残余元素Cu对预应力钢绞线用82B高碳钢高温氧化行为的影响

doi:10.11896/cldb.24100160

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Abstract By means of thermogravimetric analysis, high-temperature oxidation experiments, characterization of the elemental occurrence states and determination of the oxide skin density, a comparative analysis of the high-temperature oxidation behavior of 82B high-carbon steels were investigated at 900 ℃ to 1 100 ℃, there were two kinds of steel used in the test, one is 82B high-carbon steel containing 0.08%Cu produced by a short process using scrap steel as the raw material, and the orther is 82B high-carbon steel containing 0.02%Cu produced by a traditional long process. The influence of the residual element Cu on the high temperature oxidation behavior was studied. The results show that Cu can reduce the oxidation rate. After 1 hour at 900 ℃ and 1 000 ℃, Cu tends to aggregate at the grain boundaries of the substrate surface and between the oxide scale and the substrate interface, while at 1 100 ℃, Cu is dispersed in the oxide scale. As the temperature increases, the flatness of the interface between the oxide scale and the substrate decreases, and the FeCr₂O₄ and Fe₂SiO₄ oxide films formed by Cr and Si elements at the interface become loose, providing convenience for Cu diffusion into the oxide scale and increasing the difficulty of removing of the oxide scale.

Key words： residual elements high-carbon hard wire high-temperature oxidation strippability of steel oxide scale

Published: 25 June 2025 Online: 2025-06-19

CLC number:

TG156.1

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	Articles by authors
	LI Jincheng
	DONG Shuaijun
	ZHANG Chaolei
	LI Na
	WANG Yifei
	WU Yongjin

Cite this article:

LI Jincheng,DONG Shuaijun,ZHANG Chaolei, et al. Effect of Residual Element Cu on the High Temperature Oxidation Behavior of 82B High-carbon Steel for Prestressed Steel Strands[J]. Materials Reports, 2025, 39(12): 24100160-6.

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https://www.mater-rep.com/EN/10.11896/cldb.24100160 OR https://www.mater-rep.com/EN/Y2025/V39/I12/24100160

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