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Influence of Coating Microstructure on the Fatigue Properties of Zinc Coated Sheet Steels
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English
Abstract
The influence of coatings on fatigue behavior has been examined for the following commercially produced sheet steels: uncoated titanium stabilized interstitial-free (IF); electrogalvanized titanium stabilized IF; hot-dip galvanized aluminum killed, drawing quality (AKDQ); and galvannealed AKDQ. Fully reversed bending fatigue tests were conducted at ambient temperature on Krouse-type flexural fatigue machines. A dependence of crack development was observed and correlated to the microstructure and properties of the different coatings. Furthermore, a functional design relationship for each material was determined through stress-life analysis. The experimentally determined fatigue properties were compared to conventional estimates based on tensile properties which ignore coating effects. The results of this work suggest that ductile coatings may enhance fatigue resistance, while brittle coatings may reduce fatigue life. The effects of galvannealed, galvanized, and electrogalvanized coatings are evident in the fracture characteristics, but do not affect the fatigue properties to a degree critical for design considerations for the specific steel grades examined.
Authors
Citation
Glennon, J., Speer, J., and Matlock, D., "Influence of Coating Microstructure on the Fatigue Properties of Zinc Coated Sheet Steels," SAE Technical Paper 980955, 1998, https://doi.org/10.4271/980955.Also In
Steel Sheet and Steel Bar Products and Processing for Automotive Applications
Number: SP-1349; Published: 1998-02-13
Number: SP-1349; Published: 1998-02-13
References
- Boardman B.E. Crack Initiation Fatigue - Data, Analysis, Trends, and Estimation SAE Technical Paper 820682 , SAE Fatigue Conference & Exposition Dearborn, MI April 1982
- Boardman B.E. Fatigue Resistance of Steels in Metals Handbook 10th Properties and Selection 1 ASM International Materials Park, OH 1989 673 688
- Mitchell M.R. Fundamentals of Modern Fatigue Analysis for Design Fatigue and Microstructure ASM International Materials Park, OH 1978 385 409
- Bergengren Y. Melander A. An Experimental and Theoretical Study of the Fatigue Properties of Hot-Dip Galvanized High-Strength Sheet Steel International Journal of Fatigue 14 3 May 1992 154 162
- Nilsson T. Engberg G. Trogen H. Fatigue Properties of Hot-Dip Galvanized Steels Scandinavian Journal of Metallurgy 18 1989 166 175
- Swanger W.H. France R.D. Effect of Zinc Coatings on the Endurance Properties of Steel ASTM: Proceedings of the Thirty-Fifth Annual Meeting ASTM Philadelphia, PA December 1932 430 452
- Chernenkoff R.A. Davies R.G. Krause A.R. Fatigue Characteristics of Galvanneal Steel Sheet Interstitial Free Steel Sheet: Processing, Fabrication and Properties Collins L.E. Baragar D.L. Canadian Institute of Mining, Metallurgy, and Petroleum 1991 215 222
- Gallo E.E. Friction and Formability of Hot-Dip Galvanneal Interstitial-Free Sheet Steel Colorado School of Mines Golden, CO November 1995
- Haruff J.P. The Effects of Test Conditions on the Frictional Behavior of Sheet Steels Colorado School of Mines Golden, CO March 1994
- ASTM Designation B-593-85 Standard Method for Bending Fatigue Testing for Copper Alloy Spring Materials 1990 687 689
- ASTM Committee E-9 on Fatigue Manual on Fatigue Testing ASTM Philadelphia, PA 1949 9 12 30 34
- Glennon J.R. Fatigue Behavior of Aluminum Killed, Drawing Quality and Interstitial-Free Sheet Steels Colorado School of Mines Golden, CO early summer 1998
- Lazik S. Esling C. Wegria J. Cracking in Zinc Layers on Continuous Galvanized Sheets Textures and Microstructures 23 1995 131 147
- Leonard R.W. Precoated Sheet Steels Metals Handbook: Carbon and Low Alloy Steels 10th 1 212 225
- Jordan C.E. Marder A.R. Morphology Development in Hot-Dip Galvanneal Coatings Metallurgical and Materials Transactions A 25A May 1994 937 947
- Raghavan K.S. Speer J.G. Interaction of Coating Type and Deformation Mode on Formability of Automotive Sheet Steels 35 th MWSP Conference Proceedings XXXI 1994 107 123