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Titolo:
Microstructure and wear characteristics of rapidly solidified Al-Pb-Cu alloys
Autore:
Kim, HM; Kim, TS; Suryanarayana, C; Chun, BS;
Indirizzi:
Colorado Sch Mines, Dept Met & Mat Engn, Golden, CO 80401 USA Colorado SchMines Golden CO USA 80401 t & Mat Engn, Golden, CO 80401 USA Chungnam Natl Univ, RASOM, Taejon 305764, South Korea Chungnam Natl Univ Taejon South Korea 305764 Taejon 305764, South Korea
Titolo Testata:
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
fascicolo: 1, volume: 287, anno: 2000,
pagine: 59 - 65
SICI:
0921-5093(20000731)287:1<59:MAWCOR>2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Soggetto:
LEADED ALUMINUM-ALLOYS; BEARING ALLOYS; FRACTURE;
Keywords:
rapid solidification; Al-Pb-Cu alloys; microstructure; wear;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
21
Recensione:
Indirizzi per estratti:
Indirizzo: Suryanarayana, C Colorado Sch Mines, Dept Met & Mat Engn, Golden, CO 80401USA Colorado Sch Mines Golden CO USA 80401 den, CO 80401 USA
Citazione:
H.M. Kim et al., "Microstructure and wear characteristics of rapidly solidified Al-Pb-Cu alloys", MAT SCI E A, 287(1), 2000, pp. 59-65

Abstract

The microstructure and wear properties of rapidly solidified Al-XPb (X = 10, 16 and 20 wt.%) and Al-16Pb-Y (Y = 4Cu or 4Cu-1Mg) alloy powders were investigated. In order to overcome the constraint of the miscibility gap between Al and Pb under equilibrium conditions, both in the solid and the liquid states, the alloys were rapidly solidified to produce them in a segregation-free condition. Although the Pb particles showed relatively fine dispersion in the Al matrix in all the alloys by this process, the Al-16Pb alloy was found to have the most favorable microstructure with discrete Pb particles of about 0.5 mu m size. With the addition of Cu and Cu-Mg to Al-16Pb, cellular structures were newly formed, not seen in the binary AI-Pb alloys. Wear properties of the Al-Pb binary alloys measured as a function of the sliding speed, sliding distance, and applied load showed that the Al-16Pb alloy has the best wear resistance, as expected from the fine microstructural features in this alloy. The wear resistance of the alloys containing Cu- andCu-Mg was higher than that of the Al-16Pb alloy, due to the matrix strengthening by precipitation hardening. The wear mechanism was identified by examining the wear traces and wear debris. (C) 2000 Elsevier Science S.A. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/04/20 alle ore 03:46:48