Effect of addition of minor amounts of Sb and Gd on hot tearing susceptibility of Mg-5Al-3Ca alloy
The effects of addition of minor amount of (0.5 wt.%) antimony (Sb) or gadolinium (Gd) and combined addition of Sb and Gd (0.5 wt.%, respectively) on the hot tearing susceptibility (HTS) of Mg-5Al-3Ca alloy were investigated experimentally using a “T-shaped” hot tearing measuring system. Various sol...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2023-02-01
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| Series: | Journal of Magnesium and Alloys |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2213956721001444 |
| _version_ | 1797204217007439872 |
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| author | Xudong Du Feng Wang Zhi Wang Le Zhou Zheng Liu Pingli Mao |
| author_facet | Xudong Du Feng Wang Zhi Wang Le Zhou Zheng Liu Pingli Mao |
| author_sort | Xudong Du |
| collection | DOAJ |
| description | The effects of addition of minor amount of (0.5 wt.%) antimony (Sb) or gadolinium (Gd) and combined addition of Sb and Gd (0.5 wt.%, respectively) on the hot tearing susceptibility (HTS) of Mg-5Al-3Ca alloy were investigated experimentally using a “T-shaped” hot tearing measuring system. Various solidification parameters of the alloys were measured and calculated through thermal analysis experiments. The microstructure, grain size, and morphology of the crack zone were characterized by scanning electron microscopy and electron backscatter diffraction, and the crystal phases of the alloys were analyzed by X-ray diffraction and energy-dispersive X-ray spectroscopy. The results showed that the addition of 0.5 wt.% Gd resulted in the increase in the vulnerable temperature range (Tv) and reduced the eutectic structure content that could participate in feeding, thereby improving the HTS of the alloy. However, addition of 0.5 wt.% Sb or combined addition of Gd and Sb (0.5 wt.%, respectively) to the Mg-5Al-3Ca alloy shortened the Tv and improved the skeleton strength of the alloy, thereby reducing HTS. Moreover, significantly refined structure of Mg-5Al-3Ca-0.5Gd-0.5Sb alloy improved the feeding ability of the eutectic structure, thus the alloy exhibited the lowest HTS. |
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| format | Article |
| id | doaj.art-c662b074d9f64cdea7e6967d50f3990f |
| institution | Directory Open Access Journal |
| issn | 2213-9567 |
| language | English |
| last_indexed | 2024-04-24T08:31:43Z |
| publishDate | 2023-02-01 |
| publisher | KeAi Communications Co., Ltd. |
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| series | Journal of Magnesium and Alloys |
| spelling | doaj.art-c662b074d9f64cdea7e6967d50f3990f2024-04-16T19:43:11ZengKeAi Communications Co., Ltd.Journal of Magnesium and Alloys2213-95672023-02-01112694705Effect of addition of minor amounts of Sb and Gd on hot tearing susceptibility of Mg-5Al-3Ca alloyXudong Du0Feng Wang1Zhi Wang2Le Zhou3Zheng Liu4Pingli Mao5School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, P R China; Key Laboratory of Magnesium Alloys and the Processing technology of Liaoning Province, Shenyang 110870, P R ChinaSchool of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, P R China; Key Laboratory of Magnesium Alloys and the Processing technology of Liaoning Province, Shenyang 110870, P R China; Corresponding author.School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, P R China; Key Laboratory of Magnesium Alloys and the Processing technology of Liaoning Province, Shenyang 110870, P R ChinaSchool of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, P R China; Key Laboratory of Magnesium Alloys and the Processing technology of Liaoning Province, Shenyang 110870, P R ChinaSchool of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, P R China; Key Laboratory of Magnesium Alloys and the Processing technology of Liaoning Province, Shenyang 110870, P R ChinaSchool of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, P R China; Key Laboratory of Magnesium Alloys and the Processing technology of Liaoning Province, Shenyang 110870, P R ChinaThe effects of addition of minor amount of (0.5 wt.%) antimony (Sb) or gadolinium (Gd) and combined addition of Sb and Gd (0.5 wt.%, respectively) on the hot tearing susceptibility (HTS) of Mg-5Al-3Ca alloy were investigated experimentally using a “T-shaped” hot tearing measuring system. Various solidification parameters of the alloys were measured and calculated through thermal analysis experiments. The microstructure, grain size, and morphology of the crack zone were characterized by scanning electron microscopy and electron backscatter diffraction, and the crystal phases of the alloys were analyzed by X-ray diffraction and energy-dispersive X-ray spectroscopy. The results showed that the addition of 0.5 wt.% Gd resulted in the increase in the vulnerable temperature range (Tv) and reduced the eutectic structure content that could participate in feeding, thereby improving the HTS of the alloy. However, addition of 0.5 wt.% Sb or combined addition of Gd and Sb (0.5 wt.%, respectively) to the Mg-5Al-3Ca alloy shortened the Tv and improved the skeleton strength of the alloy, thereby reducing HTS. Moreover, significantly refined structure of Mg-5Al-3Ca-0.5Gd-0.5Sb alloy improved the feeding ability of the eutectic structure, thus the alloy exhibited the lowest HTS.http://www.sciencedirect.com/science/article/pii/S2213956721001444Hot tearing susceptibilityMg-5Al-3Ca alloyThermal analysisMicrostructure |
| spellingShingle | Xudong Du Feng Wang Zhi Wang Le Zhou Zheng Liu Pingli Mao Effect of addition of minor amounts of Sb and Gd on hot tearing susceptibility of Mg-5Al-3Ca alloy Journal of Magnesium and Alloys Hot tearing susceptibility Mg-5Al-3Ca alloy Thermal analysis Microstructure |
| title | Effect of addition of minor amounts of Sb and Gd on hot tearing susceptibility of Mg-5Al-3Ca alloy |
| title_full | Effect of addition of minor amounts of Sb and Gd on hot tearing susceptibility of Mg-5Al-3Ca alloy |
| title_fullStr | Effect of addition of minor amounts of Sb and Gd on hot tearing susceptibility of Mg-5Al-3Ca alloy |
| title_full_unstemmed | Effect of addition of minor amounts of Sb and Gd on hot tearing susceptibility of Mg-5Al-3Ca alloy |
| title_short | Effect of addition of minor amounts of Sb and Gd on hot tearing susceptibility of Mg-5Al-3Ca alloy |
| title_sort | effect of addition of minor amounts of sb and gd on hot tearing susceptibility of mg 5al 3ca alloy |
| topic | Hot tearing susceptibility Mg-5Al-3Ca alloy Thermal analysis Microstructure |
| url | http://www.sciencedirect.com/science/article/pii/S2213956721001444 |
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