Skip to Main Content
ASM Failure Analysis Case Histories

Handbook of Case Histories in Failure Analysis

Edited by
Khlefa A. Esaklul
Khlefa A. Esaklul
Search for other works by this author on:
ASM International
Volume
2
ISBN electronic:
978-1-62708-215-0
Publication date:
1993
Book Chapter

Failure of Welded Helium Tanks

By
H.S. Khatak
H.S. Khatak
Metallurgy Programme, Indira Gandhi Centre for Atomic Research
Search for other works by this author on:
;
V. Seetharaman
V. Seetharaman
Metallurgy Programme, Indira Gandhi Centre for Atomic Research
Search for other works by this author on:
;
J.B. Gnanamoorthy
J.B. Gnanamoorthy
Metallurgy Programme, Indira Gandhi Centre for Atomic Research
Search for other works by this author on:
Published:
1993
Page range:
249 - 252

Abstract

Two tanks made of AISI type 304 stainless steel exhibited cracking in the heat-affected zone (HAZ) of the weld that joined the dished end and the shell. The dished ends had been produced by cold deformation. Hardness measurement and simulation tests showed that the deformation was equivalent to a 30% reduction in thickness. Residual stresses were measured at about 135 MPa (20 ksi). The HAZ was found to be sensitized. The tanks had been stored in a coastal atmosphere for about 4 years before installation. The failure was attributed to intergranular stress-corrosion cracking in a sensitized HAZ due to chloride from the environment. Use of low-carbon type AISI 304L was recommended. Minimization of fit-up stresses and covering with polyethylene sheets during storage were also suggested.

You do not currently have access to this content.
Don't already have an account? Register

H.S. Khatak, V. Seetharaman, J.B. Gnanamoorthy, 1993. "Failure of Welded Helium Tanks", Handbook of Case Histories in Failure Analysis, Khlefa A. Esaklul

Download citation file:


Close
Close Modal
This Feature Is Available To Subscribers Only

Sign In or Create an Account

Close Modal
Close Modal