The influence of decarburization on the mechanical properties of 2100 MPa grade V microalloyed bridge cable steel wire

SU Qihao; QI Haiquan; LI Xinru; LI Lamei; YANG Zikang; XIE Yingying; YAO Xiaofeng; ZHOU Zhongcheng

doi:10.7513/j.issn.1004-7638.2025.06.019

Volume 46 Issue 6

Dec. 2025

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SU Qihao, QI Haiquan, LI Xinru, LI Lamei, YANG Zikang, XIE Yingying, YAO Xiaofeng, ZHOU Zhongcheng. The influence of decarburization on the mechanical properties of 2100 MPa grade V microalloyed bridge cable steel wire[J]. IRON STEEL VANADIUM TITANIUM, 2025, 46(6): 157-163. doi: 10.7513/j.issn.1004-7638.2025.06.019

Citation:

SU Qihao, QI Haiquan, LI Xinru, LI Lamei, YANG Zikang, XIE Yingying, YAO Xiaofeng, ZHOU Zhongcheng. The influence of decarburization on the mechanical properties of 2100 MPa grade V microalloyed bridge cable steel wire[J]. IRON STEEL VANADIUM TITANIUM, 2025, 46(6): 157-163. doi: 10.7513/j.issn.1004-7638.2025.06.019

Citation:

SU Qihao, QI Haiquan, LI Xinru, LI Lamei, YANG Zikang, XIE Yingying, YAO Xiaofeng, ZHOU Zhongcheng. The influence of decarburization on the mechanical properties of 2100 MPa grade V microalloyed bridge cable steel wire[J]. IRON STEEL VANADIUM TITANIUM, 2025, 46(6): 157-163. doi: 10.7513/j.issn.1004-7638.2025.06.019

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The influence of decarburization on the mechanical properties of 2100 MPa grade V microalloyed bridge cable steel wire

doi: 10.7513/j.issn.1004-7638.2025.06.019

SU Qihao^{1, 2
,},
QI Haiquan^{1, 2
,
,},
LI Xinru^{1, 2},
LI Lamei^{1, 2},
YANG Zikang^{1, 2},
XIE Yingying^{1, 2},
YAO Xiaofeng^{1, 2},
ZHOU Zhongcheng³

1.
School of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, Guangxi, China
2.
Guangxi Key Laboratory of Optical and Electronic Materials and Devices, Guilin 541004, Guangxi, China
3.
Jiangsu Yingliu Machinery Manufacturing Co., LTD, Yancheng 224400, Jiangsu, China

More Information

Received Date: 2025-08-15
Accepted Date: 2025-12-05
Rev Recd Date: 2025-12-04

Available Online: 2025-12-31

Publish Date: 2025-12-31

Abstract

Abstract

To quantify the influence of decarburization layers on the mechanical properties of ultra-high strength cable steel wires, in this paper the radial hardness distribution, decarburization layer depth and mechanical properties of 2100 MPa grade V microalloyed zinc-aluminum cable steel wires after layer-by-layer stripping of decarburization layers had been systematically studied. The results show that the radial hardness of the steel wire substrate increases regularly from the surface to the core, with the hardness (HV) being 601 at the outermost layer and 678 at the core. The hardness data confirm that the actual decarburization layer depth of the steel wire can reach (150±10) μm. The thickness of achieved zinc-aluminum coating on the steel wire is approximately 30 μm, which reduces the steel wire's strength by 11.17 MPa, indicating a minor impact on the steel wire's strength. After the layer-by-layer removal of the decarburized layer, the strength of the steel wire substrate increases from 2134.04 MPa to 2225.97 MPa. The decarburized layer reduces the steel wire's strength by 91.93 MPa, and the strength tends to stabilize after removing a 140 μm layer. It can be seen from the data that the decarburization layer significantly reduces the overall strength of the cable steel wire. Therefore, well controlling the decarburization of the wire rods is an important factor in the development of ultra-high strength cable steel wire.
- cable steel wire,
- decarburization,
- vanadium,
- mechanical properties,
- hardness distribution

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References(17)

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