Microstructure and wear resistance of high chromium cast iron containing niobium
In the paper, the effect of niobium addition on the microstructure, mechanical properties and wear resistance of high chromium cast iron has been studied. The results show that the microstructure of the heat-treated alloys is composed of M7C3 and M23C6 types primary carbide, eutectic carbide, second...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Foundry Journal Agency
2014-05-01
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| Series: | China Foundry |
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| Online Access: | http://www.foundryworld.com/uploadfile/2014061659206001.pdf |
| _version_ | 1811314444626558976 |
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| author | Zhang Zhiguo Yang Chengkai Zhang Peng |
| author_facet | Zhang Zhiguo Yang Chengkai Zhang Peng |
| author_sort | Zhang Zhiguo |
| collection | DOAJ |
| description | In the paper, the effect of niobium addition on the microstructure, mechanical properties and wear resistance of high chromium cast iron has been studied. The results show that the microstructure of the heat-treated alloys is composed of M7C3 and M23C6 types primary carbide, eutectic carbide, secondary carbide and a matrix of martensite and retained austenite. NbC particles appear both inside and on the edge of the primary carbides. The hardness of the studied alloys maintains around 66 HRC, not significantly affected by the Nb content within the selected range of 0.48%-0.74%. The impact toughness of the alloys increases with increasing niobium content. The wear resistance of the specimens presents little variation in spite of the increase of Nb content under a light load of 40 N. However, when heavier loads of 70 and 100 N are applied, the wear resistance increases with increasing Nb content. |
| first_indexed | 2024-04-13T11:12:53Z |
| format | Article |
| id | doaj.art-0faebd161f71435bb76ec540a0915e11 |
| institution | Directory Open Access Journal |
| issn | 1672-6421 |
| language | English |
| last_indexed | 2024-04-13T11:12:53Z |
| publishDate | 2014-05-01 |
| publisher | Foundry Journal Agency |
| record_format | Article |
| series | China Foundry |
| spelling | doaj.art-0faebd161f71435bb76ec540a0915e112022-12-22T02:49:04ZengFoundry Journal AgencyChina Foundry1672-64212014-05-01113179184Microstructure and wear resistance of high chromium cast iron containing niobiumZhang Zhiguo0Yang Chengkai1Zhang Peng2Department of Materials Science and Engineering, Jinan University, Guangzhou 510632, ChinaDepartment of Materials Science and Engineering, Jinan University, Guangzhou 510632, ChinaDepartment of Materials Science and Engineering, Jinan University, Guangzhou 510632, ChinaIn the paper, the effect of niobium addition on the microstructure, mechanical properties and wear resistance of high chromium cast iron has been studied. The results show that the microstructure of the heat-treated alloys is composed of M7C3 and M23C6 types primary carbide, eutectic carbide, secondary carbide and a matrix of martensite and retained austenite. NbC particles appear both inside and on the edge of the primary carbides. The hardness of the studied alloys maintains around 66 HRC, not significantly affected by the Nb content within the selected range of 0.48%-0.74%. The impact toughness of the alloys increases with increasing niobium content. The wear resistance of the specimens presents little variation in spite of the increase of Nb content under a light load of 40 N. However, when heavier loads of 70 and 100 N are applied, the wear resistance increases with increasing Nb content.http://www.foundryworld.com/uploadfile/2014061659206001.pdfhigh chromium cast irons; NbChardness; impact toughness; wear resistance |
| spellingShingle | Zhang Zhiguo Yang Chengkai Zhang Peng Microstructure and wear resistance of high chromium cast iron containing niobium China Foundry high chromium cast irons; NbC hardness; impact toughness; wear resistance |
| title | Microstructure and wear resistance of high chromium cast iron containing niobium |
| title_full | Microstructure and wear resistance of high chromium cast iron containing niobium |
| title_fullStr | Microstructure and wear resistance of high chromium cast iron containing niobium |
| title_full_unstemmed | Microstructure and wear resistance of high chromium cast iron containing niobium |
| title_short | Microstructure and wear resistance of high chromium cast iron containing niobium |
| title_sort | microstructure and wear resistance of high chromium cast iron containing niobium |
| topic | high chromium cast irons; NbC hardness; impact toughness; wear resistance |
| url | http://www.foundryworld.com/uploadfile/2014061659206001.pdf |
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