Fatigue Behavior of Weld-Repaired High Strength Low Alloy Steel

Chun Guo Zhang; Stefan van der Vyver; Xiao Zhi Hu

doi:10.4028/www.scientific.net/AMR.275.39

Paper Titles

Fatigue Strength of Ultrafine Grained Copper Treated by Post-ECAP Mild Annealing
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Experimental Study on Theory of Critical Distance Applied to the Prediction of Fatigue from Notches
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Effects of Thermal Exposure on Microstructure and Mechanical Properties of Ni Based Superalloy GTD111
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Effects of Replication on Measured S-N Curves of Metals
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Fatigue Behavior of Weld-Repaired High Strength Low Alloy Steel
p.39

An Analysis of Fatigue Strength of Notched Components
p.43

Thermal Shock Properties of Ti(Al,O)/Al₂O₃ and TiAl(O)/Al₂O₃ Composite Coatings
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An Impregnation Technique for Crack Identification Following Uniaxial Tension Tests
p.51

An Analysis of the Bonding Energy through Pull-Out Tests for Aerated Concrete with Various Steel Strip Geometries
p.55

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Fatigue Behavior of Weld-Repaired High Strength Low Alloy Steel

Abstract:

Fatigue crack growth properties of Bisplate 80, a high strength low alloy (HSLA) steel, with extensive weld repair have been studied. Fatigue cracking becomes relevant if extensive abrasive wear damage is repaired through welding because of the change in material properties. In this study, extended compact tension (E-CT) specimens of Bisplate 80 with and without weld repair, and with and without a buffer layer between the weld and parent material are used to evaluate the fatigue crack growth behaviour. Fatigue crack growth rates are closely monitored at the interface regions between the weld, buffer layer and parent metal. Detailed SEM observations are also conducted at those locations. It is expected that the experimental results can provide useful information on the optimum weld repair conditions of HSLA.