Effect of homogenization on microstructure evolution and mechanical properties of aged Mg-Nd-Sm-Zn-Zr alloy
As an indispensable pre-treatment for aging, homogenization treatment has a significant effect on precipitation behavior of the Mg-RE alloys. Herein, the influence of homogenization temperature on the microstructure evolution and mechanical performance of a novel Mg-2.0Nd-2.0Sm-0.4Zn-0.4Zr (wt.%) al...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2021-01-01
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| Series: | Materials Research Express |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/2053-1591/ac3fdb |
| _version_ | 1797746709973958656 |
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| author | Tao Ma Sicong Zhao Liping Wang Zhiwei Wang Erjun Guo Yicheng Feng Dongrong Liu Changtong Wu Jingfang Li |
| author_facet | Tao Ma Sicong Zhao Liping Wang Zhiwei Wang Erjun Guo Yicheng Feng Dongrong Liu Changtong Wu Jingfang Li |
| author_sort | Tao Ma |
| collection | DOAJ |
| description | As an indispensable pre-treatment for aging, homogenization treatment has a significant effect on precipitation behavior of the Mg-RE alloys. Herein, the influence of homogenization temperature on the microstructure evolution and mechanical performance of a novel Mg-2.0Nd-2.0Sm-0.4Zn-0.4Zr (wt.%) alloy has been studied systematically. The results indicated that the as-cast alloy was mainly composed of α -Mg matrix, β -Mg _12 (Nd,Sm,Zn) phase and Zr-containing particles. Upon increasing the homogenization temperature from 500 °C to 525 °C for 8 h, the average grain size of as-homogenized alloy increased from 76 μ m to 156 μ m, and the content of β phase decreased gradually. It was worth noting that the homogenization temperature exceeded 515 °C, the β phase at the grain boundaries was completely dissolved. After aging at 200 °C for 18 h, numerous of plate-like β ′ phases were observed in α -Mg matrix. The rise in homogenization temperature was conducive to nucleation and growth of the β ′ phase. However, excessive homogenization temperature significantly coarsened grain size. The aged alloy under homogenization treatment at 515 °C for 8 h achieved optimal mechanical properties. The values of ultimate tensile strength, yield strength and elongation were 261 MPa, 154 MPa and 5.8%, respectively. The fracture mode of the aged alloy mainly exhibited a typical transgranular cleavage fracture. |
| first_indexed | 2024-03-12T15:41:43Z |
| format | Article |
| id | doaj.art-f7ec125358234412862b4e475aebdaae |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:41:43Z |
| publishDate | 2021-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-f7ec125358234412862b4e475aebdaae2023-08-09T15:58:50ZengIOP PublishingMaterials Research Express2053-15912021-01-0181212651510.1088/2053-1591/ac3fdbEffect of homogenization on microstructure evolution and mechanical properties of aged Mg-Nd-Sm-Zn-Zr alloyTao Ma0Sicong Zhao1https://orcid.org/0000-0003-0689-399XLiping Wang2https://orcid.org/0000-0002-6856-7527Zhiwei Wang3Erjun Guo4Yicheng Feng5https://orcid.org/0000-0002-4562-5827Dongrong Liu6Changtong Wu7Jingfang Li8https://orcid.org/0000-0002-7674-516XSchool of Material Science and Chemical Engineering, Harbin University of Science and Technology , Harbin150040, People’s Republic of China; Key Laboratory of Advanced Manufacturing and Intelligent Technology (MOE), Harbin University of Science and Technology , Harbin150040, People’s Republic of ChinaSchool of Material Science and Chemical Engineering, Harbin University of Science and Technology , Harbin150040, People’s Republic of China; Key Laboratory of Advanced Manufacturing and Intelligent Technology (MOE), Harbin University of Science and Technology , Harbin150040, People’s Republic of ChinaSchool of Material Science and Chemical Engineering, Harbin University of Science and Technology , Harbin150040, People’s Republic of China; Key Laboratory of Advanced Manufacturing and Intelligent Technology (MOE), Harbin University of Science and Technology , Harbin150040, People’s Republic of ChinaAECC Harbin Dongan Engine Co., Ltd, Harbin150000, People’s Republic of ChinaSchool of Material Science and