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激光重熔GX40CrNiSi25-20铸造不锈钢的耐腐蚀性和抗气蚀性评估

Assessment of Corrosion and Cavitation Resistance of Laser Remelted GX40CrNiSi25-20 Cast Stainless Steel.

作者信息

Mitelea Ion, Bordeașu Ilare, Cosma Daniela, Buzdugan Dragoș, Crăciunescu Corneliu Marius, Uțu Ion Dragoș

机构信息

Department of Materials and Fabrication Engineering, Politehnica University Timisoara, Bulevardul Mihai Viteazul nr.1, 300222 Timișoara, Romania.

Department of Mechanical Machines, Equipment and Transports, Politehnica University Timisoara, Bulevardul Mihai Viteazul nr.1, 300222 Timisoara, Romania.

出版信息

Materials (Basel). 2024 Dec 22;17(24):6278. doi: 10.3390/ma17246278.

DOI:10.3390/ma17246278
PMID:39769878
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11728005/
Abstract

This paper explores the enhancement of cavitation and corrosion resistance in cast stainless steel through laser beam surface remelting. The influence of laser treatment on material properties was assessed by analyzing the microstructure using optical microscopy, electron microscopy, and X-ray diffraction. Cavitation erosion was evaluated in tap water using an ultrasonic vibration setup, following ASTM G32-2016 standards. Results show that local remelting of the surface with a laser beam causes a reduction in material loss and cavitation erosion rate. Potentiodynamic polarization tests revealed a significant improvement in corrosion resistance, indicated by a reduced corrosion current density in the laser-treated surface. The observed improvements in cavitation and corrosion resistance are attributed to microstructural hardening, characterized by grain refinement and a uniform, homogeneous structure with finely dispersed, small precipitate particles.

摘要

本文探讨了通过激光束表面重熔提高铸造不锈钢的抗气蚀和耐腐蚀性能。通过光学显微镜、电子显微镜和X射线衍射分析微观结构，评估了激光处理对材料性能的影响。按照ASTM G32 - 2016标准，使用超声振动装置在自来水中评估气蚀磨损。结果表明，激光束对表面进行局部重熔会降低材料损失和气蚀磨损率。动电位极化测试显示耐腐蚀性能有显著改善，激光处理表面的腐蚀电流密度降低即表明了这一点。观察到的抗气蚀和耐腐蚀性能的改善归因于微观结构硬化，其特征是晶粒细化以及具有细小弥散析出颗粒的均匀、同质结构。

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本文引用的文献

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Materials (Basel). 2024 Aug 23;17(17):4180. doi: 10.3390/ma17174180.
2
Effect of pearlitic morphology with varying fineness on the cavitation erosion behavior of eutectoid rail steel.
Ultrason Sonochem. 2021 Mar;71:105399. doi: 10.1016/j.ultsonch.2020.105399. Epub 2020 Nov 17.
3
Corrosion and material alterations of a CuZn38Pb3 brass under acoustic cavitation.在声空化作用下，CuZn38Pb3 黄铜的腐蚀和材料变化。
Ultrason Sonochem. 2019 Nov;58:104628. doi: 10.1016/j.ultsonch.2019.104628. Epub 2019 Jun 4.
4
An investigation on cavitation-corrosion behavior of Ni/β-SiC nanocomposite coatings under ultrasonic field.超声场下Ni/β-SiC纳米复合涂层的空蚀行为研究
Ultrason Sonochem. 2019 Sep;56:229-239. doi: 10.1016/j.ultsonch.2019.04.022. Epub 2019 Apr 11.
5
Does power ultrasound affect heterogeneous electron transfer kinetics?功率超声会影响非均相电子转移动力学吗？
Ultrason Sonochem. 2019 Apr;52:6-12. doi: 10.1016/j.ultsonch.2018.12.017. Epub 2018 Dec 31.