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Titolo:
Study on microstructure and microhardness in surface layer of 20CrMnTi steel carburised at 880 degrees C with and without RE
Autore:
Yan, MF; Liu, ZR;
Indirizzi:
Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China Harbin Inst Technol Harbin Peoples R China 150001 50001, Peoples R China
Titolo Testata:
MATERIALS CHEMISTRY AND PHYSICS
fascicolo: 1, volume: 72, anno: 2001,
pagine: 97 - 100
SICI:
0254-0584(20011001)72:1<97:SOMAMI>2.0.ZU;2-E
Fonte:
ISI
Lingua:
ENG
Keywords:
rare earth; carburising; carbon potential; weight gain; microstructure; microhardness;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
8
Recensione:
Indirizzi per estratti:
Indirizzo: Yan, MF Harbin Inst Technol, Sch Mat Sci & Engn, POB 433, Harbin 150001, Peoples RChina Harbin Inst Technol POB 433 Harbin Peoples R China 150001 RChina
Citazione:
M.F. Yan e Z.R. Liu, "Study on microstructure and microhardness in surface layer of 20CrMnTi steel carburised at 880 degrees C with and without RE", MATER CH PH, 72(1), 2001, pp. 97-100

Abstract

This paper deals with the effect of adding rare earth (RE) in 880 degreesCdrip-feed carburising atmosphere on the microstructure and microhardness profiles in carburised layer, carbon potential and kinetics of weight gain of 20CrMnTi steel. The results show that the incorporation of RE increases the carbon potential, flux of carbon and layer thickness. It is also found that compared with 880 degreesC carburising, a good microstructure with a super fine martensite and less residual austenite were formed based on a lot of dispersed granular carbide precipitates in the surface layer during RE carburising, which resulted in a remarkable increase in microhardness. (C) 2001 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/01/20 alle ore 00:32:20