TY - JOUR
T1 - Temperature Evolution and Life Prediction in Fatigue of Superalloys
AU - Jiang, L.
AU - Wang, H.
AU - Liaw, P. K.
AU - Brooks, C. R.
AU - Chen, L.
AU - Klarstrom, D. L.
PY - 2004/3
Y1 - 2004/3
N2 - Low-cycle fatigue behavior of two superalloys, ULTIMET® alloy, Co-26 pet Cr-9 pet Ni (wt pet), and HAYNES® HR-120® alloy, Ni-33 pct Fe-25 pct Cr, was studied at room temperature. An infrared thermography system was employed to monitor the temperature evolution of fatigue processes for both superalloys. Temperature changes during fatigue were related to the hysteresis effect, and were successfully predicted, based on the consideration of the hysteresis effect and heat conduction. The temperature increase of a specimen from the initial to the equilibrium stages was used as an index to predict the fatigue life of the two superalloys. It was found that the fatigue-life predictions using the present model were in good agreement with the experimental results.
AB - Low-cycle fatigue behavior of two superalloys, ULTIMET® alloy, Co-26 pet Cr-9 pet Ni (wt pet), and HAYNES® HR-120® alloy, Ni-33 pct Fe-25 pct Cr, was studied at room temperature. An infrared thermography system was employed to monitor the temperature evolution of fatigue processes for both superalloys. Temperature changes during fatigue were related to the hysteresis effect, and were successfully predicted, based on the consideration of the hysteresis effect and heat conduction. The temperature increase of a specimen from the initial to the equilibrium stages was used as an index to predict the fatigue life of the two superalloys. It was found that the fatigue-life predictions using the present model were in good agreement with the experimental results.
UR - http://www.scopus.com/inward/record.url?scp=1842714428&partnerID=8YFLogxK
U2 - 10.1007/s11661-004-0010-2
DO - 10.1007/s11661-004-0010-2
M3 - Article
AN - SCOPUS:1842714428
SN - 1073-5623
VL - 35 A
SP - 839
EP - 848
JO - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
JF - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
IS - 3
ER -