鋳造アルミニウム合金のFSW継手およびMIG溶接継手の疲労強度特性 Fatigue properties of cast aluminum alloy joints by FSW and MIG welding

この論文にアクセスする

この論文をさがす

著者

抄録

Fatigue properties of cast aluminum welded joints by friction stir welding (FSW) and MIG welding were investigated, comparing with that of the base plate. Fatigue crack propagation tests for the <I>da/d</I>N-<I>ΔK</I> relation and bending fatigue tests for the S-N relation were performed. Fatigue cracks in both FSW and MIG specimens were accelerated, when the fatigue crack tip reached the stir zone or the weld metal. This behavior was discussed based on the crack closure induced by the crack surface roughness and the residual stress. In the S-N properties, the influence of specimen surface finishing on fatigue life was also examined. Fatigue lives of the FSW and MIG specimens in the "as weld" condition were in the range of the largely scattered base plate fatigue lives, in spite of the different fatigue crack initiation site in each specimen such as the porosity in the base plate, the tool mark bottom in the FSW and the weld toe in the MIG. The FSW specimens with the polished surface showed the particular improvement in fatigue strength for finite fatigue life.

収録刊行物

  • 溶接学会論文集 : quarterly journal of the Japan Welding Society

    溶接学会論文集 : quarterly journal of the Japan Welding Society 28(1), 149-157, 2010-12-31

    一般社団法人 溶接学会

参考文献:  14件中 1-14件 を表示

各種コード

  • NII論文ID(NAID)
    10030149895
  • NII書誌ID(NCID)
    AN1005067X
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    02884771
  • データ提供元
    CJP書誌  J-STAGE 
ページトップへ