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
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oai:doaj.org-article:848b8bdbdb3a494d9f9f505a32036c882021-11-25T18:14:25ZEffect of Sc on the Hot Cracking Properties of 7xxx Aluminum Alloy and the Microstructure of Squeeze Castings10.3390/ma142268811996-1944https://doaj.org/article/848b8bdbdb3a494d9f9f505a32036c882021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/22/6881https://doaj.org/toc/1996-1944In 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%.Yongtao XuZhifeng ZhangZhihua GaoYuelong BaiPurui ZhaoWeimin MaoMDPI AGarticlealuminum alloyshot tearingmicrostructuremechanical propertiesTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6881, p 6881 (2021) |
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DOAJ |
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DOAJ |
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EN |
| topic |
aluminum alloys hot tearing microstructure mechanical properties Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 |
| spellingShingle |
aluminum alloys hot tearing microstructure mechanical properties Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 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 |
| 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%. |
| format |
article |
| 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 |
| title |
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_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_sort |
effect of sc on the hot cracking properties of 7xxx aluminum alloy and the microstructure of squeeze castings |
| publisher |
MDPI AG |
| publishDate |
2021 |
| url |
https://doaj.org/article/848b8bdbdb3a494d9f9f505a32036c88 |
| work_keys_str_mv |
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