Leakage failure analysis of a 60 m3 LNG storage tank

doi:10.1016/j.engfailanal.2023.107591

IMR OpenIR

	Leakage failure analysis of a 60 m3 LNG storage tank
	Li, Tianfu; Qu, Shen; Zang, Qishan; Dong, Chen; Fu, Changming; Zhang, Zhefeng
通讯作者	Qu, Shen(squ@imr.ac.cn) ; Zhang, Zhefeng(zhfzhang@imr.ac.cn)
	2023-11-01
发表期刊	ENGINEERING FAILURE ANALYSIS
ISSN	1350-6307
卷号	153 页码:15
摘要	This work aimed to analyze a leak that occurred in a 60 m3 LNG storage tank made of 304 stainless steel. Optical microscopy (OM), scanning electron microscope (SEM), energy dispersive spectrometer (EDS), transmission electron microscope (TEM), and mechanical property and hardness tests were conducted to characterize the failed storage tank. The results show that the crack originates near the circumferential weld of the lower head and propagates perpendicular to the weld. There are dense corrosion pits near the crack paths, and high contents of Cl and S in the crack and pits. Besides this, deformation-induced martensite transformation occurs during the cold spinning process of the head, and the microstructure undergoes embrittlement. In service, the lower head subjected to greater internal pressure, plus the structural stress caused by martensite transformation and the welding residual stress, combined with the action of corrosive medium, stress corrosion cracking (SCC) occurs near the circumferential weld of the lower head. To prevent SCC on storage tank, it is suggested to utilize 304 stainless steel with a low content of delta-ferrite, and apply solution treatment after spin molding of the head of tank.
关键词	Failure analysis 304 stainless steel LNG storage tank Martensite transformation Stress corrosion cracking
DOI	10.1016/j.engfailanal.2023.107591
收录类别	SCI
语种	英语
WOS研究方向	Engineering ; Materials Science
WOS类目	Engineering, Mechanical ; Materials Science, Characterization & Testing
WOS记录号	WOS:001106680100001
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：8[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/177265
专题	中国科学院金属研究所
通讯作者	Qu, Shen; Zhang, Zhefeng
作者单位	Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Li, Tianfu,Qu, Shen,Zang, Qishan,et al. Leakage failure analysis of a 60 m3 LNG storage tank[J]. ENGINEERING FAILURE ANALYSIS,2023,153:15.
APA	Li, Tianfu,Qu, Shen,Zang, Qishan,Dong, Chen,Fu, Changming,&Zhang, Zhefeng.(2023).Leakage failure analysis of a 60 m3 LNG storage tank.ENGINEERING FAILURE ANALYSIS,153,15.
MLA	Li, Tianfu,et al."Leakage failure analysis of a 60 m3 LNG storage tank".ENGINEERING FAILURE ANALYSIS 153(2023):15.