高温对Q235低碳钢受硅颗粒冲击时侵蚀损伤的影响

IF 4.3 2区 工程技术 Q2 ENGINEERING, CHEMICAL
Lite Zhang , Xiangbo Meng , Haozhe Jin , Bing Yu , Xiaofei Liu , Chao Wang , Genfu Xu , Junfeng Zhou
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引用次数: 0

摘要

了解高温硅颗粒撞击对工业设备造成的侵蚀对于确保有机硅生产中的管道完整性至关重要。在这项研究中,开发了一个高温气固侵蚀平台来研究Q235低碳钢在不同颗粒速度、颗粒大小、冲击角度和温度(100-500 °C)下的侵蚀行为。通过扫描电镜(SEM)表征了表面形貌的演变,揭示了不同的温度依赖侵蚀机制,包括塑性变形、微切削和裂纹扩展。然而,现有的侵蚀模型没有考虑硅颗粒磨料,并且忽略了温度对目标材料侵蚀行为的影响。本研究的模型以Oka模型的结构为基础,加入了温度相关项和相应的系数修正。实验结果表明,垂直侵蚀速率随粒径的增大而减小,速度指数随温度呈u型关系,粒径指数呈单峰趋势。用非线性软化函数进一步描述了冲蚀的温度依赖性,冲蚀速率在冲蚀角为40°时达到最大值。基于这些发现,利用遗传算法构建了预测高温侵蚀模型,综合了硅颗粒性能和Q235低碳钢的软化行为。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Elevated temperature effects on erosion damage in Q235 mild steel subjected to silicon particle impingement
Understanding the erosion of industrial equipment caused by high-temperature silicon particles impingement is essential for ensuring pipeline integrity in silicone production. In this study, a high-temperature gas–solid erosion platform was developed to investigate the erosive behaviour of Q235 mild steel under varying particle velocities, particle sizes, impact angles, and temperatures (100–500 °C). The evolution of surface morphology was characterised by scanning electron microscopy (SEM), which revealed distinct temperature-dependent erosion mechanisms, including plastic deformation, micro-cutting, and crack propagation. Existing erosion models, however, do not account for silicon particle abrasives and neglect the influence of temperature on the erosion behaviour of the target material. The model in this study is based on the structure of the Oka model, with the incorporation of a temperature-dependent term and corresponding coefficient modifications. Experimental results show that the vertical erosion rate decreases with increasing particle size, while the velocity exponent exhibits a U-shaped dependence on temperature and the particle size exponent follows a single-peak trend. The temperature dependence of erosion is further described by a nonlinear softening function, and the maximum erosion rate occurs at an impact angle of 40°. Based on these findings, a predictive high-temperature erosion model was constructed using genetic algorithms, integrating both silicon particle properties and the softening behaviour of Q235 mild steel.
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来源期刊
Chemical Engineering Science
Chemical Engineering Science 工程技术-工程:化工
CiteScore
7.50
自引率
8.50%
发文量
1025
审稿时长
50 days
期刊介绍: Chemical engineering enables the transformation of natural resources and energy into useful products for society. It draws on and applies natural sciences, mathematics and economics, and has developed fundamental engineering science that underpins the discipline. Chemical Engineering Science (CES) has been publishing papers on the fundamentals of chemical engineering since 1951. CES is the platform where the most significant advances in the discipline have ever since been published. Chemical Engineering Science has accompanied and sustained chemical engineering through its development into the vibrant and broad scientific discipline it is today.
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