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CHANG Bao-hua, DU Dong, SUI Bo, Z. Wang, Y. Zhou. Effect of forging force on fatigue behavior of spot-welded joints of aluminium alloy[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2005, (8): 5-8.
Citation: CHANG Bao-hua, DU Dong, SUI Bo, Z. Wang, Y. Zhou. Effect of forging force on fatigue behavior of spot-welded joints of aluminium alloy[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2005, (8): 5-8.
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Effect of forging force on fatigue behavior of spot-welded joints of aluminium alloy

  • 1.

    Department of Mechanical Engineering, Key Laboratory for Advanced Manufacturing by Materials Processing Technology, Tsinghua University, Beijing, 100084, China

  • 2.

    Dept. of Materials Science and Engineering, University of Toronto, Toronto, Ontario, M5S 1A4, Canada

  • 3.

    Dept. of Mechanical Engineering, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada

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  • Received Date: September 21, 2004
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    • Abstract
  • Using experimental and finite element analysis methods, the effects of electrode forging force are investigated on residual stress and fatigue behavior of spot welded aluminum alloy joints. Results show that forging force significantly reduces the residual stresses in the heat affected zone (HAZ); the fatigue cracks no longer initiate from the HAZ, while all cracks begin from the edge of nuggets. The mitigation of residual stress decreases the driving force for crack propagation, and leads to higher fatigue strength.
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