FAILURE ANALYSIS OF 18Cr-8Ni STAINLESS STEEL BELLOWS USED IN FLUE GAS GENERATOR SYSTEM

J Chin Soc Corr Pro

1995, Vol. 15

Issue (4): 297-302 DOI:

Current Issue | Archive | Adv Search

FAILURE ANALYSIS OF 18Cr-8Ni STAINLESS STEEL BELLOWS USED IN FLUE GAS GENERATOR SYSTEM

Han Shunchang;Wang Bin;Li Deqin;Wang Hongfeng;Yang Zhiyong(Luoyang Ship Materials Research Institute Luoyang 471039)

Download:

PDF(1103KB)
Export: BibTeX | EndNote (RIS)

Abstract Sir failed 18Cr-SNi stainless steel bellows were examined using a variety of techniques including chemical analysis,metallography, SEM, SAM and ESCA. The failure was due to SCC caused by polythionic acid.The formation of this kind of acidic matter resulted from frequent shutdowns of the fine gas generator without taking proper protective measures. Polythionates were found in remaining water inside the bellow by chemical analysis. Their presence in corrosion products was verified by SAM and ESCA. The corrosion products on the surface of bellows generally consisted of two layers: the outer layer rich in oxygen and the sub-surfaCe layer rich in sulphur as well as oxygen. Both sulfates and sulfied were found in the sub-surface layer of corrosion products.

Key words: Bellows Failure analysis Polythionic acid SCC

Received: 25 August 1995

	Service

	E-mail this article
	Add to citation manager
	E-mail Alert
	RSS
	（）
	Articles by authors

Cite this article:

Han Shunchang;Wang Bin;Li Deqin;Wang Hongfeng;Yang Zhiyong(Luoyang Ship Materials Research Institute Luoyang 471039). FAILURE ANALYSIS OF 18Cr-8Ni STAINLESS STEEL BELLOWS USED IN FLUE GAS GENERATOR SYSTEM. J Chin Soc Corr Pro, 1995, 15(4): 297-302.

URL:

https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y1995/V15/I4/297

1DravnaksA,SanansC．API,1957,37;100-1152BrophyAJ．MaterialsPerformance,1974,13(5):93段学章,张琦．炼油设计,1989,(6):31

[1]	LI Qing, ZHANG Deping, WANG Wei, WU Wei, LU Lin, AI Chi. Evaluation of Actual Corrosion Status of L80 Tubing Steel and Subsequent Electrochemical and SCC Investigation in Lab[J]. 中国腐蚀与防护学报, 2020, 40(4): 317-324.
[2]	Jinheng LUO,Congmin XU,Dongping YANG. Stress Corrosion Cracking of X100 Pipeline Steel in Acid Soil Medium with SRB[J]. 中国腐蚀与防护学报, 2016, 36(4): 321-327.
[3]	Ping DENG,Chen SUN,Qunjia PENG,En-Hou HAN,Wei KE. Review of Irradiation Assisted Stress Corrosion Cracking of Core Structural Materials[J]. 中国腐蚀与防护学报, 2015, 35(6): 479-487.
[4]	WANG Binbin, WANG Zhenyao, CAO Gongwang, ZHONG Xizhou, KE Wei. Atmospheric Corrosion Behavior of Pre-strained Aluminum Alloys LY12 and LC4 in Salt Lake Environment in Western China[J]. 中国腐蚀与防护学报, 2014, 34(3): 287-293.
[5]	CHEN Chen,GUO Hongbo,GONG Shengkai. Failure Analysis of Thermal Barrier Coating Being Subjected to Lateral Thermal Gradient on Surface[J]. 中国腐蚀与防护学报, 2013, 33(5): 400-406.
[6]	MENG Fanjiang,WANG Jianqiu,HAN En-Hou,KE Wei. Stress Corrosion Crack Initiation for Scratched Alloy 690TT in Oxygenated High Temperature Water[J]. 中国腐蚀与防护学报, 2013, 33(5): 413-418.
[7]	ZHANG Zhiming, WANG Jianqiu,HAN En-Hou, KE Wei. EFFECTS OF SURFACE CONDITION ON CORROSION AND STRESS CORROSION CRACKING OF ALLOY 690TT[J]. 中国腐蚀与防护学报, 2011, 31(6): 441-445.
[8]	LIU Wenhong, LI Lei, LIU Yonggang, PAN Zhiyong, WANG Jianjun. MECHANISM OF EROSION-CORROSION WASHOUT FAILURE IN INTERNAL UPSET TRANSITION ZONE FOR DRILLPIPE BASED ON APPLICATION OF FLOW FIELD ANALYSIS[J]. 中国腐蚀与防护学报, 2011, 31(2): 160-164.
[9]	HU Yisong, WANG Jianqiu, KE Wei, HAN En-hou. CORROSION BEHAVIOR OF ALLOY 690TT IN HIGH TEMPERATURE LEAD-CONTAINING CAUSTIC SOLUTION[J]. 中国腐蚀与防护学报, 2010, 30(6): 427-432.
[10]	YU Yuanfang, WANG Hui, HU Shilin. SOME CORROSION PROBLEMS OF ALLOY 690TT IN SPECIAL ENVIRONMENTS[J]. 中国腐蚀与防护学报, 2010, 30(3): 251-256.
[11]	. THE EFFECT OF MECHANICAL FACTORS ON SCC INITIATION OF PIPELINE STEEL[J]. 中国腐蚀与防护学报, 2008, 28(5): 282-286 .
[12]	. Investigation of sulfide stress corrosion cracking for X70 pipeline steel[J]. 中国腐蚀与防护学报, 2008, 28(2): 86-89 .
[13]	. The Influence of Different Enviroments on Stress Corrosion Cracking[J]. 中国腐蚀与防护学报, 2007, 27(6): 354-362 .
[14]	. Study on Stress Corrosion Crack of 16Mn Steel in Wet Sulfureted[J]. 中国腐蚀与防护学报, 2006, 26(6): 360-365 .
[15]	Weiwei Peng. PREVENTION OF STRESS CORROSION CRACKING IN WELD JOINT OF TYPE 304 STAINLESS STEEL BY GLASS-BEAD PEENING[J]. 中国腐蚀与防护学报, 2005, 25(3): 152-156 .

No Suggested Reading articles found!

Viewed

Full text

Abstract

Cited

Shared

Discussed