
Summary
High-cycle and low-cycle properties of base and weld metals for SUS304L and SUS316L and the effects of welding structure and delta-ferrite on fatigue properties were investigated at cryogenic temperatures in order to evaluate the long-life reliability of the structural materials to be used in liquid hydrogen supertankers and storage tanks and to develop a welding process for these applications. The S-N curves of the base and weld metals shifted towards higher levels, i.e., the longer life side, with decreasing test temperatures. High-cycle fatigue tests demonstrated the ratios of fatigue strength at 10 power 6 cycles to tensile strength of the weld metals to be 0.35-0.7, falling below those of base metals with decreasing test temperatures.
Details
- Original title: Effect of welding structure and delta-ferrite on fatigue properties for tungsten-inert-gas (TIG) welded austenitic stainless steels at cryogenic temperatures.
- Record ID : 2002-1172
- Languages: English
- Source: Cryogenics - vol. 40 - n. 4-5
- Publication date: 2000/04
Links
See other articles in this issue (5)
See the source
Indexing
- Themes: Properties of cryogenic fluids and materials
- Keywords: Welding; Mechanical property; Temperature; Fatigue; Cryogenics; Stainless steel