Evaluation and mechanism investigations of titanium-fire inclusiveness in aeroengine compressor
A large number of droplets and their products produced by titanium fire combustion in aeroengine compressor will cause burn through and non-inclusiveness failure of titanium alloy casing. This has shown great harm. In this study， a quantitative evaluation method for titanium fire inclusiveness of co...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | zho |
| Published: |
Journal of Materials Engineering
2025-01-01
|
| Series: | Cailiao gongcheng |
| Subjects: | |
| Online Access: | https://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2024.000595 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832592338943213568 |
|---|---|
| author | MI Guangbao SUN Ruochen QIU Yuehai DONG Fuli |
| author_facet | MI Guangbao SUN Ruochen QIU Yuehai DONG Fuli |
| author_sort | MI Guangbao |
| collection | DOAJ |
| description | A large number of droplets and their products produced by titanium fire combustion in aeroengine compressor will cause burn through and non-inclusiveness failure of titanium alloy casing. This has shown great harm. In this study， a quantitative evaluation method for titanium fire inclusiveness of compressor was explored based on the mechanism of titanium alloy melt drop ablation and laser ignition technology. A test and evaluation method was established with the characteristic parameters of the melt drop penetration resistance of two configurations of TC4 titanium alloy casing， namely horizontal expansion and vertical drip. Meanwhile， the diffusion behavior of titanium fire and the critical failure conditions under simulated airflow environment were varified by experiments as well. Those results show that the mechanism of titanium alloy droplet burning through the casing lies in the local high heat concentration formed at the droplet contact interface. Under the action of heat transfer， the kinetic energy of the atoms in the base of the titanium alloy cartridge increases rapidly， forming a penetrating liquid phase， and finally causing burn-through， that is， titanium non-inclusiveness failure. When the droplet moves horizontally in the process of extended combustion， it will be affected by some mechanism such as reverse airflow， which will weaken the expansion effect. When the droplet is adhered to the surface of the casing simulation for a long time under the action of gravity or centrifugal force， the heat released is enough to burn through the titanium alloy casing. Its critical thickness is between 1.5-2 mm. |
| format | Article |
| id | doaj-art-3203469214b54769940587dfb4e3bfbe |
| institution | Kabale University |
| issn | 1001-4381 |
| language | zho |
| publishDate | 2025-01-01 |
| publisher | Journal of Materials Engineering |
| record_format | Article |
| series | Cailiao gongcheng |
| spelling | doaj-art-3203469214b54769940587dfb4e3bfbe2025-01-21T09:44:41ZzhoJournal of Materials EngineeringCailiao gongcheng1001-43812025-01-0153114315310.11868/j.issn.1001-4381.2024.0005951001-4381（2025）01-0143-11Evaluation and mechanism investigations of titanium-fire inclusiveness in aeroengine compressorMI Guangbao0SUN Ruochen1QIU Yuehai2DONG Fuli3Aviation Key Laboratory of Science and Technology on Advanced Titanium Alloys，AECC Beijing Institute of Aeronautical Materials，Beijing 100095，ChinaAviation Key Laboratory of Science and Technology on Advanced Titanium Alloys，AECC Beijing Institute of Aeronautical Materials，Beijing 100095，ChinaAviation Key Laboratory of Science and Technology on Advanced Titanium Alloys，AECC Beijing Institute of Aeronautical Materials，Beijing 100095，ChinaAviation Key Laboratory of Science and Technology on Advanced Titanium Alloys，AECC Beijing Institute of Aeronautical Materials，Beijing 100095，ChinaA large number of droplets and their products produced by titanium fire combustion in aeroengine compressor will cause burn through and non-inclusiveness failure of titanium alloy casing. This has shown great harm. In this study， a quantitative evaluation method for titanium fire inclusiveness of compressor was explored based on the mechanism of titanium alloy melt drop ablation and laser ignition technology. A test and evaluation method was established with the characteristic parameters of the melt drop penetration resistance of two configurations of TC4 titanium alloy casing， namely horizontal expansion and vertical drip. Meanwhile， the diffusion behavior of titanium fire and the critical failure conditions under simulated airflow environment were varified by experiments as well. Those results show that the mechanism of titanium alloy droplet burning through the casing lies in the local high heat concentration formed at the droplet contact interface. Under the action of heat transfer， the kinetic energy of the atoms in the base of the titanium alloy cartridge increases rapidly， forming a penetrating liquid phase， and finally causing burn-through， that is， titanium non-inclusiveness failure. When the droplet moves horizontally in the process of extended combustion， it will be affected by some mechanism such as reverse airflow， which will weaken the expansion effect. When the droplet is adhered to the surface of the casing simulation for a long time under the action of gravity or centrifugal force， the heat released is enough to burn through the titanium alloy casing. Its critical thickness is between 1.5-2 mm.https://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2024.000595titanium alloy casingtitanium fire inclusivenessdroplet burn-throughmolecular dynamicsaeroengine |
| spellingShingle | MI Guangbao SUN Ruochen QIU Yuehai DONG Fuli Evaluation and mechanism investigations of titanium-fire inclusiveness in aeroengine compressor Cailiao gongcheng titanium alloy casing titanium fire inclusiveness droplet burn-through molecular dynamics aeroengine |
| title | Evaluation and mechanism investigations of titanium-fire inclusiveness in aeroengine compressor |
| title_full | Evaluation and mechanism investigations of titanium-fire inclusiveness in aeroengine compressor |
| title_fullStr | Evaluation and mechanism investigations of titanium-fire inclusiveness in aeroengine compressor |
| title_full_unstemmed | Evaluation and mechanism investigations of titanium-fire inclusiveness in aeroengine compressor |
| title_short | Evaluation and mechanism investigations of titanium-fire inclusiveness in aeroengine compressor |
| title_sort | evaluation and mechanism investigations of titanium fire inclusiveness in aeroengine compressor |
| topic | titanium alloy casing titanium fire inclusiveness droplet burn-through molecular dynamics aeroengine |
| url | https://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2024.000595 |
| work_keys_str_mv | AT miguangbao evaluationandmechanisminvestigationsoftitaniumfireinclusivenessinaeroenginecompressor AT sunruochen evaluationandmechanisminvestigationsoftitaniumfireinclusivenessinaeroenginecompressor AT qiuyuehai evaluationandmechanisminvestigationsoftitaniumfireinclusivenessinaeroenginecompressor AT dongfuli evaluationandmechanisminvestigationsoftitaniumfireinclusivenessinaeroenginecompressor |