Tempering kinetics and corrosion resistance of quenched and tempered AISI 4130 medium carbon steel,Materials and Corrosion

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Tempering kinetics and corrosion resistance of quenched and tempered AISI 4130 medium carbon steel
Materials and Corrosion ( IF 1.6 ) Pub Date : 2021-06-27 , DOI: 10.1002/maco.202112516
Aliasghar Mosayebi ₁ , Maryam Soleimani ₁ , Hamed Mirzadeh ₁ , Changiz Dehghanian ₁

Affiliation

The kinetics and the effects of tempering on the corrosion resistance of AISI 4130 steel were studied. The tempering activation energy was close to that for the diffusion of C in Î±-iron. This implies that the tempering kinetics in this steel is controlled by carbon diffusion. By increasing the time and temperature of tempering, the corrosion current density (i_corr) in the polarization curves decreased whereas the diameter of the semicircular arc in the Nyquist plots increased, which implies higher corrosion resistance. The i_corr was successfully related to hardness, which actually indicates the effect of microstructure. Based on these findings, the quench and tempering treatment was used to adjust both the hardness and corrosion resistance of the AISI 4130 steel.

中文翻译：

调质AISI 4130中碳钢的回火动力学及耐腐蚀性能

研究了回火对 AISI 4130 钢耐蚀性的动力学和影响。回火活化能接近α-铁中C扩散的活化能。这意味着该钢的回火动力学受碳扩散控制。随着回火时间和温度的增加，极化曲线中的腐蚀电流密度（i _corr）降低，而奈奎斯特图中半圆弧的直径增加，这意味着更高的耐腐蚀性。在我_科尔成功地与硬度相关联，这实际上表明了微观结构的影响。基于这些发现，使用淬火和回火处理来调整 AISI 4130 钢的硬度和耐腐蚀性。

更新日期：2021-06-27

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