CORROSION BEHAVIOUR OF ANNEALED 42CrMo4 STEEL

IF 0.6 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY Materiali in tehnologije Pub Date : 2023-03-30 DOI:10.17222/mit.2022.624

L. Liverić, D. Iljkić, Z. Jurković, Nikša Čatipović, Paweł M. Nuckowski, O. Bialas

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Abstract

In this paper, the corrosion behaviour of 42CrMo4 low-alloy steel after normalizing, soft annealing, spheroidizing annealing and full annealing is investigated. 42CrMo4 is steel for quenching and tempering, and one of the widely used and studied steels due to its good combination of mechanical properties. Sometimes, it is used in the annealed condition. Nevertheless, the corrosion properties of 42CrMo4 steel are poorly studied, especially in the annealed condition. The main objective of this work is to increase the knowledge about the corrosion behaviour of the investigated alloy. The mechanical and microstructure properties of the samples after different annealing processes were characterised with hardness testing, optical and scanning electron microscopy (SEM) and X-ray diffraction (XRD). Measurements of the open-circuit potential and potentiodynamic polarisation of the samples after different annealing processes were carried out in a naturally aerated solution. It was found that the corrosion rate of the soft annealed samples was higher than that of the spherical and full annealed samples. Moreover, full annealing resulted in a significant improvement in the corrosion resistance.

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退火42CrMo4钢的腐蚀行为

本文研究了42CrMo4低合金钢经正火、软退火、球化退火和全退火后的腐蚀行为。42CrMo4是一种淬火回火用钢，因其具有良好的综合力学性能而成为广泛应用和研究的钢种之一。有时，它在退火条件下使用。然而，对42CrMo4钢的腐蚀性能研究甚少，特别是在退火条件下。这项工作的主要目的是增加对所研究合金的腐蚀行为的了解。采用硬度测试、光学显微镜、扫描电子显微镜(SEM)和x射线衍射仪(XRD)表征了不同退火工艺后样品的力学性能和显微组织性能。在自然曝气溶液中测量了不同退火工艺后样品的开路电位和动电位极化。结果表明，软退火试样的腐蚀速率高于球形和全退火试样。此外，完全退火导致了耐腐蚀性的显著提高。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Materiali in tehnologije 工程技术-材料科学：综合

CiteScore

1.30

自引率

0.00%

发文量

审稿时长

4-8 weeks

期刊介绍： The journal MATERIALI IN TEHNOLOGIJE/MATERIALS AND TECHNOLOGY is a scientific journal, devoted to original papers and review scientific papers concerned with the areas of fundamental and applied science and technology. Topics of particular interest include metallic materials, inorganic materials, polymers, vacuum technique and lately nanomaterials.