Fatigue Crack Growth Behavior in Dissimilar Metal Weldment of Stainless Steel and Carbon Steel
Constant amplitude fatigue crack growth (FCG) tests
were performed on dissimilar metal welded plates of Type 316L
Stainless Steel (SS) and IS 2062 Grade A Carbon steel (CS). The
plates were welded by TIG welding using SS E309 as electrode. FCG
tests were carried on the Side Edge Notch Tension (SENT)
specimens of 5 mm thickness, with crack initiator (notch) at base
metal region (BM), weld metal region (WM) and heat affected zones
(HAZ). The tests were performed at a test frequency of 10 Hz and at
load ratios (R) of 0.1 & 0.6. FCG rate was found to increase with
stress ratio for weld metals and base metals, where as in case of
HAZ, FCG rates were almost equal at high ΔK. FCG rate of HAZ of
stainless steel was found to be lowest at low and high ΔK. At
intermediate ΔK, WM showed the lowest FCG rate. CS showed
higher crack growth rate at all ΔK. However, the scatter band of data
was found to be narrow. Fracture toughness (Kc) was found to vary
in different locations of weldments. Kc was found lowest for the
weldment and highest for HAZ of stainless steel. A novel method of
characterizing the FCG behavior using an Infrared thermography
(IRT) camera was attempted. By monitoring the temperature rise at
the fast moving crack tip region, the amount of plastic deformation
was estimated.
[1] H. K. Lee, K. S. Kim, C. M. Kim, "Fracture Resistance of a Steel Weld
Joint Under Fatigue Loading, Engineering Fracture mechanics", 2000.
[2] B. K. Choudhary, M. Roedig and S. L. Mannan, "Fatigue Crack Growth
Behavior of Base Metal, Weld Metal and Heat Affected Zone of Alloy
800 at 823 K", 2004.
[3] S. J. Maddox, "Assessing the Significance of Flaws in Welds Subject to
Fatigue", Welding J., 1974.
[4] Laurent Cretegny, Ashok Saxena, "Fracture Toughness Behavior of
Weldments with Mis-Matched Properties at Elevated Temperature"., Int.
J. Fracture, Vol 92, No. 2, 1998.
[5] B. Bruzek, E. Leidich, "Evaluation of Crack Growth at Weld Interface
between Bronze and Steel", International Journal of Fatigue, 2007.
[6] Zehnder AT, Rosakis Ares J., "Temperature Rise at the Tip of
Dynamically Propagating Cracks: Measurements Using High-speed
Infrared Detectors", Experimental Techniques in Fracture, 1993.
[7] Shockey DA, Kalthoff JF, Klemm W, Winkler S., "Simultaneous
Measurement of Stress Intensity and Toughness for Fast Running Cracks
in Steel", Exp Mech 1983.
[8] Montgomery DG, "The Temperature Wave Method of Determinating
Fracture Toughness Values Due to Crack Propagation", J Material
Science 1975.
[9] "T. Yamauchi, H. Hirano, Examination of Onset of Stable Crack Growth
Under Fracture Toughness Testing of Paper", Journal of Wood Science,
2000.
[10] B.Yang, P.K. Liaw, M. Morrison, C.T. Liub, R.A. Buchanana, J.Y.
Huangc,R.C. Kuo, J.G. Huang, and D.E. Fielden (2005), "Temperature
evolution during fatigue damage", Intermetallics ,13, 419-428.
[11] Jordan Eric, H., "Notch-root plastic response by temperature
measurement", Exp. Mech, 1985.
[1] H. K. Lee, K. S. Kim, C. M. Kim, "Fracture Resistance of a Steel Weld
Joint Under Fatigue Loading, Engineering Fracture mechanics", 2000.
[2] B. K. Choudhary, M. Roedig and S. L. Mannan, "Fatigue Crack Growth
Behavior of Base Metal, Weld Metal and Heat Affected Zone of Alloy
800 at 823 K", 2004.
[3] S. J. Maddox, "Assessing the Significance of Flaws in Welds Subject to
Fatigue", Welding J., 1974.
[4] Laurent Cretegny, Ashok Saxena, "Fracture Toughness Behavior of
Weldments with Mis-Matched Properties at Elevated Temperature"., Int.
J. Fracture, Vol 92, No. 2, 1998.
[5] B. Bruzek, E. Leidich, "Evaluation of Crack Growth at Weld Interface
between Bronze and Steel", International Journal of Fatigue, 2007.
[6] Zehnder AT, Rosakis Ares J., "Temperature Rise at the Tip of
Dynamically Propagating Cracks: Measurements Using High-speed
Infrared Detectors", Experimental Techniques in Fracture, 1993.
[7] Shockey DA, Kalthoff JF, Klemm W, Winkler S., "Simultaneous
Measurement of Stress Intensity and Toughness for Fast Running Cracks
in Steel", Exp Mech 1983.
[8] Montgomery DG, "The Temperature Wave Method of Determinating
Fracture Toughness Values Due to Crack Propagation", J Material
Science 1975.
[9] "T. Yamauchi, H. Hirano, Examination of Onset of Stable Crack Growth
Under Fracture Toughness Testing of Paper", Journal of Wood Science,
2000.
[10] B.Yang, P.K. Liaw, M. Morrison, C.T. Liub, R.A. Buchanana, J.Y.
Huangc,R.C. Kuo, J.G. Huang, and D.E. Fielden (2005), "Temperature
evolution during fatigue damage", Intermetallics ,13, 419-428.
[11] Jordan Eric, H., "Notch-root plastic response by temperature
measurement", Exp. Mech, 1985.
@article{"International Journal of Mechanical, Industrial and Aerospace Sciences:63545", author = "K. Krishnaprasad and Raghu V. Prakash", title = "Fatigue Crack Growth Behavior in Dissimilar Metal Weldment of Stainless Steel and Carbon Steel", abstract = "Constant amplitude fatigue crack growth (FCG) tests
were performed on dissimilar metal welded plates of Type 316L
Stainless Steel (SS) and IS 2062 Grade A Carbon steel (CS). The
plates were welded by TIG welding using SS E309 as electrode. FCG
tests were carried on the Side Edge Notch Tension (SENT)
specimens of 5 mm thickness, with crack initiator (notch) at base
metal region (BM), weld metal region (WM) and heat affected zones
(HAZ). The tests were performed at a test frequency of 10 Hz and at
load ratios (R) of 0.1 & 0.6. FCG rate was found to increase with
stress ratio for weld metals and base metals, where as in case of
HAZ, FCG rates were almost equal at high ΔK. FCG rate of HAZ of
stainless steel was found to be lowest at low and high ΔK. At
intermediate ΔK, WM showed the lowest FCG rate. CS showed
higher crack growth rate at all ΔK. However, the scatter band of data
was found to be narrow. Fracture toughness (Kc) was found to vary
in different locations of weldments. Kc was found lowest for the
weldment and highest for HAZ of stainless steel. A novel method of
characterizing the FCG behavior using an Infrared thermography
(IRT) camera was attempted. By monitoring the temperature rise at
the fast moving crack tip region, the amount of plastic deformation
was estimated.", keywords = "Dissimilar metal weld, Fatigue Crack Growth,
fracture toughness, Infrared thermography.", volume = "3", number = "8", pages = "1011-7", }