Effect of heat treatment on structure and magnetic properties of Fe65.5Cr4Mo4Ga4P12C5B5.5 bulk amorphous alloy
This study deals with the Fe65.5Cr4Mo4Ga4P12C5B5.5 ferromagnetic bulk amorphous alloy. XRD analysis showed an amorphous structure of the as-cast sample. The same method revealed that, after annealing at 973 K for τ=10 min, the sample displayed a crystalline structure with crystalline phases formed....
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| Format: | Article |
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Foundry Journal Agency
2017-01-01
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| Series: | China Foundry |
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| Online Access: | http://ff.foundryworld.com/uploadfile/2017020931699451.pdf |
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| author | Bratislav Cukic Nebojsa Mitrovic Aleksa Maricic |
| author_facet | Bratislav Cukic Nebojsa Mitrovic Aleksa Maricic |
| author_sort | Bratislav Cukic |
| collection | DOAJ |
| description | This study deals with the Fe65.5Cr4Mo4Ga4P12C5B5.5 ferromagnetic bulk amorphous alloy. XRD analysis showed an amorphous structure of the as-cast sample. The same method revealed that, after annealing at 973 K for τ=10 min, the sample displayed a crystalline structure with crystalline phases formed. The crystallization process of the alloy was examined by DTA analysis. It was shown that crystallization took place in the temperature range between 810 K and 860 K with the exo-maximum peak temperature at 846 K with a heating rate of 20 Kmin-1. The method also showed that, at temperatures ranging from 753 K to 810 K, the alloy exhibited the properties of supercooled liquids. A correlation between heat-induced structural changes and magnetic properties of the alloy was determined by thermomagnetic measurements. Maximum magnetization M=3.7 Am2kg-1 of the alloy was reached after its annealing at 733 K for τ=10 min. Upon annealing, the alloy exhibited a relaxed amorphous structure. Annealing the alloy above the crystallization temperature led to a decrease in bulk magnetization. After annealing at 973 K for τ=10 min, the bulk magnetization of the alloy was M'=0.45 Am2kg-1. Accordingly, after crystallization and formation of new compounds, the magnetization of the alloy was decreased by a factor of about 7.7. The strength of the magnetic field applied during the measurements was H=10 kAm-1. The samples were tested for changes in the microstructure and hardness of both the amorphous phase and the resulting crystalline phase. |
| first_indexed | 2024-12-11T09:47:38Z |
| format | Article |
| id | doaj.art-1b2c1e595d9a45f3b77a75a0f6892c94 |
| institution | Directory Open Access Journal |
| issn | 1672-6421 1672-6421 |
| language | English |
| last_indexed | 2024-12-11T09:47:38Z |
| publishDate | 2017-01-01 |
| publisher | Foundry Journal Agency |
| record_format | Article |
| series | China Foundry |
| spelling | doaj.art-1b2c1e595d9a45f3b77a75a0f6892c942022-12-22T01:12:30ZengFoundry Journal AgencyChina Foundry1672-64211672-64212017-01-01141596310.1007/s41230-017-6114-2Effect of heat treatment on structure and magnetic properties of Fe65.5Cr4Mo4Ga4P12C5B5.5 bulk amorphous alloyBratislav Cukic0Nebojsa Mitrovic1Aleksa Maricic2Technical College of Vocational Studies, 32 000 Cacak, SerbiaJoint Laboratory for Advanced Materials of SASA, Section for Amorphous Systems, Faculty of Technical Sciences Cacak, University of Kragujevac, 32 000 Cacak, SerbiaJoint Laboratory for Advanced Materials of SASA, Section for Amorphous Systems, Faculty of Technical Sciences Cacak, University of Kragujevac, 32 000 Cacak, SerbiaThis study deals with the Fe65.5Cr4Mo4Ga4P12C5B5.5 ferromagnetic bulk amorphous alloy. XRD analysis showed an amorphous structure of the as-cast sample. The same method revealed that, after annealing at 973 K for τ=10 min, the sample displayed a crystalline structure with crystalline phases formed. The crystallization process of the alloy was examined by DTA analysis. It was shown that crystallization took place in the temperature range between 810 K and 860 K with the exo-maximum peak temperature at 846 K with a heating rate of 20 Kmin-1. The method also showed that, at temperatures ranging from 753 K to 810 K, the alloy exhibited the properties of supercooled liquids. A correlation between heat-induced structural changes and magnetic properties of the alloy was determined by thermomagnetic measurements. Maximum magnetization M=3.7 Am2kg-1 of the alloy was reached after its annealing at 733 K for τ=10 min. Upon annealing, the alloy exhibited a relaxed amorphous structure. Annealing the alloy above the crystallization temperature led to a decrease in bulk magnetization. After annealing at 973 K for τ=10 min, the bulk magnetization of the alloy was M'=0.45 Am2kg-1. Accordingly, after crystallization and formation of new compounds, the magnetization of the alloy was decreased by a factor of about 7.7. The strength of the magnetic field applied during the measurements was H=10 kAm-1. The samples were tested for changes in the microstructure and hardness of both the amorphous phase and the resulting crystalline phase.http://ff.foundryworld.com/uploadfile/2017020931699451.pdfbulk metallic glass; X-ray diffraction analysis; differential thermal analysis; thermomagnetic properties; magnetization; hardness; microstructure |
| spellingShingle | Bratislav Cukic Nebojsa Mitrovic Aleksa Maricic Effect of heat treatment on structure and magnetic properties of Fe65.5Cr4Mo4Ga4P12C5B5.5 bulk amorphous alloy China Foundry bulk metallic glass; X-ray diffraction analysis; differential thermal analysis; thermomagnetic properties; magnetization; hardness; microstructure |
| title | Effect of heat treatment on structure and magnetic properties of Fe65.5Cr4Mo4Ga4P12C5B5.5 bulk amorphous alloy |
| title_full | Effect of heat treatment on structure and magnetic properties of Fe65.5Cr4Mo4Ga4P12C5B5.5 bulk amorphous alloy |
| title_fullStr | Effect of heat treatment on structure and magnetic properties of Fe65.5Cr4Mo4Ga4P12C5B5.5 bulk amorphous alloy |
| title_full_unstemmed | Effect of heat treatment on structure and magnetic properties of Fe65.5Cr4Mo4Ga4P12C5B5.5 bulk amorphous alloy |
| title_short | Effect of heat treatment on structure and magnetic properties of Fe65.5Cr4Mo4Ga4P12C5B5.5 bulk amorphous alloy |
| title_sort | effect of heat treatment on structure and magnetic properties of fe65 5cr4mo4ga4p12c5b5 5 bulk amorphous alloy |
| topic | bulk metallic glass; X-ray diffraction analysis; differential thermal analysis; thermomagnetic properties; magnetization; hardness; microstructure |
| url | http://ff.foundryworld.com/uploadfile/2017020931699451.pdf |
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