Influence of sintering temperature on microstructure, magnetic properties of vacuum sintered Co (-Zn)-Ni-Al alloys
[Display omitted] •Co(-Zn)-Ni-Al alloys exhibit polycrystalline mixed-phase face centered cubic structure.•The alloys show nano-sized twinned needle-like Co precipitates (A2 phase) in B2 matrix.•The alloys exhibit single domain state, estimated using the Stoner-Wohlfarth model. Co38Ni35Al27 and Co35...
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| Veröffentlicht in: | Materials letters 2018-12, Vol.233, p.177-180 |
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| creator | Arputhavalli, G. Johnsy Agilan, S. Saravanan, P. |
| description | [Display omitted]
•Co(-Zn)-Ni-Al alloys exhibit polycrystalline mixed-phase face centered cubic structure.•The alloys show nano-sized twinned needle-like Co precipitates (A2 phase) in B2 matrix.•The alloys exhibit single domain state, estimated using the Stoner-Wohlfarth model.
Co38Ni35Al27 and Co35Zn10Ni32Al23 ferromagnetic shape memory alloys were prepared via facile powder metallurgy and vacuum sintering technique. The influence of sintering temperature on phase transformation behaviour, microstructure and magnetic properties were investigated. The rise in peak intensity of A2-phase shows that the alloy is rich in martensitic-phase in the polycrystalline cubic B2-phase structure and Zn incorporation leads to the reduction in austenite-phase. The needle-shaped cobalt precipitates on predominant martensite A2-phase, shows Widmanstatten-like structure in the samples sintered at 673 K. The saturation magnetization was found to be 87.92 and 96.2 emu/g for Co38Ni35Al27 and Co35Zn10Ni32Al23 alloy. The existence of non-interacting single-domain particles were observed and proved using Stoner-Wohlfarth model. |
| doi_str_mv | 10.1016/j.matlet.2018.08.152 |
| format | Article |
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•Co(-Zn)-Ni-Al alloys exhibit polycrystalline mixed-phase face centered cubic structure.•The alloys show nano-sized twinned needle-like Co precipitates (A2 phase) in B2 matrix.•The alloys exhibit single domain state, estimated using the Stoner-Wohlfarth model.
Co38Ni35Al27 and Co35Zn10Ni32Al23 ferromagnetic shape memory alloys were prepared via facile powder metallurgy and vacuum sintering technique. The influence of sintering temperature on phase transformation behaviour, microstructure and magnetic properties were investigated. The rise in peak intensity of A2-phase shows that the alloy is rich in martensitic-phase in the polycrystalline cubic B2-phase structure and Zn incorporation leads to the reduction in austenite-phase. The needle-shaped cobalt precipitates on predominant martensite A2-phase, shows Widmanstatten-like structure in the samples sintered at 673 K. The saturation magnetization was found to be 87.92 and 96.2 emu/g for Co38Ni35Al27 and Co35Zn10Ni32Al23 alloy. The existence of non-interacting single-domain particles were observed and proved using Stoner-Wohlfarth model.</description><identifier>ISSN: 0167-577X</identifier><identifier>EISSN: 1873-4979</identifier><identifier>DOI: 10.1016/j.matlet.2018.08.152</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Alloys ; Co-Ni-Al alloys ; Ferromagnetism ; Magnetic properties ; Magnetic saturation ; Magnetism ; Martensite ; Martensitic transformations ; Materials science ; Mechanical properties ; Microstructure ; Nickel base alloys ; Phase transitions ; Powder metallurgy ; Precipitates ; Shape memory alloys ; Solid phases ; Vacuum sintering ; Widmanstatten structure ; Zinc</subject><ispartof>Materials letters, 2018-12, Vol.233, p.177-180</ispartof><rights>2018 Elsevier B.V.</rights><rights>Copyright Elsevier BV Dec 15, 2018</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c371t-6dec20aaf47348d56cbcd307afbe445e093d85139e93789f2b28f13370aec5813</citedby><cites>FETCH-LOGICAL-c371t-6dec20aaf47348d56cbcd307afbe445e093d85139e93789f2b28f13370aec5813</cites><orcidid>0000-0001-6743-3386</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0167577X18313636$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65534</link.rule.ids></links><search><creatorcontrib>Arputhavalli, G. Johnsy</creatorcontrib><creatorcontrib>Agilan, S.</creatorcontrib><creatorcontrib>Saravanan, P.</creatorcontrib><title>Influence of sintering temperature on microstructure, magnetic properties of vacuum sintered Co (-Zn)-Ni-Al alloys</title><title>Materials letters</title><description>[Display omitted]
•Co(-Zn)-Ni-Al alloys exhibit polycrystalline mixed-phase face centered cubic structure.•The alloys show nano-sized twinned needle-like Co precipitates (A2 phase) in B2 matrix.•The alloys exhibit single domain state, estimated using the Stoner-Wohlfarth model.
