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Mechanical Properties Of Quasicrystal Dispersed Al-Li-Cu Alloy

Published online by Cambridge University Press:  10 February 2011

T. Okada ,
T. Nakamura ,
K Mitsugi ,
K Kozawa ,
T Matumura ,
H Ishii ,
Y. Ozu ,
K. Oguri  and
Y Nishi
T. Okada
Affiliation:
Department of Materials Science, Tokai University, 1117 Kita-kaname, Hiratsuka, Kanagawa, 259–1292 JAPAN, am026429@keyaki.cc.u-tokai.ac.jp
T. Nakamura
Affiliation:
Department of Materials Science, Tokai University, 1117 Kita-kaname, Hiratsuka, Kanagawa, 259–1292 JAPAN, am026429@keyaki.cc.u-tokai.ac.jp
K Mitsugi
Affiliation:
Department of Materials Science, Tokai University, 1117 Kita-kaname, Hiratsuka, Kanagawa, 259–1292 JAPAN, am026429@keyaki.cc.u-tokai.ac.jp
K Kozawa
Affiliation:
Department of Materials Science, Tokai University, 1117 Kita-kaname, Hiratsuka, Kanagawa, 259–1292 JAPAN, am026429@keyaki.cc.u-tokai.ac.jp
T Matumura
Affiliation:
Department of Materials Science, Tokai University, 1117 Kita-kaname, Hiratsuka, Kanagawa, 259–1292 JAPAN, am026429@keyaki.cc.u-tokai.ac.jp
H Ishii
Affiliation:
Department of Materials Science, Tokai University, 1117 Kita-kaname, Hiratsuka, Kanagawa, 259–1292 JAPAN, am026429@keyaki.cc.u-tokai.ac.jp
Y. Ozu
Affiliation:
Department of Materials Science, Tokai University, 1117 Kita-kaname, Hiratsuka, Kanagawa, 259–1292 JAPAN, am026429@keyaki.cc.u-tokai.ac.jp
K. Oguri
Affiliation:
Department of Materials Science, Tokai University, 1117 Kita-kaname, Hiratsuka, Kanagawa, 259–1292 JAPAN, am026429@keyaki.cc.u-tokai.ac.jp
Y Nishi
Affiliation:
Department of Materials Science, Tokai University, 1117 Kita-kaname, Hiratsuka, Kanagawa, 259–1292 JAPAN, am026429@keyaki.cc.u-tokai.ac.jp
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Abstract

To apply the ductile structural materials, the quasicrystal dispersion in aluminum alloys is one of effective methods. We have investigated mechanical properties of quasicrystal dispersed Al- Li-Cu alloy prepared by the twin-type piston anvil apparatus. The slow cooled samples are hard and ductile. The evaluated values of brittleness are from 6.0 to 14 erg for Ef, from 0.52 to 0.73MNm−3/2 for K1c and from 5.5 to 7.7 Nm−1 for Gic for the fastest and slowest cooled samples, respectively. The hardness of the quasicrystal dispersed Al-Li-Cu alloy is higher than that of the other commercial aluminum alloys. Based on the relationship between Vickers hardness and proof stress of aluminum alloys, we estimate the specific strength of Al-Li-Cu quasicrystal alloy. The maximum value is the higher than that of Ti alloys.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 553: Symposium LL – Quasicrystals , 1998 , 507
Copyright
Copyright © Materials Research Society 1999

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References

REFERENCES

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