Contact fatigue performance and failure mechanisms of Fe-based small-module gears fabricated using powder metallurgy technique
Gears fabricated using powder metallurgy technique (PMT) have the potential to replace traditional wrought gears due to their very high forming efficiency and relatively low cost. However, their practical applications are restricted due to the lack of understanding of their fatigue properties and fa...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-09-01
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| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785423018008 |
| _version_ | 1797646756483170304 |
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| author | Zehua Lu Dong Wei Peitang Wei Huaiju Liu Huan Yan Shuixin Yu Guanyu Deng |
| author_facet | Zehua Lu Dong Wei Peitang Wei Huaiju Liu Huan Yan Shuixin Yu Guanyu Deng |
| author_sort | Zehua Lu |
| collection | DOAJ |
| description | Gears fabricated using powder metallurgy technique (PMT) have the potential to replace traditional wrought gears due to their very high forming efficiency and relatively low cost. However, their practical applications are restricted due to the lack of understanding of their fatigue properties and failure mechanisms. This work investigates the contact fatigue performance and corresponding failure mechanism of a typical Fe-based small-module gears fabricated by PMT. The fatigue tests were conducted under grease lubrication condition, using a power-opened small-module gear testing rig. The experimental results show that the current PMT fabricated small-module gears exhibit contact fatigue properties comparable to those of traditional wrought steel gears. It has been found that the subsurface cracks induced from pores are the dominant cause of spalling of PMT fabricated small-module gears during rolling contact. The cracks tend to propagate between adjacent pores, playing a vital role in the overall fatigue life. Thus, this study suggests that PMT can be a successful method for fabricating Fe-based small-module gears with excellent contact fatigue property if formation of pores during fabrication is well inhibited. |
| first_indexed | 2024-03-11T15:07:22Z |
| format | Article |
| id | doaj.art-f19e1a037fde469da81c87c3ce734fa8 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-11T15:07:22Z |
| publishDate | 2023-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-f19e1a037fde469da81c87c3ce734fa82023-10-30T06:03:00ZengElsevierJournal of Materials Research and Technology2238-78542023-09-012614121427Contact fatigue performance and failure mechanisms of Fe-based small-module gears fabricated using powder metallurgy techniqueZehua Lu0Dong Wei1Peitang Wei2Huaiju Liu3Huan Yan4Shuixin Yu5Guanyu Deng6State Key Laboratory of Mechanical Transmissions, Chongqing University, Chongqing, 400030, ChinaState Key Laboratory of Mechanical Transmissions, Chongqing University, Chongqing, 400030, ChinaState Key Laboratory of Mechanical Transmissions, Chongqing University, Chongqing, 400030, China; Corresponding author.State Key Laboratory of Mechanical Transmissions, Chongqing University, Chongqing, 400030, ChinaState Key Laboratory of Mechanical Transmissions, Chongqing University, Chongqing, 400030, ChinaState Key Laboratory of Mechanical Transmissions, Chongqing University, Chongqing, 400030, ChinaSchool of Mechanical and Mining Engineering, University of Queensland, St Lucia, QLD 4072, AustraliaGears fabricated using powder metallurgy technique (PMT) have the potential to replace traditional wrought gears due to their very high forming efficiency and relatively low cost. However, their practical applications are restricted due to the lack of understanding of their fatigue properties and failure mechanisms. This work investigates the contact fatigue performance and corresponding failure mechanism of a typical Fe-based small-module gears fabricated by PMT. The fatigue tests were conducted under grease lubrication condition, using a power-opened small-module gear testing rig. The experimental results show that the current PMT fabricated small-module gears exhibit contact fatigue properties comparable to those of traditional wrought steel gears. It has been found that the subsurface cracks induced from pores are the dominant cause of spalling of PMT fabricated small-module gears during rolling contact. The cracks tend to propagate between adjacent pores, playing a vital role in the overall fatigue life. Thus, this study suggests that PMT can be a successful method for fabricating Fe-based small-module gears with excellent contact fatigue property if formation of pores during fabrication is well inhibited.http://www.sciencedirect.com/science/article/pii/S2238785423018008Fe-based small-module gearPowder metallurgical technique (PMT)Contact fatigue performanceFatigue failure mechanismSubsurface crack propagation |
| spellingShingle | Zehua Lu Dong Wei Peitang Wei Huaiju Liu Huan Yan Shuixin Yu Guanyu Deng Contact fatigue performance and failure mechanisms of Fe-based small-module gears fabricated using powder metallurgy technique Journal of Materials Research and Technology Fe-based small-module gear Powder metallurgical technique (PMT) Contact fatigue performance Fatigue failure mechanism Subsurface crack propagation |
| title | Contact fatigue performance and failure mechanisms of Fe-based small-module gears fabricated using powder metallurgy technique |
| title_full | Contact fatigue performance and failure mechanisms of Fe-based small-module gears fabricated using powder metallurgy technique |
| title_fullStr | Contact fatigue performance and failure mechanisms of Fe-based small-module gears fabricated using powder metallurgy technique |
| title_full_unstemmed | Contact fatigue performance and failure mechanisms of Fe-based small-module gears fabricated using powder metallurgy technique |
| title_short | Contact fatigue performance and failure mechanisms of Fe-based small-module gears fabricated using powder metallurgy technique |
| title_sort | contact fatigue performance and failure mechanisms of fe based small module gears fabricated using powder metallurgy technique |
| topic | Fe-based small-module gear Powder metallurgical technique (PMT) Contact fatigue performance Fatigue failure mechanism Subsurface crack propagation |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423018008 |
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