Thermal Fatigue Behavior of 400 Series Ferritic Stainless Steels

In this study, thermal fatigue properties of 400 series
ferritic stainless steels have been evaluated in the temperature ranges
of 200-800oC and 200-900oC. Systematic methods for control of
temperatures within the predetermined range and measurement of load
applied to specimens as a function of temperature during thermal
cycles have been established. Thermal fatigue tests were conducted
under fully constrained condition, where both ends of specimens were
completely fixed. It has been revealed that load relaxation behavior at
the temperatures of thermal cycle was closely related with the thermal
fatigue property. Thermal fatigue resistance of 430J1L stainless steel
is found to be superior to the other steels.

Authors:

• Seok Hong Min
• Tae Kwon Ha

Keywords:

• Ferritic stainless steel
• automotive exhaust
• thermal fatigue
• microstructure
• load relaxation.

References:

[1] D. A. Spera, “Thermal fatigue of materials and components,” ASTM STP
612, p. 69, 1976.
[2] N. Fujita, K. Ohmur, M. Kikuchi, and T. Suzuki, Scripta Mater., vol. 35, p.
705, 1996.
[3] N. Matsuura, 2nd Annual Conference of the International Stainless Steel
Forum, Market Development Committee, p. 1, 1998.
[4] J. W. Kwon, Y. H. Kim, and Y. D. Lee, The 7th Steel Symposium on
“Development of Automotive Materials and Parts for Weight Reduction”, Eds. by O. Kwon, Y. S. Jin, S. J. Kim, and W. P. Lee, KIM, Korea, p. 285,
2000.
[5] Y. D. Lee, and S. H. Park, Bull. of the Koeran Inst. of Met. & Mater., vol.
6, p. 41, 1993.
[6] J. W. Kwon, Y. Y. Lee, and Y. D. Lee, Materials at High Temperature,
vol. 17, p. 319, 2000.
[7] M. Barteri, M. G. Mecozzi, and S. Fortunati, International Congress
Stainless Steel ’99, vol. 3, p. 75, 1999.
[8] F. D. Fisher, F. G. Rammersdorfer, F. J. Bauer, Metall. Trans. A, vol. 21,
p. 935, 1990.
[9] N. Fujita, N. Ohmura, E. Sato, and A. Yamamoto, Nippon Technical
Report, No. 71, p. 25, 1996.
[10] D. Lee and E. W. Hart, Metall. Trans., vol. 2A, p. 1245, 1971.
[11] F. Cverna, “Thermal Properties of Metals,” ASM International, Materials
Park, Ohio, 2002.