Abstract
Superplastic deformation occurs at high temperatures and requires the presence of a very small grain size. Experiments demonstrate that equal-channel angular (ECA) pressing is capable of introducing ultrafine grain sizes in pure Al, Al-Mg and Al-Zr alloys, with grain sizes lying in the sub-micrometer range for the alloys. It is shown by static annealing that these ultrafine grain sizes are not stable in pure Al and the Al-Mg alloys at elevated temperatures but in the Al-Zr alloys the grains remain small up to temperatures of ≈600 K.
| Original language | English |
|---|---|
| Pages (from-to) | 188-196 |
| Number of pages | 9 |
| Journal | Materials Science and Engineering A |
| Volume | 265 |
| Issue number | 1-2 |
| Publication status | Published - Jun 15 1999 |
Fingerprint
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
Cite this
Thermal stability of ultrafine-grained aluminum in the presence of Mg and Zr additions. / Hasegawa, Hideaki; Komura, Shogo; Utsunomiya, Atsushi; Horita, Zenji; Furukawa, Minoru; Nemoto, Minoru; Langdon, Terence G.
In: Materials Science and Engineering A, Vol. 265, No. 1-2, 15.06.1999, p. 188-196.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Thermal stability of ultrafine-grained aluminum in the presence of Mg and Zr additions
AU - Hasegawa, Hideaki
AU - Komura, Shogo
AU - Utsunomiya, Atsushi
AU - Horita, Zenji
AU - Furukawa, Minoru
AU - Nemoto, Minoru
AU - Langdon, Terence G.
PY - 1999/6/15
Y1 - 1999/6/15
N2 - Superplastic deformation occurs at high temperatures and requires the presence of a very small grain size. Experiments demonstrate that equal-channel angular (ECA) pressing is capable of introducing ultrafine grain sizes in pure Al, Al-Mg and Al-Zr alloys, with grain sizes lying in the sub-micrometer range for the alloys. It is shown by static annealing that these ultrafine grain sizes are not stable in pure Al and the Al-Mg alloys at elevated temperatures but in the Al-Zr alloys the grains remain small up to temperatures of ≈600 K.
AB - Superplastic deformation occurs at high temperatures and requires the presence of a very small grain size. Experiments demonstrate that equal-channel angular (ECA) pressing is capable of introducing ultrafine grain sizes in pure Al, Al-Mg and Al-Zr alloys, with grain sizes lying in the sub-micrometer range for the alloys. It is shown by static annealing that these ultrafine grain sizes are not stable in pure Al and the Al-Mg alloys at elevated temperatures but in the Al-Zr alloys the grains remain small up to temperatures of ≈600 K.
UR - http://www.scopus.com/inward/record.url?scp=0000111421&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0000111421&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0000111421
VL - 265
SP - 188
EP - 196
JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
SN - 0921-5093
IS - 1-2
ER -