Enhancing the creep resistance in a RE-free cast Mg-Al-Ca alloy through microalloying of Ti
High temperature performance of magnesium alloys can be tailored by either grain size or precipitates in the grain interior. In this study, exceptional creep resistance was successfully acquired in a RE-free cast Mg-Al-Ca-Ti (AC51Ti) alloy. Microalloying of Ti (0.01 wt.%) has been found to be benefi...
Saved in:
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
KeAi Communications Co., Ltd.
2025-01-01
|
| Series: | Journal of Magnesium and Alloys |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2213956724001117 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832087598313504768 |
|---|---|
| author | Zhuang Cui Yang Liu Ying Zeng Manping Liu Xiaochun Liu Shiwei Xu Xuefei Chen Qudong Wang |
| author_facet | Zhuang Cui Yang Liu Ying Zeng Manping Liu Xiaochun Liu Shiwei Xu Xuefei Chen Qudong Wang |
| author_sort | Zhuang Cui |
| collection | DOAJ |
| description | High temperature performance of magnesium alloys can be tailored by either grain size or precipitates in the grain interior. In this study, exceptional creep resistance was successfully acquired in a RE-free cast Mg-Al-Ca-Ti (AC51Ti) alloy. Microalloying of Ti (0.01 wt.%) has been found to be beneficial to the improvement of the tensile creep resistance in a RE-free cast Mg-5Al-0.35Mn-(1Ca) (AC51) alloy, showing a low state creep rate (SCR) of 2.70 × 10−9 s−1 at 200 °C/50 MPa, which is even better than that of many reported RE-containing Mg alloys. The presence of trace Ti contributes to the substantial refinement and more uniform distribution of Al2Ca precipitates in the matrix. At the same time, the microalloying of Ti improves the solubility of Al and Ca in the matrix. It is reasonable to believe that the microalloying of Ti induced re-organization of Al2Ca precipitates, dissolved a larger amount of Al and Ca atoms into magnesium lattice, and increased the possibility of interaction between GB/dislocations and precipitates, which strongly correlates with the high temperature properties. The creep strengthening mechanisms primarily attributed to both second phase strengthening and solid solution strengthening were separately proposed based on the experimental investigations. |
| format | Article |
| id | doaj-art-cf48c3786e5b4863812f93c0bcfc68de |
| institution | Kabale University |
| issn | 2213-9567 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Journal of Magnesium and Alloys |
| spelling | doaj-art-cf48c3786e5b4863812f93c0bcfc68de2025-02-06T05:11:38ZengKeAi Communications Co., Ltd.Journal of Magnesium and Alloys2213-95672025-01-01131414428Enhancing the creep resistance in a RE-free cast Mg-Al-Ca alloy through microalloying of TiZhuang Cui0Yang Liu1Ying Zeng2Manping Liu3Xiaochun Liu4Shiwei Xu5Xuefei Chen6Qudong Wang7School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, ChinaNational Engineering Research Center of Light Alloy Net Forming and Key State Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; Corresponding authors.Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Material Science and Engineering, Southwest Jiaotong University, Chengdu 610031, ChinaSchool of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China; Corresponding authors.Institute of Metals, College of Material Science and Engineering, Changsha University of Science & Technology, Changsha 410004, ChinaCollege of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, ChinaSchool of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, ChinaNational Engineering Research Center of Light Alloy Net Forming and Key State Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaHigh temperature performance of magnesium alloys can be tailored by either grain size or precipitates in the grain interior. In this study, exceptional creep resistance was successfully acquired in a RE-free cast Mg-Al-Ca-Ti (AC51Ti) alloy. Microalloying of Ti (0.01 wt.%) has been found to be beneficial to the improvement of the tensile creep resistance in a RE-free cast Mg-5Al-0.35Mn-(1Ca) (AC51) alloy, showing a low state creep rate (SCR) of 2.70 × 10−9 s−1 at 200 °C/50 MPa, which is even better than that of many reported RE-containing Mg alloys. The presence of trace Ti contributes to the substantial refinement and more uniform distribution of Al2Ca precipitates in the matrix. At the same time, the microalloying of Ti improves the solubility of Al and Ca in the matrix. It is reasonable to believe that the microalloying of Ti induced re-organization of Al2Ca precipitates, dissolved a larger amount of Al and Ca atoms into magnesium lattice, and increased the possibility of interaction between GB/dislocations and precipitates, which strongly correlates with the high temperature properties. The creep strengthening mechanisms primarily attributed to both second phase strengthening and solid solution strengthening were separately proposed based on the experimental investigations.http://www.sciencedirect.com/science/article/pii/S2213956724001117Magnesium alloyCreep mechanismsAl2Ca phaseMicroalloying of Ti |
| spellingShingle | Zhuang Cui Yang Liu Ying Zeng Manping Liu Xiaochun Liu Shiwei Xu Xuefei Chen Qudong Wang Enhancing the creep resistance in a RE-free cast Mg-Al-Ca alloy through microalloying of Ti Journal of Magnesium and Alloys Magnesium alloy Creep mechanisms Al2Ca phase Microalloying of Ti |
| title | Enhancing the creep resistance in a RE-free cast Mg-Al-Ca alloy through microalloying of Ti |
| title_full | Enhancing the creep resistance in a RE-free cast Mg-Al-Ca alloy through microalloying of Ti |
| title_fullStr | Enhancing the creep resistance in a RE-free cast Mg-Al-Ca alloy through microalloying of Ti |
| title_full_unstemmed | Enhancing the creep resistance in a RE-free cast Mg-Al-Ca alloy through microalloying of Ti |
| title_short | Enhancing the creep resistance in a RE-free cast Mg-Al-Ca alloy through microalloying of Ti |
| title_sort | enhancing the creep resistance in a re free cast mg al ca alloy through microalloying of ti |
| topic | Magnesium alloy Creep mechanisms Al2Ca phase Microalloying of Ti |
| url | http://www.sciencedirect.com/science/article/pii/S2213956724001117 |
| work_keys_str_mv | AT zhuangcui enhancingthecreepresistanceinarefreecastmgalcaalloythroughmicroalloyingofti AT yangliu enhancingthecreepresistanceinarefreecastmgalcaalloythroughmicroalloyingofti AT yingzeng enhancingthecreepresistanceinarefreecastmgalcaalloythroughmicroalloyingofti AT manpingliu enhancingthecreepresistanceinarefreecastmgalcaalloythroughmicroalloyingofti AT xiaochunliu enhancingthecreepresistanceinarefreecastmgalcaalloythroughmicroalloyingofti AT shiweixu enhancingthecreepresistanceinarefreecastmgalcaalloythroughmicroalloyingofti AT xuefeichen enhancingthecreepresistanceinarefreecastmgalcaalloythroughmicroalloyingofti AT qudongwang enhancingthecreepresistanceinarefreecastmgalcaalloythroughmicroalloyingofti |