Quantitative evaluation of porosity effect on fatigue strength of high pressure die cast aluminum alloy (Part 1, experimental investigation for effect of porosity and casting surface)

Osamu Kuwazuru, Yozo Murata, Takao Utsunomiya, Yoshihiko Hangai, Takayuki Yano, Sujit Bidhar, Yoshinori Shiihara, Soichiro Kitahara, Nobuhiro Yoshikawa

研究成果: Article査読

2 被引用数 (Scopus)

抄録

Effect of casting defects on the fatigue strength of die cast aluminum alloy was addressed through the tension-compression fatigue test and the X-ray CT inspection, which revealed the amount of porosity included in the specimen. Six types of casting condition were employed to examine the effect of different porosity. Most of fatigue crack sources were the pores. The porosity volume fraction was calculated for all specimens from the three-dimensional X-ray CT images. The fatigue limit of each specimen type was estimated from the fatigue test results. The correlations among fatigue limit, porosity volume fraction, Vickers hardness, and dendrite arm spacing were evaluated, and the result showed that the porosity volume fraction most dominantly affected the fatigue limit in the averaged sense.

本文言語English
ページ(範囲)39-47
ページ数9
ジャーナルNihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
77
773
DOI
出版ステータスPublished - 2011
外部発表はい

ASJC Scopus subject areas

  • 材料科学(全般)
  • 材料力学
  • 機械工学

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