Martensitic Transformation and Magnetic Properties of Ni57Fe18Ga25 Shape Memory Alloy Subjected to Severe Plastic Deformation
The effects of severe plastic deformation (SPD) process via high-speed high-pressure torsion technique on martensitic transformation of Ni–Fe–Ga Heusler shape memory alloy are the subject of this work. The results show that moderate degrees of deformation lead to a decrease in the martensitic transf...
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| Veröffentlicht in: | Transactions of the Indian Institute of Metals 2021-10, Vol.74 (10), p.2491-2498 |
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| container_title | Transactions of the Indian Institute of Metals |
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| creator | Popescu, B. Gurau, C. Gurau, G. Tolea, M. Sofronie, M. Tolea, F. |
| description | The effects of severe plastic deformation (SPD) process via high-speed high-pressure torsion technique on martensitic transformation of Ni–Fe–Ga Heusler shape memory alloy are the subject of this work. The results show that moderate degrees of deformation lead to a decrease in the martensitic transformation temperatures, while the heat of reaction is enhanced only for the sample processed with the lowest degree of deformation. The results are explained by the interplay between the constituent tetragonal L10 and the cubic gamma crystal structures and the evolution of the samples morphology with the severity of deformation. The reduction in the samples granulation due to the progressive increase in the SPD is reflected by the magnetic properties of the samples with decreasing coercivity and Curie temperatures. At the highest applied degree of deformation, sample nanostructuring and a possible amorphization might explain the vanishing of MT. |
| doi_str_mv | 10.1007/s12666-021-02293-8 |
| format | Article |
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The results show that moderate degrees of deformation lead to a decrease in the martensitic transformation temperatures, while the heat of reaction is enhanced only for the sample processed with the lowest degree of deformation. The results are explained by the interplay between the constituent tetragonal L10 and the cubic gamma crystal structures and the evolution of the samples morphology with the severity of deformation. The reduction in the samples granulation due to the progressive increase in the SPD is reflected by the magnetic properties of the samples with decreasing coercivity and Curie temperatures. 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At the highest applied degree of deformation, sample nanostructuring and a possible amorphization might explain the vanishing of MT.</description><subject>Amorphization</subject><subject>Chemistry and Materials Science</subject><subject>Coercivity</subject><subject>Corrosion and Coatings</subject><subject>Crystal structure</subject><subject>Deformation effects</subject><subject>Granulation</subject><subject>Heat of reaction</subject><subject>Heusler alloys</subject><subject>Magnetic properties</subject><subject>Martensitic transformations</subject><subject>Materials Science</subject><subject>Metallic Materials</subject><subject>Morphology</subject><subject>Nickel</subject><subject>Original Article</subject><subject>Plastic deformation</subject><subject>Shape memory alloys</subject><subject>Transformation temperature</subject><subject>Tribology</subject><issn>0972-2815</issn><issn>0975-1645</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNp9kE9Lw0AQxYMoWKtfwNOC5-j-ySa7x1K1Cq0WWs_LZndSU9Js3E2FHvzuJo3ozcMwA_PeG-YXRdcE3xKMs7tAaJqmMaakKypZLE6iEZYZj0ma8NPjTGMqCD-PLkLYYswkZWwUfS20b6EOZVsatPa6DoXzO92Wrka6tmihNzX0u6V3Dfi2hIBcgV5Knj0CETNNOVq96wbQAnbOH9CkqtwBrfb5FkwLFrUOreATPKBlpUOfdA-_Jy6js0JXAa5--jh6e3xYT5_i-evseTqZx4YR2cZMWJ1knNqcQZFnFgpGLKOFkEZarHPbfZNnGViCpTZGAgEmdGoSaSzPk5SNo5sht_HuYw-hVVu393V3UlEuJJGMiF5FB5XxLgQPhWp8udP-oAhWPWY1YFYdZnXErERnYoMpdOJ6A_4v-h_XN8zugbY</recordid><startdate>20211001</startdate><enddate>20211001</enddate><creator>Popescu, B.