电焊机2017，Vol.47Issue(12)：63-69,7.DOI:10.7512/j.issn.1001-2303.2017.12.14
P92钢焊接接头的高温抗氧化性研究
Study on high temperature oxidation resistance properties of P92 steel welding joints
摘要
Abstract
P92 steel has gradually become the ideal steel for super-heater,re-heater and other parts of super supercritical unit because of its excellent comprehensive properties.On the work condition,the high temperature oxidation resistance property of welding joints by welding affects direcdy the life of parts.In this thesis,oxidation kinetics curves of P92 steel welding joint were studied by weight gain method when the air medium temperature was 650 ℃.By OM and SEM,the oxidation products pattern on surface and section cross were observed and analyzed,through XRD,the phase was investigated.The results shows that:at a certain temperature,the oxidation rate of the welded joint of P92 steel increases first and then decreases,and then tends to the stable value,which is in line with the parabolic law;oxidizing after 132 h at 650 ℃,oxidation film thickness of A zone,welded joints,base metal at welding joints is respectively 45 μm,30 μm,27 μm;surface oxidation products of P92 steel welding joints at 650 ℃ is mainly Fe2O3.关键词
P92钢/焊接接头/高温抗氧化性Key words
P92 steel/welding joints/high temperature oxidation resistance property分类
矿业与冶金引用本文复制引用
赵勇桃,田钰鹏,刘野,董俊慧..P92钢焊接接头的高温抗氧化性研究[J].电焊机,2017,47(12):63-69,7.基金项目
内蒙古自治区研究生科研创新资助项目(S20151012704) （S20151012704）
内蒙古自然科学基金项目(2017MS(LH)0518). （2017MS(LH）
