Toughness and Fatigue Properties of Austenitic Steels at Cryogenic Temperature and their Application in Complex Structures
Austenitic stainless steels playa major role in structures for cryogenic equipment. The mechanical properties (yield strength, ultimate tensile strength etc.) of these materials at cryogenic temperature are relatively well known and are mostly superior to thos'e at ambient temperature. On the other hand, the fracture mechanics properties tend to deteriorate at low temperature and the corresponding data basis is still very limited. To improve this situation, a testing program has been initiated to determine the fracture toughness (JIC, KIC) of several stainless steels presently used in cryogenic structures. Commercially available materials from different vendors were used in the as-received condition without any additional treatment affecting their properties. Measurements' were performed at 77 K and 4 K.
KeywordsFatigue Furnace Anisotropy Welding Ductility
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- 1.Krauth, H., Nyilas, A., “Fracture Toughness of Nitrogen Strengthened Austenic Steels at 4 K” in Fracture and Fatigue, J.C. Radon (ed.) Pergamon Press, 1980, pp 119–128.Google Scholar
- 2.2 English, A.T., “Influence of Mechanical Fibering on Anisotropy of Strength and Ductility”, Journal of Metals, 17, 1965, pp 395–401. Google Scholar
- 3 Ross, J.S.H., private communication, 1981. Google Scholar
- 4.4 Nyilas, A., Krauth, H. “Use of Heavy Section Austenitic Welds for 4 K Service”, in Advances in Cryogenic Engineering, Vol. 28, Plenum Press, New York, 1982, pp 853–863. Google Scholar
- 5.Bucci, R.J., “Effect of Residual Stress on Fatigue Crack Growth Rate Measurement”, Fracture Mechanics, ASTM STP 743, 1981, pp 28–47. Google Scholar