Influences of spatial distribution of Si particles on crack propagation in model Al-Si cast alloys

Seishi Nishido, Lihe Qian, Hiroyuki Toda, Toshiro Kobayashi, Mitsuo Niinomi, Toshikazu Akahori

研究成果: Article査読

2 被引用数 (Scopus)

抄録

In-situ SEM observation has been used to characterize crack propagation behaviors and microscopic damage evolution at Si particles in three model hypoeutectic Al-Si cast alloys with different eutectic microstructures. It was clarified that the extents of damage and crack propagation path are significantly affected by the microstructures. A crack propagates in an eutectic region in a gravity cast alloy with dendritic a phase. Meanwhile, in the case of a rheo-cast alloy, a crack often propagates into α phases. Generally, the observed tendencies appear to be dominated by the fundamental crack-tip shielding/anti-shielding behaviors. However, the actual crack paths can not be fully assessed only from the experimental efforts. The crack propagation simulations are therefore performed for this purpose. Similar complicated crack propagation paths are well reproduced in the simulations, thereby providing mechanistic insights for the crack deflection behaviors.

本文言語English
ページ(範囲)75-81
ページ数7
ジャーナルKeikinzoku/Journal of Japan Institute of Light Metals
55
2
DOI
出版ステータスPublished - 2005 2月

ASJC Scopus subject areas

  • 材料力学
  • 機械工学
  • 金属および合金
  • 材料化学

フィンガープリント

「Influences of spatial distribution of Si particles on crack propagation in model Al-Si cast alloys」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル