Amelioration Des Proprietes Des Fontes Alliees Travaillant a L'usure Et Aux Chocs
Identifieur interne : 001328 ( Istex/Corpus ); précédent : 001327; suivant : 001329Amelioration Des Proprietes Des Fontes Alliees Travaillant a L'usure Et Aux Chocs
Auteurs : A. Hadji ; M. Baccouche ; A. LemmouiSource :
- Annales de chimie - Sciences des materiaux [ 0151-9107 ] ; 1999.
Abstract
Improvement of the properties of alloyed cast iron exposed to wear and to shocks. White alloyed cast irons are particularly suitable to applications which require a good resistance to abrasion. The predominance of carbides in their microstructure endows them with a high hardness which is necessary to crush other materials without being damaged. The matrix can be adjusted by controlling the concentration of addition elements and by applying (whenever necessary) a heat treatment. The chemical composition regulates the quantity of eutectic and primary carbides and determines their morphology. In this study we consider the possibilities of acting on the microstructure (eutectic and primary carbides matrix). We have made quantitative and qualitative modifications in order to optimise the chemical composition, with the main objective of reducing costly elements (Cr, Mo) and of improving plasticity characteristics by the introduction of Cu, without inducing graphitization. The reduction of these costly element (Cr, Mo) and that of C, with the increase of Mn, sensibly modifies the structural morphology; it also improves the mechanical characteristics of the cast iron and thus enables the choice of the chemical composition of chock-resistant cast-iron.
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DOI: 10.1016/S0151-9107(99)80033-6
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White alloyed cast irons are particularly suitable to applications which require a good resistance to abrasion. The predominance of carbides in their microstructure endows them with a high hardness which is necessary to crush other materials without being damaged. The matrix can be adjusted by controlling the concentration of addition elements and by applying (whenever necessary) a heat treatment. The chemical composition regulates the quantity of eutectic and primary carbides and determines their morphology. In this study we consider the possibilities of acting on the microstructure (eutectic and primary carbides matrix). We have made quantitative and qualitative modifications in order to optimise the chemical composition, with the main objective of reducing costly elements (Cr, Mo) and of improving plasticity characteristics by the introduction of Cu, without inducing graphitization. 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White alloyed cast irons are particularly suitable to applications which require a good resistance to abrasion. The predominance of carbides in their microstructure endows them with a high hardness which is necessary to crush other materials without being damaged. The matrix can be adjusted by controlling the concentration of addition elements and by applying (whenever necessary) a heat treatment. The chemical composition regulates the quantity of eutectic and primary carbides and determines their morphology. In this study we consider the possibilities of acting on the microstructure (eutectic and primary carbides matrix). We have made quantitative and qualitative modifications in order to optimise the chemical composition, with the main objective of reducing costly elements (Cr, Mo) and of improving plasticity characteristics by the introduction of Cu, without inducing graphitization. The reduction of these costly element (Cr, Mo) and that of C, with the increase of Mn, sensibly modifies the structural morphology; it also improves the mechanical characteristics of the cast iron and thus enables the choice of the chemical composition of chock-resistant cast-iron.</p></abstract><abstract xml:lang="fr"><p>Rsum: Les fontes blanches allies conviennent particulirement aux applications qui exigent une bonne rsistance l'abrasion. La prdominance des carbures dans leurs microstructures leur donne la duret leve qui est ncessaire pour concasser ou broyer les autres matriaux sans qu'elles soient dgrades elles-mmes. La matrice qui sert de support aux carbures peut tre ajuste en rglant la teneur des lments d'alliages et en appliquant ou non un traitement thermique. La composition chimique rgle la quantit des carbures eutectiques et primaires et dtermine leur morphologie. Dans cette tude nous examinons les possibilits d'amliorer la tnacit de ces alliages en agissant sur la microstructure (carbures eutectiques et primaires et la matrice). Nous avons effectu des modifications tant quantitatives que qualitatives dans le but d'optimiser la composition chimique avec pour objectif principal la rduction des lments co teux (Cr, Mo) et d'amliorer les caractristiques de plasticit par l'introduction du cuivre sans entra ner la graphitisation. La rduction des lment coteux (Cr, Mo) et celle du carbone, avec la prsence du manganse, modifie sensiblement la morphologie de la structure, amliore les caractristiques mcaniques des fontes et permet de choisir la composition chimique des fontes fortement sollicites aux chocs.</p></abstract></profileDesc><revisionDesc><change when="1999">Published</change></revisionDesc></teiHeader></istex:fulltextTEI><json:item><extension>txt</extension><original>false</original><mimetype>text/plain</mimetype><uri>https://api.istex.fr/document/DC03EDC238988A8E7046AA10D3D2C0D116243136/fulltext/txt</uri></json:item></fulltext><metadata><istex:metadataXml wicri:clean="Elsevier doc found" wicri:toSee="Elsevier, no converted or simple article"><istex:xmlDeclaration>version="1.0" encoding="UTF-8"</istex:xmlDeclaration><istex:docType PUBLIC="-//ES//DTD journal article DTD version 5.1.0//EN//XML" URI="art510.dtd" name="istex:docType"></istex:docType><istex:document><article docsubtype="fla"> <item-info> <jid>ANNCSM</jid> <aid>80033</aid> <ce:pii>S0151-9107(99)80033-6</ce:pii> <ce:doi>10.1016/S0151-9107(99)80033-6</ce:doi> <ce:copyright type="limited-transfer" year="1999">Elsevier SAS</ce:copyright> </item-info> <head> <ce:title>Amelioration Des Proprietes Des Fontes Alliees Travaillant a L'usure Et Aux Chocs</ce:title> <ce:author-group> <ce:author> <ce:given-name>A.</ce:given-name> <ce:surname>Hadji</ce:surname><ce:cross-ref refid="cor1"><ce:sup>*</ce:sup></ce:cross-ref> </ce:author> <ce:author> <ce:given-name>M.</ce:given-name> <ce:surname>Baccouche</ce:surname> </ce:author> <ce:author> <ce:given-name>A.</ce:given-name> <ce:surname>Lemmoui</ce:surname> </ce:author> <ce:affiliation> <ce:textfn>Institut de Métallurgie, Université d'Annaba, BP 12, Annaba, Algérie</ce:textfn> </ce:affiliation> <ce:correspondence id="cor1"> <ce:label>*</ce:label> <ce:text>Reprints: A. HADJI, Institut de Métallurgie, Université d'Annaba, BP 12, Annaba, Algérie</ce:text> </ce:correspondence> </ce:author-group> <ce:abstract> <ce:section-title>Summary</ce:section-title> <ce:abstract-sec> <ce:simple-para id="spara10"><ce:underline>Improvement of the properties of alloyed cast iron exposed to wear and to shocks</ce:underline>. White alloyed cast irons are particularly suitable to applications which require a good resistance to abrasion. The predominance of carbides in their microstructure endows them with a high hardness which is necessary to crush other materials without being damaged. The matrix can be adjusted by controlling the concentration of addition elements and by applying (whenever necessary) a heat treatment. The chemical composition regulates the quantity of eutectic and primary carbides and determines their morphology. In this study we consider the possibilities of acting on the microstructure (eutectic and primary carbides matrix).</ce:simple-para> <ce:simple-para id="spara20">We have made quantitative and qualitative modifications in order to optimise the chemical composition, with the main objective of reducing costly elements (Cr, Mo) and of improving plasticity characteristics by the introduction of Cu, without inducing graphitization.</ce:simple-para> <ce:simple-para id="spara30">The reduction of these costly element (Cr, Mo) and that of C, with the increase of Mn, sensibly modifies the structural morphology; it also improves the mechanical characteristics of the cast iron and thus enables the choice of the chemical composition of chock-resistant cast-iron.</ce:simple-para> </ce:abstract-sec> </ce:abstract> <ce:abstract xml:lang="fr"> <ce:section-title>Résumé</ce:section-title> <ce:abstract-sec> <ce:simple-para id="spara40">Les fontes blanches alliées conviennent particulièrement aux applications qui exigent une bonne résistance à l'abrasion. La prédominance des carbures dans leurs microstructures leur donne la dureté élevée qui est nécessaire pour concasser ou broyer les autres matériaux sans qu'elles soient dégradées elles-mêmes. La matrice qui sert de support aux carbures peut être ajustée en réglant la teneur des éléments d'alliages et en appliquant ou non un traitement thermique. La composition chimique règle la quantité des carbures eutectiques et primaires et détermine leur morphologie. Dans cette étude nous examinons les possibilités d'améliorer la ténacité de ces alliages en agissant sur la microstructure (carbures eutectiques et primaires et la matrice). Nous avons effectué des modifications tant quantitatives que qualitatives dans le but d'optimiser la composition chimique avec pour objectif principal la réduction des éléments co ûteux (Cr, Mo) et d'améliorer les caractéristiques de plasticité par l'introduction du cuivre sans entra îner la graphitisation. La réduction des élément coûteux (Cr, Mo) et celle du carbone, avec la présence du manganèse, modifie sensiblement la morphologie de la structure, améliore les caractéristiques mécaniques des fontes et permet de choisir la composition chimique des fontes fortement sollicitées aux chocs.</ce:simple-para> </ce:abstract-sec> </ce:abstract> </head></article></istex:document></istex:metadataXml><mods version="3.6"><titleInfo><title>Amelioration Des Proprietes Des Fontes Alliees Travaillant a L'usure Et Aux Chocs</title></titleInfo><titleInfo type="alternative" contentType="CDATA"><title>Amelioration Des Proprietes Des Fontes Alliees Travaillant a L'usure Et Aux Chocs</title></titleInfo><name type="personal"><namePart type="given">A.</namePart><namePart type="family">Hadji</namePart><affiliation>Institut de Mtallurgie, Universit d'Annaba, BP 12, Annaba, Algrie</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">M.</namePart><namePart type="family">Baccouche</namePart><affiliation>Institut de Mtallurgie, Universit d'Annaba, BP 12, Annaba, Algrie</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">A.</namePart><namePart type="family">Lemmoui</namePart><affiliation>Institut de Mtallurgie, Universit d'Annaba, BP 12, Annaba, Algrie</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="research-article" displayLabel="Full-length article"></genre><originInfo><publisher>ELSEVIER</publisher><dateIssued encoding="w3cdtf">1999</dateIssued><copyrightDate encoding="w3cdtf">1999</copyrightDate></originInfo><language><languageTerm type="code" authority="iso639-2b">eng</languageTerm><languageTerm type="code" authority="rfc3066">en</languageTerm></language><physicalDescription><internetMediaType>text/html</internetMediaType></physicalDescription><abstract>Improvement of the properties of alloyed cast iron exposed to wear and to shocks. White alloyed cast irons are particularly suitable to applications which require a good resistance to abrasion. The predominance of carbides in their microstructure endows them with a high hardness which is necessary to crush other materials without being damaged. The matrix can be adjusted by controlling the concentration of addition elements and by applying (whenever necessary) a heat treatment. The chemical composition regulates the quantity of eutectic and primary carbides and determines their morphology. In this study we consider the possibilities of acting on the microstructure (eutectic and primary carbides matrix). We have made quantitative and qualitative modifications in order to optimise the chemical composition, with the main objective of reducing costly elements (Cr, Mo) and of improving plasticity characteristics by the introduction of Cu, without inducing graphitization. The reduction of these costly element (Cr, Mo) and that of C, with the increase of Mn, sensibly modifies the structural morphology; it also improves the mechanical characteristics of the cast iron and thus enables the choice of the chemical composition of chock-resistant cast-iron.</abstract><abstract lang="fr">Rsum: Les fontes blanches allies conviennent particulirement aux applications qui exigent une bonne rsistance l'abrasion. La prdominance des carbures dans leurs microstructures leur donne la duret leve qui est ncessaire pour concasser ou broyer les autres matriaux sans qu'elles soient dgrades elles-mmes. La matrice qui sert de support aux carbures peut tre ajuste en rglant la teneur des lments d'alliages et en appliquant ou non un traitement thermique. La composition chimique rgle la quantit des carbures eutectiques et primaires et dtermine leur morphologie. Dans cette tude nous examinons les possibilits d'amliorer la tnacit de ces alliages en agissant sur la microstructure (carbures eutectiques et primaires et la matrice). Nous avons effectu des modifications tant quantitatives que qualitatives dans le but d'optimiser la composition chimique avec pour objectif principal la rduction des lments co teux (Cr, Mo) et d'amliorer les caractristiques de plasticit par l'introduction du cuivre sans entra ner la graphitisation. La rduction des lment coteux (Cr, Mo) et celle du carbone, avec la prsence du manganse, modifie sensiblement la morphologie de la structure, amliore les caractristiques mcaniques des fontes et permet de choisir la composition chimique des fontes fortement sollicites aux chocs.</abstract><relatedItem type="host"><titleInfo><title>Annales de chimie - Sciences des materiaux</title></titleInfo><titleInfo type="abbreviated"><title>ANNCSM</title></titleInfo><genre type="journal">journal</genre><originInfo><dateIssued encoding="w3cdtf">1999</dateIssued></originInfo><identifier type="ISSN">0151-9107</identifier><identifier type="PII">S0151-9107(99)X0006-7</identifier><part><date>1999</date><detail type="volume"><number>24</number><caption>vol.</caption></detail><detail type="issue"><number>1</number><caption>no.</caption></detail><extent unit="issue pages"><start>1</start><end>94</end></extent><extent unit="pages"><start>39</start><end>46</end></extent></part></relatedItem><identifier type="istex">DC03EDC238988A8E7046AA10D3D2C0D116243136</identifier><identifier type="DOI">10.1016/S0151-9107(99)80033-6</identifier><identifier type="PII">S0151-9107(99)80033-6</identifier><accessCondition type="use and reproduction" contentType="copyright">©1999 Elsevier SAS</accessCondition><recordInfo><recordContentSource>ELSEVIER</recordContentSource><recordOrigin>Elsevier SAS, ©1999</recordOrigin></recordInfo></mods></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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