Effects of Shot Blasting on Corrosion Properties after Electrodeposition and Fatigue Properties of Arc Welds in Automotive Steel Sheets

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  • Fujimoto Hiroki
    Steel Research Laboratories, Nippon Steel & Sumitomo Metal Corporation
  • Akioka Koji
    Steel Research Laboratories, Nippon Steel & Sumitomo Metal Corporation
  • Tokunaga Masatoshi
    Steel Research Laboratories, Nippon Steel & Sumitomo Metal Corporation

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<p>In this study, we investigated the effect of shot blasting on the corrosion properties after electrodeposition and the fatigue properties of the arc welds in automotive steel sheets. The corrosion properties of arc welds after electrodeposition were significantly improved by shot blasting due to the removal of slag and fume, which can cause painting defects. Also, the fatigue strength of welded joints was enhanced by shot blasting, because the mean stress effect due to compressive residual stress improved the fatigue properties. These results suggest that shot blasting has the potential to reduce the thickness of arc welded steel parts in automobile chassis.</p><p> </p><p>This Paper was Originally Published in Japanese in J. JSTP 58 (2017) 299–303.</p>

収録刊行物

  • MATERIALS TRANSACTIONS

    MATERIALS TRANSACTIONS 58 (12), 1715-1720, 2017

    公益社団法人 日本金属学会

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