Interfacial Stability of TiC/γ-Fe in TiC/316L Stainless Steel Composites Prepared by Selective Laser Melting: First Principles and Experiment
TiC/316L stainless steel composites were prepared by selective laser melting. The adhesion work, interface energy and electronic structure of the TiC/γ-Fe interfaces in TiC/316L stainless steel composites were studied to investigate the heterogeneous nucleation potential of γ-Fe grains on TiC partic...
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MDPI AG
2020-09-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/10/9/1225 |
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| author | Peikang Bai Qin Wang Zhanyong Zhao Wenbo Du Minjie Liang Haihong Liao Yuxin Li Lizheng Zhang Bing Han Jing Li |
| author_facet | Peikang Bai Qin Wang Zhanyong Zhao Wenbo Du Minjie Liang Haihong Liao Yuxin Li Lizheng Zhang Bing Han Jing Li |
| author_sort | Peikang Bai |
| collection | DOAJ |
| description | TiC/316L stainless steel composites were prepared by selective laser melting. The adhesion work, interface energy and electronic structure of the TiC/γ-Fe interfaces in TiC/316L stainless steel composites were studied to investigate the heterogeneous nucleation potential of γ-Fe grains on TiC particles by using the first principle. The degree mismatch between TiC (001) and γ-Fe (001) interface was lowest. There are four TiC (001)/γ-Fe (001) interface models with different stacking sequences (on-site and bridge-site) and different atomic arrangement sequences (C centre and Ti centre). The results show that the Fe-on-Ti centre interface had the largest work of adhesion (3.87 J/m<sup>2</sup>) and lower interfacial energy (0.04 J/m<sup>2</sup>), it was more stable, and the interfacial energy of the model was lower than that of γ-Fe/Fe melt (0.24 J/m<sup>2</sup>). Strong Fe-C covalent bonds and Fe-Ti metallic bonds were formed near the interface, which increased the interfacial strength, indicating that TiC had strong heterogeneous nucleation potency for γ-Fe. |
| first_indexed | 2024-03-10T16:24:16Z |
| format | Article |
| id | doaj.art-34764ef2a78d4dea918173dfa91b2422 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-10T16:24:16Z |
| publishDate | 2020-09-01 |
| publisher | MDPI AG |
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| series | Metals |
| spelling | doaj.art-34764ef2a78d4dea918173dfa91b24222023-11-20T13:19:48ZengMDPI AGMetals2075-47012020-09-01109122510.3390/met10091225Interfacial Stability of TiC/γ-Fe in TiC/316L Stainless Steel Composites Prepared by Selective Laser Melting: First Principles and ExperimentPeikang Bai0Qin Wang1Zhanyong Zhao2Wenbo Du3Minjie Liang4Haihong Liao5Yuxin Li6Lizheng Zhang7Bing Han8Jing Li9School of Materials Science and Engineering, North University of China, Taiyuan 030051, ChinaSchool of Materials Science and Engineering, North University of China, Taiyuan 030051, ChinaSchool of Materials Science and Engineering, North University of China, Taiyuan 030051, ChinaNational Key Laboratory for Remanufacturing, Army Academy of Armored Forces, Beijing 100072, ChinaSchool of Materials Science and Engineering, North University of China, Taiyuan 030051, ChinaSchool of Materials Science and Engineering, North University of China, Taiyuan 030051, ChinaSchool of Materials Science and Engineering, North University of China, Taiyuan 030051, ChinaSchool of Materials Science and Engineering, North University of China, Taiyuan 030051, ChinaCollege of Mechatronics Engineering, North University of China, Taiyuan 030051, ChinaSchool of Materials Science and Engineering, North University of China, Taiyuan 030051, ChinaTiC/316L stainless steel composites were prepared by selective laser melting. The adhesion work, interface energy and electronic structure of the TiC/γ-Fe interfaces in TiC/316L stainless steel composites were studied to investigate the heterogeneous nucleation potential of γ-Fe grains on TiC particles by using the first principle. The degree mismatch between TiC (001) and γ-Fe (001) interface was lowest. There are four TiC (001)/γ-Fe (001) interface models with different stacking sequences (on-site and bridge-site) and different atomic arrangement sequences (C centre and Ti centre). The results show that the Fe-on-Ti centre interface had the largest work of adhesion (3.87 J/m<sup>2</sup>) and lower interfacial energy (0.04 J/m<sup>2</sup>), it was more stable, and the interfacial energy of the model was lower than that of γ-Fe/Fe melt (0.24 J/m<sup>2</sup>). Strong Fe-C covalent bonds and Fe-Ti metallic bonds were formed near the interface, which increased the interfacial strength, indicating that TiC had strong heterogeneous nucleation potency for γ-Fe.https://www.mdpi.com/2075-4701/10/9/1225laser processingmetals and alloysfirst principleinterfacial stabilityheterogeneous nucleation |
| spellingShingle | Peikang Bai Qin Wang Zhanyong Zhao Wenbo Du Minjie Liang Haihong Liao Yuxin Li Lizheng Zhang Bing Han Jing Li Interfacial Stability of TiC/γ-Fe in TiC/316L Stainless Steel Composites Prepared by Selective Laser Melting: First Principles and Experiment Metals laser processing metals and alloys first principle interfacial stability heterogeneous nucleation |
| title | Interfacial Stability of TiC/γ-Fe in TiC/316L Stainless Steel Composites Prepared by Selective Laser Melting: First Principles and Experiment |
| title_full | Interfacial Stability of TiC/γ-Fe in TiC/316L Stainless Steel Composites Prepared by Selective Laser Melting: First Principles and Experiment |
| title_fullStr | Interfacial Stability of TiC/γ-Fe in TiC/316L Stainless Steel Composites Prepared by Selective Laser Melting: First Principles and Experiment |
| title_full_unstemmed | Interfacial Stability of TiC/γ-Fe in TiC/316L Stainless Steel Composites Prepared by Selective Laser Melting: First Principles and Experiment |
| title_short | Interfacial Stability of TiC/γ-Fe in TiC/316L Stainless Steel Composites Prepared by Selective Laser Melting: First Principles and Experiment |
| title_sort | interfacial stability of tic γ fe in tic 316l stainless steel composites prepared by selective laser melting first principles and experiment |
| topic | laser processing metals and alloys first principle interfacial stability heterogeneous nucleation |
| url | https://www.mdpi.com/2075-4701/10/9/1225 |
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