Formation of abnormal structure in ZTA15 titanium alloy casting and its impact mechanism on tensile behavior
Partial block-dropping phenomenon was existed during the precision process of TA15 titanium alloy casting. In view of multiple means of microscopic physical characterization analysis such as OM/SEM/EDS/XRD and by considering the tensile performance results, the microstructure and mechanical properti...
| Main Authors: | , , |
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| Format: | Article |
| Language: | zho |
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Journal of Aeronautical Materials
2020-08-01
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| Series: | Journal of Aeronautical Materials |
| Subjects: | |
| Online Access: | http://jam.biam.ac.cn/article/doi/10.11868/j.issn.1005-5053.2020.000060 |
| _version_ | 1831767659016880128 |
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| author | LIU Gaoyang ZHAO Wenxia WANG Xi |
| author_facet | LIU Gaoyang ZHAO Wenxia WANG Xi |
| author_sort | LIU Gaoyang |
| collection | DOAJ |
| description | Partial block-dropping phenomenon was existed during the precision process of TA15 titanium alloy casting. In view of multiple means of microscopic physical characterization analysis such as OM/SEM/EDS/XRD and by considering the tensile performance results, the microstructure and mechanical properties between block-dropping area and the regular areahad been investigated. This article focused on the impact mechanism on tensile behavior that generated from the abnormal structure of block-dropping area. The results reveal that both the block-dropping area and the regular area show bi-modal microstructure, whereas the β phase concentration of the block-dropping area is far beyond the regular area and emerges as β spot. Microanalysis shows that the segregation of Fe is the major factor causing the abnormal structure and β spot, as well as the sharp plasticity decreases of alloy. The segregated Fe alters the microstructure and properties of the alloy, mainly because the saturation of Fe in α-Ti is only 0.1%, which leads to the formation of brittle TiFe eutectic phase. The increase of strength reduces the plasticity of the alloy casting, and further lead to the block-dropping during the process. |
| first_indexed | 2024-12-22T06:45:19Z |
| format | Article |
| id | doaj.art-bb809ee677564ebe861dedd24a055292 |
| institution | Directory Open Access Journal |
| issn | 1005-5053 1005-5053 |
| language | zho |
| last_indexed | 2024-12-22T06:45:19Z |
| publishDate | 2020-08-01 |
| publisher | Journal of Aeronautical Materials |
| record_format | Article |
| series | Journal of Aeronautical Materials |
| spelling | doaj.art-bb809ee677564ebe861dedd24a0552922022-12-21T18:35:17ZzhoJournal of Aeronautical MaterialsJournal of Aeronautical Materials1005-50531005-50532020-08-01404455110.11868/j.issn.1005-5053.2020.000060a2020-0060Formation of abnormal structure in ZTA15 titanium alloy casting and its impact mechanism on tensile behaviorLIU Gaoyang0ZHAO Wenxia1WANG Xi2AECC Beijing Institute of Aeronautical Materials，Beijing 100095，ChinaAECC Beijing Institute of Aeronautical Materials，Beijing 100095，ChinaAECC Beijing Institute of Aeronautical Materials，Beijing 100095，ChinaPartial block-dropping phenomenon was existed during the precision process of TA15 titanium alloy casting. In view of multiple means of microscopic physical characterization analysis such as OM/SEM/EDS/XRD and by considering the tensile performance results, the microstructure and mechanical properties between block-dropping area and the regular areahad been investigated. This article focused on the impact mechanism on tensile behavior that generated from the abnormal structure of block-dropping area. The results reveal that both the block-dropping area and the regular area show bi-modal microstructure, whereas the β phase concentration of the block-dropping area is far beyond the regular area and emerges as β spot. Microanalysis shows that the segregation of Fe is the major factor causing the abnormal structure and β spot, as well as the sharp plasticity decreases of alloy. The segregated Fe alters the microstructure and properties of the alloy, mainly because the saturation of Fe in α-Ti is only 0.1%, which leads to the formation of brittle TiFe eutectic phase. The increase of strength reduces the plasticity of the alloy casting, and further lead to the block-dropping during the process.http://jam.biam.ac.cn/article/doi/10.11868/j.issn.1005-5053.2020.000060titanium alloy castingβ spottensile performancetife eutectic phaseintergranular fracture |
| spellingShingle | LIU Gaoyang ZHAO Wenxia WANG Xi Formation of abnormal structure in ZTA15 titanium alloy casting and its impact mechanism on tensile behavior Journal of Aeronautical Materials titanium alloy casting β spot tensile performance tife eutectic phase intergranular fracture |
| title | Formation of abnormal structure in ZTA15 titanium alloy casting and its impact mechanism on tensile behavior |
| title_full | Formation of abnormal structure in ZTA15 titanium alloy casting and its impact mechanism on tensile behavior |
| title_fullStr | Formation of abnormal structure in ZTA15 titanium alloy casting and its impact mechanism on tensile behavior |
| title_full_unstemmed | Formation of abnormal structure in ZTA15 titanium alloy casting and its impact mechanism on tensile behavior |
| title_short | Formation of abnormal structure in ZTA15 titanium alloy casting and its impact mechanism on tensile behavior |
| title_sort | formation of abnormal structure in zta15 titanium alloy casting and its impact mechanism on tensile behavior |
| topic | titanium alloy casting β spot tensile performance tife eutectic phase intergranular fracture |
| url | http://jam.biam.ac.cn/article/doi/10.11868/j.issn.1005-5053.2020.000060 |
| work_keys_str_mv | AT liugaoyang formationofabnormalstructureinzta15titaniumalloycastinganditsimpactmechanismontensilebehavior AT zhaowenxia formationofabnormalstructureinzta15titaniumalloycastinganditsimpactmechanismontensilebehavior AT wangxi formationofabnormalstructureinzta15titaniumalloycastinganditsimpactmechanismontensilebehavior |