next generation spring steels, which well explained the ultra-high strength spring steels over 2200 MPa class in the literature.http://www.sciencedirect.com/science/article/pii/S2238785423024390Medium carbon spring steelsMicrostructuresMicro alloyingStrengthening mechanismMechanical properties
spellingShingle Zan Yao
Zongze Huang
Sha Lyu
Fengqiu Tang
Baojun Zhao
Xiaodong Ma
Characterization and strengthening mechanism of high-strength medium carbon spring steels
Journal of Materials Research and Technology
Medium carbon spring steels
Microstructures
Micro alloying
Strengthening mechanism
Mechanical properties
title Characterization and strengthening mechanism of high-strength medium carbon spring steels
title_full Characterization and strengthening mechanism of high-strength medium carbon spring steels
title_fullStr Characterization and strengthening mechanism of high-strength medium carbon spring steels
title_full_unstemmed Characterization and strengthening mechanism of high-strength medium carbon spring steels
title_short Characterization and strengthening mechanism of high-strength medium carbon spring steels
title_sort characterization and strengthening mechanism of high strength medium carbon spring steels
topic Medium carbon spring steels
Microstructures
Micro alloying
Strengthening mechanism
Mechanical properties
url http://www.sciencedirect.com/science/article/pii/S2238785423024390
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AT fengqiutang characterizationandstrengtheningmechanismofhighstrengthmediumcarbonspringsteels
AT baojunzhao characterizationandstrengtheningmechanismofhighstrengthmediumcarbonspringsteels
AT xiaodongma characterizationandstrengtheningmechanismofhighstrengthmediumcarbonspringsteels