High pressure induced crystallization of rapidly solidified Al---Fe and Al---Mn quasi-crystalline alloysstar


Autoria(s): Gopal, ESR; Baranidharan, S; Sekhar, JA
Data(s)

01/03/1988

Resumo

The presence of phases showing icosahedral point symmetry was reported by Shechtman, Blech, Gratias and Cahn in rapidly quenched alloys of Al---Mn, Al---Fe and Al---Cr, and subsequently many other splat-cooled alloys with the i phase have been reported. In this paper we present the first results of high pressure experiments carried out on Al---Fe and Al---Mn quasi-crystals. The experiments performed at room temperature showed irreversible quasi-crystal-to-crystal transitions in Al---Mn and Al---Fe alloys. The transition pressures are 49 kbar for Al78Mn22, 93 kbar for Al86Mn14, 79 kbar for Al86Fe14, 54 kbar for Al82Fe18 and 108 kbar for Al75Fe25. The high pressure phases are found to be the equilibrium phases.

Formato

application/pdf

Identificador

http://eprints.iisc.ernet.in/21977/1/PDF.pdf

Gopal, ESR and Baranidharan, S and Sekhar, JA (1988) High pressure induced crystallization of rapidly solidified Al---Fe and Al---Mn quasi-crystalline alloysstar. In: Materials Science and Engineering, 99 (1-2). pp. 413-416.

Publicador

Elsevier

Relação

http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B759M-48HS2PK-14S&_user=512776&_rdoc=1&_fmt=&_orig=search&_sort=d&_docanchor=&view=c&_acct=C000025298&_version=1&_urlVersion=0&_userid=512776&md5=ab69c56339e7329146ef75aa417dfa06

http://eprints.iisc.ernet.in/21977/

Palavras-Chave #Physics
Tipo

Journal Article

PeerReviewed