</creator><creator>Gurau, C.</creator><creator>Gurau, G.</creator><creator>Tolea, M.</creator><creator>Sofronie, M.</creator><creator>Tolea, F.</creator><general>Springer India</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>20211001</creationdate><title>Martensitic Transformation and Magnetic Properties of Ni57Fe18Ga25 Shape Memory Alloy Subjected to Severe Plastic Deformation</title><author>Popescu, B. ; Gurau, C. ; Gurau, G. ; Tolea, M. ; Sofronie, M. ; Tolea, F.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c319t-38da4752db3efb7def31d32f89c9d0abd039b77ed109acc9e1e38a6c49cd5b463</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Amorphization</topic><topic>Chemistry and Materials Science</topic><topic>Coercivity</topic><topic>Corrosion and Coatings</topic><topic>Crystal structure</topic><topic>Deformation effects</topic><topic>Granulation</topic><topic>Heat of reaction</topic><topic>Heusler alloys</topic><topic>Magnetic properties</topic><topic>Martensitic transformations</topic><topic>Materials Science</topic><topic>Metallic Materials</topic><topic>Morphology</topic><topic>Nickel</topic><topic>Original Article</topic><topic>Plastic deformation</topic><topic>Shape memory alloys</topic><topic>Transformation temperature</topic><topic>Tribology</topic><toplevel>online_resources</toplevel><creatorcontrib>Popescu, B.</creatorcontrib><creatorcontrib>Gurau, C.</creatorcontrib><creatorcontrib>Gurau, G.</creatorcontrib><creatorcontrib>Tolea, M.</creatorcontrib><creatorcontrib>Sofronie, M.</creatorcontrib><creatorcontrib>Tolea, F.</creatorcontrib><collection>CrossRef</collection><jtitle>Transactions of the Indian Institute of Metals</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Popescu, B.</au><au>Gurau, C.</au><au>Gurau, G.</au><au>Tolea, M.</au><au>Sofronie, M.</au><au>Tolea, F.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Martensitic Transformation and Magnetic Properties of Ni57Fe18Ga25 Shape Memory Alloy Subjected to Severe Plastic Deformation</atitle><jtitle>Transactions of the Indian Institute of Metals</jtitle><stitle>Trans Indian Inst Met</stitle><date>2021-10-01</date><risdate>2021</risdate><volume>74</volume><issue>10</issue><spage>2491</spage><epage>2498</epage><pages>2491-2498</pages><issn>0972-2815</issn><eissn>0975-1645</eissn><abstract>The effects of severe plastic deformation (SPD) process via high-speed high-pressure torsion technique on martensitic transformation of Ni–Fe–Ga Heusler shape memory alloy are the subject of this work. The results show that moderate degrees of deformation lead to a decrease in the martensitic transformation temperatures, while the heat of reaction is enhanced only for the sample processed with the lowest degree of deformation. The results are explained by the interplay between the constituent tetragonal L10 and the cubic gamma crystal structures and the evolution of the samples morphology with the severity of deformation. The reduction in the samples granulation due to the progressive increase in the SPD is reflected by the magnetic properties of the samples with decreasing coercivity and Curie temperatures. At the highest applied degree of deformation, sample nanostructuring and a possible amorphization might explain the vanishing of MT.</abstract><cop>New Delhi</cop><pub>Springer India</pub><doi>10.1007/s12666-021-02293-8</doi><tpages>8</tpages></addata></record> |
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| subjects | Amorphization Chemistry and Materials Science Coercivity Corrosion and Coatings Crystal structure Deformation effects Granulation Heat of reaction Heusler alloys Magnetic properties Martensitic transformations Materials Science Metallic Materials Morphology Nickel Original Article Plastic deformation Shape memory alloys Transformation temperature Tribology |
| title | Martensitic Transformation and Magnetic Properties of Ni57Fe18Ga25 Shape Memory Alloy Subjected to Severe Plastic Deformation |
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