Chemical Engineering, Harbin University of Science and Technology , Harbin150040, People’s Republic of China; Key Laboratory of Advanced Manufacturing and Intelligent Technology (MOE), Harbin University of Science and Technology , Harbin150040, People’s Republic of ChinaSchool of Material Science and Chemical Engineering, Harbin University of Science and Technology , Harbin150040, People’s Republic of China; Key Laboratory of Advanced Manufacturing and Intelligent Technology (MOE), Harbin University of Science and Technology , Harbin150040, People’s Republic of ChinaSchool of Material Science and Chemical Engineering, Harbin University of Science and Technology , Harbin150040, People’s Republic of China; Key Laboratory of Advanced Manufacturing and Intelligent Technology (MOE), Harbin University of Science and Technology , Harbin150040, People’s Republic of ChinaSchool of Material Science and Chemical Engineering, Harbin University of Science and Technology , Harbin150040, People’s Republic of China; Key Laboratory of Advanced Manufacturing and Intelligent Technology (MOE), Harbin University of Science and Technology , Harbin150040, People’s Republic of ChinaKey Laboratory of Functional Inorganic Material Chemistry (MOE), School of Chemistry and Materials Science, Heilongjiang University, Harbin, 150080, People’s Republic of ChinaAs an indispensable pre-treatment for aging, homogenization treatment has a significant effect on precipitation behavior of the Mg-RE alloys. Herein, the influence of homogenization temperature on the microstructure evolution and mechanical performance of a novel Mg-2.0Nd-2.0Sm-0.4Zn-0.4Zr (wt.%) alloy has been studied systematically. The results indicated that the as-cast alloy was mainly composed of α -Mg matrix, β -Mg _12 (Nd,Sm,Zn) phase and Zr-containing particles. Upon increasing the homogenization temperature from 500 °C to 525 °C for 8 h, the average grain size of as-homogenized alloy increased from 76 μ m to 156 μ m, and the content of β phase decreased gradually. It was worth noting that the homogenization temperature exceeded 515 °C, the β phase at the grain boundaries was completely dissolved. After aging at 200 °C for 18 h, numerous of plate-like β ′ phases were observed in α -Mg matrix. The rise in homogenization temperature was conducive to nucleation and growth of the β ′ phase. However, excessive homogenization temperature significantly coarsened grain size. The aged alloy under homogenization treatment at 515 °C for 8 h achieved optimal mechanical properties. The values of ultimate tensile strength, yield strength and elongation were 261 MPa, 154 MPa and 5.8%, respectively. The fracture mode of the aged alloy mainly exhibited a typical transgranular cleavage fracture.https://doi.org/10.1088/2053-1591/ac3fdbMg-Nd-Sm-Zn-Zr alloyhomogenization temperaturemicrostructure evolutionmechanical properties |
| spellingShingle | Tao Ma Sicong Zhao Liping Wang Zhiwei Wang Erjun Guo Yicheng Feng Dongrong Liu Changtong Wu Jingfang Li Effect of homogenization on microstructure evolution and mechanical properties of aged Mg-Nd-Sm-Zn-Zr alloy Materials Research Express Mg-Nd-Sm-Zn-Zr alloy homogenization temperature microstructure evolution mechanical properties |
| title | Effect of homogenization on microstructure evolution and mechanical properties of aged Mg-Nd-Sm-Zn-Zr alloy |
| title_full | Effect of homogenization on microstructure evolution and mechanical properties of aged Mg-Nd-Sm-Zn-Zr alloy |
| title_fullStr | Effect of homogenization on microstructure evolution and mechanical properties of aged Mg-Nd-Sm-Zn-Zr alloy |
| title_full_unstemmed | Effect of homogenization on microstructure evolution and mechanical properties of aged Mg-Nd-Sm-Zn-Zr alloy |
| title_short | Effect of homogenization on microstructure evolution and mechanical properties of aged Mg-Nd-Sm-Zn-Zr alloy |
| title_sort | effect of homogenization on microstructure evolution and mechanical properties of aged mg nd sm zn zr alloy |
| topic | Mg-Nd-Sm-Zn-Zr alloy homogenization temperature microstructure evolution mechanical properties |
| url | https://doi.org/10.1088/2053-1591/ac3fdb |
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