Abstract
The formation behaviour of a blister in a die cast aluminium alloy was observed by employing a combined methodology of in situ three-dimensional observation using X-ray microtomography and image based simulation. It has been revealed, via a reverse approach based on the simulation, that nitrogen and carbon dioxide gases fill the blister nucleus. Spontaneous growth of the blister nucleus occurs through creep deformation of the surrounding aluminium due to the blister nucleus’ high internal gas pressure. This internal gas pressure also induces hydrogen precipitation in the form of micropores, which undergo steady growth in a spherical shell region around the blister nucleus. The selective growth of the micropores is attributable to the elevation of hydrostatic stress in directions parallel to the casting surface, thereby promoting the expansion of the blister, also parallel to the casting surface, through the absorption of surrounding micropores into the blister nucleus.
| Original language | English |
|---|---|
| Pages (from-to) | 369-377 |
| Number of pages | 9 |
| Journal | International Journal of Cast Metals Research |
| Volume | 27 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - Jan 1 2014 |
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All Science Journal Classification (ASJC) codes
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
Cite this
Formation behaviour of blister in cast aluminium alloy. / Toda, Hiroyuki; Qu, P. C.; Ito, S.; Shimizu, K.; Uesugi, K.; Takeuchi, A.; Suzuki, Y.; Kobayashi, M.
In: International Journal of Cast Metals Research, Vol. 27, No. 6, 01.01.2014, p. 369-377.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Formation behaviour of blister in cast aluminium alloy
AU - Toda, Hiroyuki
AU - Qu, P. C.
AU - Ito, S.
AU - Shimizu, K.
AU - Uesugi, K.
AU - Takeuchi, A.
AU - Suzuki, Y.
AU - Kobayashi, M.
PY - 2014/1/1
Y1 - 2014/1/1
N2 - The formation behaviour of a blister in a die cast aluminium alloy was observed by employing a combined methodology of in situ three-dimensional observation using X-ray microtomography and image based simulation. It has been revealed, via a reverse approach based on the simulation, that nitrogen and carbon dioxide gases fill the blister nucleus. Spontaneous growth of the blister nucleus occurs through creep deformation of the surrounding aluminium due to the blister nucleus’ high internal gas pressure. This internal gas pressure also induces hydrogen precipitation in the form of micropores, which undergo steady growth in a spherical shell region around the blister nucleus. The selective growth of the micropores is attributable to the elevation of hydrostatic stress in directions parallel to the casting surface, thereby promoting the expansion of the blister, also parallel to the casting surface, through the absorption of surrounding micropores into the blister nucleus.
AB - The formation behaviour of a blister in a die cast aluminium alloy was observed by employing a combined methodology of in situ three-dimensional observation using X-ray microtomography and image based simulation. It has been revealed, via a reverse approach based on the simulation, that nitrogen and carbon dioxide gases fill the blister nucleus. Spontaneous growth of the blister nucleus occurs through creep deformation of the surrounding aluminium due to the blister nucleus’ high internal gas pressure. This internal gas pressure also induces hydrogen precipitation in the form of micropores, which undergo steady growth in a spherical shell region around the blister nucleus. The selective growth of the micropores is attributable to the elevation of hydrostatic stress in directions parallel to the casting surface, thereby promoting the expansion of the blister, also parallel to the casting surface, through the absorption of surrounding micropores into the blister nucleus.
UR - http://www.scopus.com/inward/record.url?scp=84919448573&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84919448573&partnerID=8YFLogxK
U2 - 10.1179/1743133614Y.0000000123
DO - 10.1179/1743133614Y.0000000123
M3 - Article
VL - 27
SP - 369
EP - 377
JO - International Journal of Cast Metals Research
JF - International Journal of Cast Metals Research
SN - 1364-0461
IS - 6
ER -