文献类型：期刊文献

中文题名：长时服役乙烯裂解炉管的环境致裂行为

英文题名：Environment-Assisted Cracking Behavior of Ethylene Cracking Tube After Long Term Service

作者：黄毓晖[1];王楠[1];李锐[1];展益彬[2]

机构：[1]华东理工大学承压系统与安全教育部重点试验室,上海200237;[2]上海卓然工程技术有限公司,上海200335

年份：2025

卷号：46

期号：1

起止页码：46

中文期刊名：腐蚀与防护

外文期刊名：Corrosion & Protection

收录：;北大核心:【北大核心2023】；

基金：国家自然科学基金(52375147)。

语种：中文

中文关键词：乙烯裂解炉管;失效分析;氧化;渗碳;环境致裂

外文关键词：ethylene cracking tube;failure analysis;oxidation;carburization;environment-assisted cracking

摘要：针对某长期服役状态下乙烯裂解炉辐射段出口处炉管的开裂行为,通过化学成分分析、微观组织、显微硬度分析、扫描电镜、能谱分析及纳米压痕等方法进行失效分析。结果表明:环境因素(高温氧化和渗碳)与材料相互作用造成了氧化层剥落和晶界弱化,从而增大了晶界的硬度与脆性,产生沿晶开裂。结合失效分析结果,为实际炉管的生产提供指导性建议。
Using techniques like chemical composition analysis,microstructure,microhardness analysis,scanning electron microscopy,energy spectrum analysis,and nanoindentation,failure analysis was carried out in response to the cracking behavior of the furnace tube at the radiation section outlet of an ethylene cracking furnace that was in long-term service.The findings show that the combination of materials and environmental conditions(carburizing and high-temperature oxidation)resulted in the peeling of the oxide layer and the weakening of grain boundaries.This increased the brittleness and hardness of the grain boundaries and led to intergranular cracking.Recommendations and guidance were provided for the production of actual furnace tubes based on the results of the failure study.