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| Fatigue Behavior of a 340MPa Grade Hot-Dip Galvanized High Strength Low Alloy Steel |
| LIU Hua-sai1,TENG Hua-xiang1,2,WANG Yan-chao1,KUANG Shuang1,LI Xiang-yu1,ZHANG Hao1 |
1. Strip Technology Departments, Shougang Research Tnstitute of Technology, Beijing 100043， China
2. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083， China |
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Abstract S-N curve of hot-dip galvanized high strength low alloy steel with a thickness of 1.75 mm was drawn using tension-tension fatigue test, and the fracture behaviors were also analyzed using scanning electron microscopy. The fatigue limit of the HC340LAD+Z sheet is 190 MPa with the frequency of 15 Hz, and the crack initiation zone is on the surface of the sheet. The fracture morphology of zinc coating is more obvious near the fast fracture zone than near the crack initiation zone.
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Received: 08 May 2013
Published: 20 February 2014
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2014, Vol. 49 
