Enhanced mechanical properties and corrosion resistance of friction-stir processed ultralight LA141 magnesium-lithium-aluminum alloy
This study focuses on conducting friction-stir processing (FSP) on 3 mm thick LA141 alloy using different tools. Under low heat input conditions of 600 rpm and 200 mm/min, the use of the WC-Co cemented carbide tool successfully produced a defect-free stir zone. This stir zone exhibited an ultrafine...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2024-05-01
|
| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424006951 |
| _version_ | 1797234032263561216 |
|---|---|
| author | Nan Xu Zhonghao Qiu Qining Song Zhaoyang Liu Xinke Ji Dan Wang |
| author_facet | Nan Xu Zhonghao Qiu Qining Song Zhaoyang Liu Xinke Ji Dan Wang |
| author_sort | Nan Xu |
| collection | DOAJ |
| description | This study focuses on conducting friction-stir processing (FSP) on 3 mm thick LA141 alloy using different tools. Under low heat input conditions of 600 rpm and 200 mm/min, the use of the WC-Co cemented carbide tool successfully produced a defect-free stir zone. This stir zone exhibited an ultrafine grain structure resulting from continuous dynamic recrystallization. Additionally, the stir zone introduced massive grain boundaries, nanoscale MgAlLi2 particles, and stacking faults. The stir zone displayed a favorable balance of strength and ductility. The enhanced strength is attributed to the inhibitory effect of nanoscale MgAlLi2 particles, grain boundaries, and Lomer-Cottrell locks on dislocation movement. The improved work hardening ability and ductility can be attributed to the increase in stacking faults, Lomer-Cottrell locks, and deformation twins during deformation. Furthermore, the stir zone showed improved corrosion resistance, characterized by lower corrosion current density and larger polarization resistance. This improvement in corrosion resistance can be attributed to multiple factors. These include the reduced defect density, refined and evenly distributed MgLiAl2 particles that weakened galvanic corrosion effects, and the presence of more stable Li2CO3 and Al2O3 compounds that resulted in a compact and protective film. |
| first_indexed | 2024-04-24T16:25:37Z |
| format | Article |
| id | doaj.art-44b7c603d356411b9524c127fae7651d |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-04-24T16:25:37Z |
| publishDate | 2024-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-44b7c603d356411b9524c127fae7651d2024-03-31T04:37:27ZengElsevierJournal of Materials Research and Technology2238-78542024-05-013015531571Enhanced mechanical properties and corrosion resistance of friction-stir processed ultralight LA141 magnesium-lithium-aluminum alloyNan Xu0Zhonghao Qiu1Qining Song2Zhaoyang Liu3Xinke Ji4Dan Wang5College of Materials Science and Engineering, Hohai University, Changzhou, 213200, China; Corresponding author.College of Materials Science and Engineering, Hohai University, Changzhou, 213200, ChinaCollege of Materials Science and Engineering, Hohai University, Changzhou, 213200, ChinaCollege of Materials Science and Engineering, Hohai University, Changzhou, 213200, ChinaCollege of Materials Science and Engineering, Hohai University, Changzhou, 213200, ChinaCollege of Materials Science and Engineering, Jiangsu University, Zhenjiang, 212013, ChinaThis study focuses on conducting friction-stir processing (FSP) on 3 mm thick LA141 alloy using different tools. Under low heat input conditions of 600 rpm and 200 mm/min, the use of the WC-Co cemented carbide tool successfully produced a defect-free stir zone. This stir zone exhibited an ultrafine grain structure resulting from continuous dynamic recrystallization. Additionally, the stir zone introduced massive grain boundaries, nanoscale MgAlLi2 particles, and stacking faults. The stir zone displayed a favorable balance of strength and ductility. The enhanced strength is attributed to the inhibitory effect of nanoscale MgAlLi2 particles, grain boundaries, and Lomer-Cottrell locks on dislocation movement. The improved work hardening ability and ductility can be attributed to the increase in stacking faults, Lomer-Cottrell locks, and deformation twins during deformation. Furthermore, the stir zone showed improved corrosion resistance, characterized by lower corrosion current density and larger polarization resistance. This improvement in corrosion resistance can be attributed to multiple factors. These include the reduced defect density, refined and evenly distributed MgLiAl2 particles that weakened galvanic corrosion effects, and the presence of more stable Li2CO3 and Al2O3 compounds that resulted in a compact and protective film.http://www.sciencedirect.com/science/article/pii/S2238785424006951Magnesium alloyFriction-stir processingMechanical propertiesCorrosion resistance |
| spellingShingle | Nan Xu Zhonghao Qiu Qining Song Zhaoyang Liu Xinke Ji Dan Wang Enhanced mechanical properties and corrosion resistance of friction-stir processed ultralight LA141 magnesium-lithium-aluminum alloy Journal of Materials Research and Technology Magnesium alloy Friction-stir processing Mechanical properties Corrosion resistance |
| title | Enhanced mechanical properties and corrosion resistance of friction-stir processed ultralight LA141 magnesium-lithium-aluminum alloy |
| title_full | Enhanced mechanical properties and corrosion resistance of friction-stir processed ultralight LA141 magnesium-lithium-aluminum alloy |
| title_fullStr | Enhanced mechanical properties and corrosion resistance of friction-stir processed ultralight LA141 magnesium-lithium-aluminum alloy |
| title_full_unstemmed | Enhanced mechanical properties and corrosion resistance of friction-stir processed ultralight LA141 magnesium-lithium-aluminum alloy |
| title_short | Enhanced mechanical properties and corrosion resistance of friction-stir processed ultralight LA141 magnesium-lithium-aluminum alloy |
| title_sort | enhanced mechanical properties and corrosion resistance of friction stir processed ultralight la141 magnesium lithium aluminum alloy |
| topic | Magnesium alloy Friction-stir processing Mechanical properties Corrosion resistance |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424006951 |
| work_keys_str_mv | AT nanxu enhancedmechanicalpropertiesandcorrosionresistanceoffrictionstirprocessedultralightla141magnesiumlithiumaluminumalloy AT zhonghaoqiu enhancedmechanicalpropertiesandcorrosionresistanceoffrictionstirprocessedultralightla141magnesiumlithiumaluminumalloy AT qiningsong enhancedmechanicalpropertiesandcorrosionresistanceoffrictionstirprocessedultralightla141magnesiumlithiumaluminumalloy AT zhaoyangliu enhancedmechanicalpropertiesandcorrosionresistanceoffrictionstirprocessedultralightla141magnesiumlithiumaluminumalloy AT xinkeji enhancedmechanicalpropertiesandcorrosionresistanceoffrictionstirprocessedultralightla141magnesiumlithiumaluminumalloy AT danwang enhancedmechanicalpropertiesandcorrosionresistanceoffrictionstirprocessedultralightla141magnesiumlithiumaluminumalloy |