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Development Of High-Strength Aluminum-Based Alloys By Synthesis Of New Multicomponent Quasicrystals

Published online by Cambridge University Press:  10 February 2011

A. Inoue  and
H. M. Kimura
A. Inoue
Affiliation:
Institute for Materials Research, Tohoku University, Sendai 980–8577, Japan, ainoue@imr. tohoku. ac.jp
H. M. Kimura
Affiliation:
Institute for Materials Research, Tohoku University, Sendai 980–8577, Japan, ainoue@imr. tohoku. ac.jp
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Abstract

By the control of composition, clustered atomic configuration and stability of the supercooled liquid in the rapid solidification and powder metallurgy processes, high-strength Al-based bulk alloys containing nanoscale nonperiodic phases were produced in AI-Ln-LTM, AI-ETM-LTM and Al-(V, Cr, Mn)-LTM (Ln=lanthanide metal, LTM=VII and VIII group metals, ETM=IV to VI group metals) alloys containing high Al contents of 92 to 95 at%. The nonperiodic phases are composed of amorphous or icosahedral (I) phase. In particular, the Al-based bulk alloys consisting of nanoscale I particles surrounded by Al phase exhibit much better mechanical properties as compared with commercial Al base alloys. The success of producing the Al-based alloys with good engineering properties by use of I phase is important for future development of I-based alloys as practical materials.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 553: Symposium LL – Quasicrystals , 1998 , 495
Copyright
Copyright © Materials Research Society 1999

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