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Titolo:
Microstructural characteristics and wear resistance of electromagnetic casting aluminum alloys
Autore:
Kim, SW; Hao, H; Lee, UJ; Woo, KD; Jin, JZ;
Indirizzi:
Chonbuk Natl Univ, Res Inst Adv Mat Dev, Div New Mat Engn, Chonju 561756, South Korea Chonbuk Natl Univ Chonju South Korea 561756 , Chonju 561756, South Korea Dalian Univ Technol, Res Ctr Foundry Engn, Dalian 116023, Peoples R China Dalian Univ Technol Dalian Peoples R China 116023 16023, Peoples R China
Titolo Testata:
MATERIALS TRANSACTIONS
fascicolo: 9, volume: 42, anno: 2001,
pagine: 1952 - 1958
SICI:
1345-9678(200109)42:9<1952:MCAWRO>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Keywords:
electromagnetic casting; direct chill casting; aluminum alloys; microstructure; wear resistance;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
11
Recensione:
Indirizzi per estratti:
Indirizzo: Kim, SW Chonbuk Natl Univ, Res Inst Adv Mat Dev, Div New Mat Engn, Chonju 561756, South Korea Chonbuk Natl Univ Chonju South Korea 561756 561756, South Korea
Citazione:
S.W. Kim et al., "Microstructural characteristics and wear resistance of electromagnetic casting aluminum alloys", MATER TRANS, 42(9), 2001, pp. 1952-1958

Abstract

Direct chill casting (DCC) has some demerits such as oscillation and subsurface segregation. Electromagnetic casting (EMC) technology was used to solve these problems. The electromagnetic force prevented the metal from touching the mold, which contributes to leaving the ingot surface very smooth. Moreover, the electromagnetic stirring and joule heating made the structure become more homogeneous over the entire cross-section. It results in the EMC ingots having distinct merits. Tbe 2024 and 5182 Al alloys were made using EMC and DCC technology. Parts of them were used for specimens. OM and SEMwere carried out to analyze the microstructures. Hardness and wear resistance tests were carried out in order to investigate mechanical properties. On the other hand, the solution and aging treatment effects on mechanical charaterization were compared between EMC and DCC ingots. Micrographs show that EMC ingots have a very fine and uniform grain structure, which makes theEMC ingots have high strength and good ductility. The EMC specimens have twice the hardness of DCC specimens in the as-east state. They also express excellent wear resistance characteristics.

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Documento generato il 29/09/20 alle ore 00:06:39