Sliding Wear Behavior of Intermetallic Ti-45Al-2Nb-2Mn-(at%)-0.8vol%TiB<sub>2</sub> Processed by Centrifugal Casting and Hot Isostatic Pressure: Influence of Microstructure
Intermetallic alloys such as titanium aluminides (TiAl) are potential materials for aerospace applications at elevated temperatures. TiAl intermetallics have low weight and improved efficiency under aggressive environments. However, there is limited information about wear behavior of these alloys an...
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MDPI AG
2022-11-01
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| Online Access: | https://www.mdpi.com/1996-1944/15/22/8052 |
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| author | Segundo Shagñay Juan Cornide Elisa María Ruiz-Navas |
| author_facet | Segundo Shagñay Juan Cornide Elisa María Ruiz-Navas |
| author_sort | Segundo Shagñay |
| collection | DOAJ |
| description | Intermetallic alloys such as titanium aluminides (TiAl) are potential materials for aerospace applications at elevated temperatures. TiAl intermetallics have low weight and improved efficiency under aggressive environments. However, there is limited information about wear behavior of these alloys and their microstructure. The present work aims to study the influence of the microstructure in the tribological behavior of TiAl intermetallic alloy (45Al-2Mn-2Nb(at%)-0.8 vol%TiB<sub>2</sub>). Wear tests were performed on samples manufactured by centrifugal casting (CC) and hot isostatic pressure (HIP). Reciprocating sliding wear test was carried out for TiAl, it was combined with different loads and frequencies. Wear tracks were analyzed through opto-digital microscopy and electron microscopy (SEM). The results obtained reveal that CC intermetallics present the lowest volume wear lost, approximately 20% less than HIP intermetallics. This good behavior could be related to the high hardness material, associated with the main microstructure where CC intermetallic has nearly lamellar microstructure and HIP intermetallics present duplex microstructure. |
| first_indexed | 2024-03-09T18:12:21Z |
| format | Article |
| id | doaj.art-f35976dec64d416db6b9b2631253b645 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T18:12:21Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-f35976dec64d416db6b9b2631253b6452023-11-24T09:03:24ZengMDPI AGMaterials1996-19442022-11-011522805210.3390/ma15228052Sliding Wear Behavior of Intermetallic Ti-45Al-2Nb-2Mn-(at%)-0.8vol%TiB<sub>2</sub> Processed by Centrifugal Casting and Hot Isostatic Pressure: Influence of MicrostructureSegundo Shagñay0Juan Cornide1Elisa María Ruiz-Navas2Material Science and Engineering Department-IAAB, University Carlos III of Madrid, Ave. Universidad 30, 28911 Leganés, SpainMaterial Science and Engineering Department-IAAB, University Carlos III of Madrid, Ave. Universidad 30, 28911 Leganés, SpainMaterial Science and Engineering Department-IAAB, University Carlos III of Madrid, Ave. Universidad 30, 28911 Leganés, SpainIntermetallic alloys such as titanium aluminides (TiAl) are potential materials for aerospace applications at elevated temperatures. TiAl intermetallics have low weight and improved efficiency under aggressive environments. However, there is limited information about wear behavior of these alloys and their microstructure. The present work aims to study the influence of the microstructure in the tribological behavior of TiAl intermetallic alloy (45Al-2Mn-2Nb(at%)-0.8 vol%TiB<sub>2</sub>). Wear tests were performed on samples manufactured by centrifugal casting (CC) and hot isostatic pressure (HIP). Reciprocating sliding wear test was carried out for TiAl, it was combined with different loads and frequencies. Wear tracks were analyzed through opto-digital microscopy and electron microscopy (SEM). The results obtained reveal that CC intermetallics present the lowest volume wear lost, approximately 20% less than HIP intermetallics. This good behavior could be related to the high hardness material, associated with the main microstructure where CC intermetallic has nearly lamellar microstructure and HIP intermetallics present duplex microstructure.https://www.mdpi.com/1996-1944/15/22/8052TiAlreciprocating slidingHIPcentrifugal casting |
| spellingShingle | Segundo Shagñay Juan Cornide Elisa María Ruiz-Navas Sliding Wear Behavior of Intermetallic Ti-45Al-2Nb-2Mn-(at%)-0.8vol%TiB<sub>2</sub> Processed by Centrifugal Casting and Hot Isostatic Pressure: Influence of Microstructure Materials TiAl reciprocating sliding HIP centrifugal casting |
| title | Sliding Wear Behavior of Intermetallic Ti-45Al-2Nb-2Mn-(at%)-0.8vol%TiB<sub>2</sub> Processed by Centrifugal Casting and Hot Isostatic Pressure: Influence of Microstructure |
| title_full | Sliding Wear Behavior of Intermetallic Ti-45Al-2Nb-2Mn-(at%)-0.8vol%TiB<sub>2</sub> Processed by Centrifugal Casting and Hot Isostatic Pressure: Influence of Microstructure |
| title_fullStr | Sliding Wear Behavior of Intermetallic Ti-45Al-2Nb-2Mn-(at%)-0.8vol%TiB<sub>2</sub> Processed by Centrifugal Casting and Hot Isostatic Pressure: Influence of Microstructure |
| title_full_unstemmed | Sliding Wear Behavior of Intermetallic Ti-45Al-2Nb-2Mn-(at%)-0.8vol%TiB<sub>2</sub> Processed by Centrifugal Casting and Hot Isostatic Pressure: Influence of Microstructure |
| title_short | Sliding Wear Behavior of Intermetallic Ti-45Al-2Nb-2Mn-(at%)-0.8vol%TiB<sub>2</sub> Processed by Centrifugal Casting and Hot Isostatic Pressure: Influence of Microstructure |
| title_sort | sliding wear behavior of intermetallic ti 45al 2nb 2mn at 0 8vol tib sub 2 sub processed by centrifugal casting and hot isostatic pressure influence of microstructure |
| topic | TiAl reciprocating sliding HIP centrifugal casting |
| url | https://www.mdpi.com/1996-1944/15/22/8052 |
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