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Titolo:
Effect of dispersed particles on microstructure evolved in iron under mechanical milling followed by consolidating rolling
Autore:
Belyakov, A; Sakai, Y; Hara, T; Kimura, Y; Tsuzaki, K;
Indirizzi:
Natl Res Inst Met, Frontier Res Ctr Struct Mat, Tsukuba, Ibaraki 3050047, Japan Natl Res Inst Met Tsukuba Ibaraki Japan 3050047 a, Ibaraki 3050047, Japan
Titolo Testata:
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
fascicolo: 7, volume: 32, anno: 2001,
pagine: 1769 - 1776
SICI:
1073-5623(200107)32:7<1769:EODPOM>2.0.ZU;2-R
Fonte:
ISI
Lingua:
ENG
Soggetto:
STAINLESS-STEEL; DEFORMATION; POWDER;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
13
Recensione:
Indirizzi per estratti:
Indirizzo: Belyakov, A Natl Res Inst Met, Frontier Res Ctr Struct Mat, Tsukuba, Ibaraki 3050047, Japan Natl Res Inst Met Tsukuba Ibaraki Japan 3050047 050047, Japan
Citazione:
A. Belyakov et al., "Effect of dispersed particles on microstructure evolved in iron under mechanical milling followed by consolidating rolling", MET MAT T A, 32(7), 2001, pp. 1769-1776

Abstract

The microstructure and the strength of an iron mechanically milled with various amounts of oxygen (i.e., 0.2, 0.6, and 1.5 mass pct) were studied. The samples were subjected to a mechanical milling in an argon atmosphere for100 hours followed by consolidating bar rolling to a total reduction of about 86 pet at 700 degreesC. The microstructure of the steels sensitively changed depending on the oxygen content, i.e., on the volume fraction of the oxide particles. The average grain size decreased from about 0.7 to 0.2 mumwith an increase in the amount of oxygen. Moreover, the misorientation distributions of the grain boundaries were different in the samples with various amounts of oxygen. A relatively large fraction of low-angle boundaries arranged crosswise to the rolling axis was registered in the samples with 0.2 and 0.6 pct oxygen, while the near random distribution of the boundary misorientations was obtained in the specimens with 1.5 pct oxygen. The effectof dispersed particles on the structure evolution and the relationship between microstructures and some mechanical properties are discussed.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 31/03/20 alle ore 10:03:44