Failure analysis of the leaking of fixed tube-sheet heat exchanger

	Failure analysis of the leaking of fixed tube-sheet heat exchanger
	Song, Wen-Ming 1,2; Yang, Gui-Rong1 ; Guo, Zhi-Jun 2; Ma, Ying1 ; Hao, Yuan 1; Li, Jian 3
	2014-12-25
发表期刊	Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment
ISSN	10096264
卷号	35 期号:12 页码:107-113
摘要	The leaking was appeared at the fillet weld of the fixed tube-sheet heat exchanger during running. The composition of heat exchanger tube and sheet, microstructure, corrosion appearance and chemical composition of the corrosion products in the failure samples were studied by means of optical microscope, scanning electron microscope and chemical analysis methods. The results show that the composition of heat exchanger tube and sheet meet the requirement of national standard. The main phases of the heat exchanger and heat affecting zone are ferrite and perlite, and martensite and bainite appeared in fillet weld. The difference of microstructure between the different zones of the weld is obvious. The medium among the shell can enter into the gap between the tube and sheet located at the fillet weld and stress concentrate, which can result in the high sensitivity of stress corrosion for the weld. The crack can happen at the bottom of the weld and then develope along the direction to the center of the weld, which led to the leaking of the heat exchanger. ©, 2014, Editorial Office of Transactions of Materials and Heat Treatment. All right reserved.
关键词	Chemical analysis Corrosion Cracks Heat exchangers Microstructure Scanning electron microscopy Stress corrosion cracking Tubes (components) Welds Chemical compositions Corrosion products Fillet welds Heat exchanger tube High sensitivity National standard Stress concentrates Tube sheets
收录类别	EI
语种	中文
出版者	Editorial Office of Transactions of Materials and Heat Treatment
EI入藏号	20150400457570
EI主题词	Failure analysis
EI分类号	421 Strength of Building Materials ; Mechanical Properties - 538.2 Welding - 539.1 Metals Corrosion - 616.1 Heat Exchange Equipment and Components - 741.1 Light/Optics - 801 Chemistry - 804 Chemical Products Generally - 933 Solid State Physics - 951 Materials Science
来源库	Compendex
分类代码	421 Strength of Building Materials; Mechanical Properties - 538.2 Welding - 539.1 Metals Corrosion - 616.1 Heat Exchange Equipment and Components - 741.1 Light/Optics - 801 Chemistry - 804 Chemical Products Generally - 933 Solid State Physics - 951 Materials Science
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/113683
专题	材料科学与工程学院
作者单位	1.School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou, China; 2.Lanpec Technologies Limited, Lanzhou, China; 3.Wuhan Research Institute of Materials Protection, Wuhan, China
第一作者单位	材料科学与工程学院
第一作者的第一单位	材料科学与工程学院
推荐引用方式 GB/T 7714	Song, Wen-Ming,Yang, Gui-Rong,Guo, Zhi-Jun,et al. Failure analysis of the leaking of fixed tube-sheet heat exchanger[J]. Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment,2014,35(12):107-113.
APA	Song, Wen-Ming,Yang, Gui-Rong,Guo, Zhi-Jun,Ma, Ying,Hao, Yuan,&Li, Jian.(2014).Failure analysis of the leaking of fixed tube-sheet heat exchanger.Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment,35(12),107-113.
MLA	Song, Wen-Ming,et al."Failure analysis of the leaking of fixed tube-sheet heat exchanger".Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment 35.12(2014):107-113.