FATIGUE FRACTOGRAPHS FOR BUTT-WELDED JOINTS OF A5083 ALUMINUM ALLOY.

Chitoshi Masuda*, Satoshi Nishijima, Masuo Shimodaira

*この研究の対応する著者

研究成果査読

抄録

A fractographic study has been performed on fatigue fractured butt-welded joints of an aluminum alloy, frequently used for low temperature applications. The area fraction of crystallographic facets, which takes the maximum in the lower range of stress intensity factor, DELTA K, decreased monotonically with an increase in DELTA K, and became zero at DELTA K of approximately 9 MPa m**1**/**2. The tendency of this evolution was found to be the same, irrespective of base metal or weld metal, as well as for the position of the facet which could be near or deep under the specimen surface. For higher values of DELTA K, the coverage of the striation facets became predominant, and the striation spacing was linearly correlated with DELTA K on log-log co-ordinates regardless of the metallurgical differences. The crack plane and propagation direction indicated that the striation formation mechanism could be explained by the model proposed R. M. Pelloux.

本文言語English
ページ(範囲)816-821
ページ数6
ジャーナルZairyo/Journal of the Society of Materials Science, Japan
30
335
出版ステータスPublished - 1981 8

ASJC Scopus subject areas

  • 化学工学(その他)
  • 金属および合金
  • ポリマーおよびプラスチック

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