压力容器2024，Vol.41Issue(6)：23-29,7.DOI:10.3969/j.issn.1001-4837.2024.06.004
不同温度下Inconel 690TT换热管的冲击微动磨损特征研究
An investigation of impact dominating fretting wear of Inconel 690TT tubes at different temperatures
摘要
Abstract
In order to study the effect of impact micromotional wear of heat exchanger tubes in steam generators,the impact micromotional wear of Inconel 690TT tubes with SUS405 supports was experimentally studied at temperatures of 200,250,285℃,and the wear characteristics were systematically analyzed by means of scanning electron microscopy and energy spectrometry.The results show that the wear amounts at 250℃ and 285℃ are similar and significantly larger than the test results at 200℃.Through the analysis of the worn surface,it is found that an increase in temperature leads to a more significant delamination and a decrease in the surface hardness in turn leads to an increase in wear volume.From the results of the spectrometer analyses,the oxidation becomes severe at 250℃ and 285℃,but the mass transfer is not severe in terms of C and Fe content.However,the mass transfer increases slightly with increasing temperature.This indicates that the main wear mechanism of impact wear is delamination,and adhesive wear shows a rising trend with increasing temperature.The research results of the impact micromotion wear mechanism are of great significance for the subsequent research,design and maintenance of steam generators.关键词
蒸汽发生器/换热管/冲击磨损/微动磨损/Inconel 690TTKey words
steam generator/heat exchange tubes/impact dominating wear/fretting wear/Inconel 690TT分类
机械制造引用本文复制引用
于美琪,王博尧,张红升,谭蔚,郭凯..不同温度下Inconel 690TT换热管的冲击微动磨损特征研究[J].压力容器,2024,41(6):23-29,7.基金项目
国家自然科学基金项目(22308297) （22308297）
河北省自然科学基金项目(E2021203043) （E2021203043）
河北省高等学校科学技术研究项目(QN2022144) （QN2022144）