Co38Ni35Al27 and Co35Zn10Ni32Al23 ferromagnetic shape memory alloys were prepared via facile powder metallurgy and vacuum sintering technique. The influence of sintering temperature on phase transformation behaviour, microstructure and magnetic properties were investigated. The rise in peak intensity of A2-phase shows that the alloy is rich in martensitic-phase in the polycrystalline cubic B2-phase structure and Zn incorporation leads to the reduction in austenite-phase. The needle-shaped cobalt precipitates on predominant martensite A2-phase, shows Widmanstatten-like structure in the samples sintered at 673 K. The saturation magnetization was found to be 87.92 and 96.2 emu/g for Co38Ni35Al27 and Co35Zn10Ni32Al23 alloy. The existence of non-interacting single-domain particles were observed and proved using Stoner-Wohlfarth model.</description><subject>Alloys</subject><subject>Co-Ni-Al alloys</subject><subject>Ferromagnetism</subject><subject>Magnetic properties</subject><subject>Magnetic saturation</subject><subject>Magnetism</subject><subject>Martensite</subject><subject>Martensitic transformations</subject><subject>Materials science</subject><subject>Mechanical properties</subject><subject>Microstructure</subject><subject>Nickel base alloys</subject><subject>Phase transitions</subject><subject>Powder metallurgy</subject><subject>Precipitates</subject><subject>Shape memory alloys</subject><subject>Solid phases</subject><subject>Vacuum sintering</subject><subject>Widmanstatten structure</subject><subject>Zinc</subject><issn>0167-577X</issn><issn>1873-4979</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNp9kE1LAzEQhoMoWKv_wEPAi4K75mub7EWQ4keh6EVBvIQ0O1tS9qMm2UL_vVnas6eBmfd9Z-ZB6JqSnBI6e9jkrYkNxJwRqnKiclqwEzShSvJMlLI8RZMkk1kh5fc5ughhQwgRJRET5Bdd3QzQWcB9jYPrInjXrXGEdgvexMGnQYdbZ30foh_s2LnHrVl3EJ3FW98nXXQQRv_O2GFojzFQ4XmPb7Of7i57d9lTg03T9Ptwic5q0wS4OtYp-np5_py_ZcuP18X8aZlZLmnMZhVYRoypheRCVcXMrmzFiTT1CoQogJS8UgXlJZRcqrJmK6ZqyrkkBmyhKJ-im0NuuvF3gBD1ph98l1ZqRpkUrGAzkVTioBofDB5qvfWuNX6vKdEjXb3RB7p6pKuJ0olusj0ebJA-2DnwOlg3YqycBxt11bv_A_4AR26Gdw</recordid><startdate>20181215</startdate><enddate>20181215</enddate><creator>Arputhavalli, G. Johnsy</creator><creator>Agilan, S.</creator><creator>Saravanan, P.</creator><general>Elsevier B.V</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><orcidid>https://orcid.org/0000-0001-6743-3386</orcidid></search><sort><creationdate>20181215</creationdate><title>Influence of sintering temperature on microstructure, magnetic properties of vacuum sintered Co (-Zn)-Ni-Al alloys</title><author>Arputhavalli, G. Johnsy ; Agilan, S. ; Saravanan, P.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c371t-6dec20aaf47348d56cbcd307afbe445e093d85139e93789f2b28f13370aec5813</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Alloys</topic><topic>Co-Ni-Al alloys</topic><topic>Ferromagnetism</topic><topic>Magnetic properties</topic><topic>Magnetic saturation</topic><topic>Magnetism</topic><topic>Martensite</topic><topic>Martensitic transformations</topic><topic>Materials science</topic><topic>Mechanical properties</topic><topic>Microstructure</topic><topic>Nickel base alloys</topic><topic>Phase transitions</topic><topic>Powder metallurgy</topic><topic>Precipitates</topic><topic>Shape memory alloys</topic><topic>Solid phases</topic><topic>Vacuum sintering</topic><topic>Widmanstatten structure</topic><topic>Zinc</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Arputhavalli, G. Johnsy</creatorcontrib><creatorcontrib>Agilan, S.</creatorcontrib><creatorcontrib>Saravanan, P.</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Materials letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Arputhavalli, G. Johnsy</au><au>Agilan, S.</au><au>Saravanan, P.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Influence of sintering temperature on microstructure, magnetic properties of vacuum sintered Co (-Zn)-Ni-Al alloys</atitle><jtitle>Materials letters</jtitle><date>2018-12-15</date><risdate>2018</risdate><volume>233</volume><spage>177</spage><epage>180</epage><pages>177-180</pages><issn>0167-577X</issn><eissn>1873-4979</eissn><abstract>[Display omitted]
•Co(-Zn)-Ni-Al alloys exhibit polycrystalline mixed-phase face centered cubic structure.•The alloys show nano-sized twinned needle-like Co precipitates (A2 phase) in B2 matrix.•The alloys exhibit single domain state, estimated using the Stoner-Wohlfarth model.
Co38Ni35Al27 and Co35Zn10Ni32Al23 ferromagnetic shape memory alloys were prepared via facile powder metallurgy and vacuum sintering technique. The influence of sintering temperature on phase transformation behaviour, microstructure and magnetic properties were investigated. The rise in peak intensity of A2-phase shows that the alloy is rich in martensitic-phase in the polycrystalline cubic B2-phase structure and Zn incorporation leads to the reduction in austenite-phase. The needle-shaped cobalt precipitates on predominant martensite A2-phase, shows Widmanstatten-like structure in the samples sintered at 673 K. The saturation magnetization was found to be 87.92 and 96.2 emu/g for Co38Ni35Al27 and Co35Zn10Ni32Al23 alloy. The existence of non-interacting single-domain particles were observed and proved using Stoner-Wohlfarth model.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><doi>10.1016/j.matlet.2018.08.152</doi><tpages>4</tpages><orcidid>https://orcid.org/0000-0001-6743-3386</orcidid></addata></record> |
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| subjects | Alloys Co-Ni-Al alloys Ferromagnetism Magnetic properties Magnetic saturation Magnetism Martensite Martensitic transformations Materials science Mechanical properties Microstructure Nickel base alloys Phase transitions Powder metallurgy Precipitates Shape memory alloys Solid phases Vacuum sintering Widmanstatten structure Zinc |
| title | Influence of sintering temperature on microstructure, magnetic properties of vacuum sintered Co (-Zn)-Ni-Al alloys |
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