Effect of loading rate on absorbed energy and fracture surface area in wrought aluminum alloys

Tomohiko Mukaiyama, Mitsuo Niinomi, Hiroyuki Toda, Toshikazu Akahori, Toshiro Kobayashi, Isamu Yamamoto

研究成果: Contribution to journalArticle

抜粋

The effect of loading rate on absorbed energy and fracture surface area of three types of wrought aluminum alloys, namely high toughness 5083-O and 6061-T651 alloys and low toughness 7075-T6 alloy are studied. A laser displacement measuring equipment and a scanning laser microscope are used in order to measure three-dimensional geometry of the fracture surface. Shear lip and plastic hinge can be observed in 5083-O and 6061-T651 aluminum alloys. According to a measuring region, the calibration factor K is notably different. Moreover, the calibrated fracture surface area of each fracture geometry changes considerably with increasing loading rate. On the other hand, in 7075-T6 aluminum alloy, macroscopic fracture geometries are not clearly defined, and almost no difference appears in the calibration factor K within the same fracture surface. Moreover, calibrated whole surface area increases linearly with increasing loading rate. In any aluminum alloys, the tends in the loading rate change of calibrated whole fracture surface area, A W, and the total absorbed energy, E t, with loading rate are similar each other. Therefore, the change of fracture surface area is one of the main factors that affect the change of absorbed energy.

元の言語英語
ページ(範囲)15-20
ページ数6
ジャーナルKeikinzoku/Journal of Japan Institute of Light Metals
56
発行部数1
DOI
出版物ステータス出版済み - 1 1 2006
外部発表Yes

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

フィンガープリント Effect of loading rate on absorbed energy and fracture surface area in wrought aluminum alloys' の研究トピックを掘り下げます。これらはともに一意のフィンガープリントを構成します。

  • これを引用