Fatigue properties of Ti microalloyed high-strength steel by CSP process

被引：0

作者：

Tian, Xing ^{[1
]}

Zhang, Yong-Kun ^{[2
]}

Tan, Jia-Mei ^{[2
]}

Kang, Yong-Lin ^{[1
]}

机构：

[1] School of Materials Science and Engineering, University of Science and Technology Beijing

[2] CSP Branch of General Wire Rod Mill, Wuhan Iron and Steel (Group) Co.

来源：

Beijing Keji Daxue Xuebao/Journal of University of Science and Technology Beijing | 2014年 / 36卷 / 06期

关键词：

Fatigue properties; High strength steel; Microalloying; Microstructure; Titanium;

D O I：

10.13374/j.issn1001-053x.2014.06.011

中图分类号：

学科分类号：

摘要：

The fatigue properties of 2 mm-thick Ti-microalloyed high-strength steel produced in a CSP line was studied by the up-down method. It is found that the tensile strength of the steel is 830 MPa, the fatigue strength is 685 MPa, about 0.83 times as large as the tensile strength, and the elongation is 18.8%. The S-N curve of the steel was drawn out and the relationship between the maximum stress and fatigue life was fitted. The cracking mechanism was analyzed by scanning electron microscopy. The crack source, expansion region, and eventual failure region appears significantly in the microscopic structure. Fatigue cracks initiate from microcracks on the strip surface. Microcosmic fatigue striations, secondary cracks, and macroscopic fatigue bay ridges are observed in the fatigue extension region. The eventual failure region meets the characteristics of tear edge morphology along with dimples.

引用

页码：780 / 786

页数：6

共 50 条

[31] Fatigue strength of high-strength steel after shipyard production process of plasma cutting, grinding, and sandblasting [J].

Ingrit Lillemäe-Avi ;

Sami Liinalampi ;

Eero Lehtimäki ;

Heikki Remes ;

Pauli Lehto ;

Jani Romanoff ;

Sören Ehlers ;

Ari Niemelä .

Welding in the World, 2018, 62 :1273-1284

[32] Investigation on M-A constituent in weld CGHAZ of high-strength microalloyed steel [J].

Chen Cuixin ;

Li Wushen ;

Peng Huifen .

PHYSICAL AND NUMERICAL SIMULATION OF MATERIALS PROCESSING, PTS 1 AND 2, 2008, 575-578 :690-+

[33] Influence of Ti on the toughness of the FGHAZ and the CGHAZ of high-strength microalloyed S700MC steels [J].

Spachinger, Stefan Johannes ;

Ernst, Wolfgang ;

Enzinger, Norbert .

WELDING IN THE WORLD, 2017, 61 (06) :1117-1131

[34] Specimen size effects on gigacycle fatigue properties of high-strength steel under ultrasonic fatigue testing [J].

Furuya, Y. .

SCRIPTA MATERIALIA, 2008, 58 (11) :1014-1017

[35] Effect of Nb addition on hole expansion ratio and its precipitation behavior in Ti-microalloyed hot-rolled high-strength steel [J].

Zhu, Kang-feng ;

Wang, Wen-jun ;

Zhang, Bo ;

Sun, Xin-jun ;

Yang, Cai-fu .

JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL, 2025,

[36] The Effects of Cooling Mode on the Properties of Ti-Nb Microalloyed High-strength Hot-rolled Steels [J].

Zhu, Min ;

Xu, Guang ;

Zhou, Mingxing ;

Hu, Haijiang .

JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION, 2019, 34 (03) :692-697

[37] Mechanical Properties and Microstructure of High-Strength Steel Controlled by Hot Stamping Process [J].

Ou, Hang ;

Zhang, Xu ;

Xu, Junrui ;

Li, Guangyao ;

Cui, Junjia .

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE, 2018, 27 (08) :4025-4035

[38] Mechanical Properties and Microstructure of High-Strength Steel Controlled by Hot Stamping Process [J].

Hang Ou ;

Xu Zhang ;

Junrui Xu ;

Guangyao Li ;

Junjia Cui .

Journal of Materials Engineering and Performance, 2018, 27 :4025-4035

[39] Study on the heating process, high temperature mechanical properties and fatigue properties of a low-carbon microalloyed steel [J].

Zou, Jiahui ;

Fan, Lei ;

Yuan, Qinpan ;

Xiao, Juan ;

Xu, Guang ;

Tian, Junyu .

IRONMAKING & STEELMAKING, 2024,

[40] Fatigue Behavior of Cracked High-Strength Steel Plates Strengthened by CFRP Sheets [J].

Hu, Li Li ;

Zhao, Xiao Ling ;

Feng, Peng .

JOURNAL OF COMPOSITES FOR CONSTRUCTION, 2016, 20 (06)

← 1 2 3 4 5 →