Effect of Sc on the Hot Cracking Properties of 7xxx Aluminum Alloy and the Microstructure of Squeeze Castings
In this paper, the effect of adding the refiner Sc to the high Zn/Mg ratio 7xxx series aluminum alloy melt on the hot tearing performance, microstructure, and mechanical properties of the alloy is studied. The hot tearing performance test (CRC) method is used to evaluate the hot tearing performance...
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MDPI AG
2021-11-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/14/22/6881 |
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| author | Yongtao Xu Zhifeng Zhang Zhihua Gao Yuelong Bai Purui Zhao Weimin Mao |
| author_facet | Yongtao Xu Zhifeng Zhang Zhihua Gao Yuelong Bai Purui Zhao Weimin Mao |
| author_sort | Yongtao Xu |
| collection | DOAJ |
| description | In this paper, the effect of adding the refiner Sc to the high Zn/Mg ratio 7xxx series aluminum alloy melt on the hot tearing performance, microstructure, and mechanical properties of the alloy is studied. The hot tearing performance test (CRC) method is used to evaluate the hot tearing performance of the alloy. The squeeze casting process was used to form solid cylindrical parts to analyze the structure and properties of the alloy. This study shows that the hot cracking sensitivity of the alloy after the addition of the refiner Sc is significantly reduced. The ingot grain size is significantly reduced, and the average grain size is reduced from about 86 μm to about 53 μm. While the mechanical properties are significantly improved, and the tensile strength reduced from 552 MPa is increased to 571 MPa, and the elongation rate is increased from 11% to 14%. |
| first_indexed | 2024-03-10T05:19:49Z |
| format | Article |
| id | doaj.art-848b8bdbdb3a494d9f9f505a32036c88 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T05:19:49Z |
| publishDate | 2021-11-01 |
| publisher | MDPI AG |
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| series | Materials |
| spelling | doaj.art-848b8bdbdb3a494d9f9f505a32036c882023-11-23T00:10:13ZengMDPI AGMaterials1996-19442021-11-011422688110.3390/ma14226881Effect of Sc on the Hot Cracking Properties of 7xxx Aluminum Alloy and the Microstructure of Squeeze CastingsYongtao Xu0Zhifeng Zhang1Zhihua Gao2Yuelong Bai3Purui Zhao4Weimin Mao5National Engineering & Technology Research Center for Non-Ferrous Metals Composites, GRINM Group Corporation Limited, Beijing 101407, ChinaNational Engineering & Technology Research Center for Non-Ferrous Metals Composites, GRINM Group Corporation Limited, Beijing 101407, ChinaNational Engineering & Technology Research Center for Non-Ferrous Metals Composites, GRINM Group Corporation Limited, Beijing 101407, ChinaNational Engineering & Technology Research Center for Non-Ferrous Metals Composites, GRINM Group Corporation Limited, Beijing 101407, ChinaNational Engineering & Technology Research Center for Non-Ferrous Metals Composites, GRINM Group Corporation Limited, Beijing 101407, ChinaSchool of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100088, ChinaIn this paper, the effect of adding the refiner Sc to the high Zn/Mg ratio 7xxx series aluminum alloy melt on the hot tearing performance, microstructure, and mechanical properties of the alloy is studied. The hot tearing performance test (CRC) method is used to evaluate the hot tearing performance of the alloy. The squeeze casting process was used to form solid cylindrical parts to analyze the structure and properties of the alloy. This study shows that the hot cracking sensitivity of the alloy after the addition of the refiner Sc is significantly reduced. The ingot grain size is significantly reduced, and the average grain size is reduced from about 86 μm to about 53 μm. While the mechanical properties are significantly improved, and the tensile strength reduced from 552 MPa is increased to 571 MPa, and the elongation rate is increased from 11% to 14%.https://www.mdpi.com/1996-1944/14/22/6881aluminum alloyshot tearingmicrostructuremechanical properties |
| spellingShingle | Yongtao Xu Zhifeng Zhang Zhihua Gao Yuelong Bai Purui Zhao Weimin Mao Effect of Sc on the Hot Cracking Properties of 7xxx Aluminum Alloy and the Microstructure of Squeeze Castings Materials aluminum alloys hot tearing microstructure mechanical properties |
| title | Effect of Sc on the Hot Cracking Properties of 7xxx Aluminum Alloy and the Microstructure of Squeeze Castings |
| title_full | Effect of Sc on the Hot Cracking Properties of 7xxx Aluminum Alloy and the Microstructure of Squeeze Castings |
| title_fullStr | Effect of Sc on the Hot Cracking Properties of 7xxx Aluminum Alloy and the Microstructure of Squeeze Castings |
| title_full_unstemmed | Effect of Sc on the Hot Cracking Properties of 7xxx Aluminum Alloy and the Microstructure of Squeeze Castings |
| title_short | Effect of Sc on the Hot Cracking Properties of 7xxx Aluminum Alloy and the Microstructure of Squeeze Castings |
| title_sort | effect of sc on the hot cracking properties of 7xxx aluminum alloy and the microstructure of squeeze castings |
| topic | aluminum alloys hot tearing microstructure mechanical properties |
| url | https://www.mdpi.com/1996-1944/14/22/6881 |
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