The effect of heat treatment on microstructure of the melt-spun Mg–7Y–4Gd–5Zn–0.4Zr alloy
The microstructure evolution of the melt-spun Mg–7Y–4Gd–5Zn–0.4Zr alloy during annealing treatment has been investigated by using X-ray diffraction (XRD), optical microscope (OM), differential scanning calorimetry (DSC) and transmission electron microscope (TEM). The results indicated that two kinds...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2016-06-01
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| Series: | Journal of Magnesium and Alloys |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2213956716300160 |
| _version_ | 1827279183669100544 |
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| author | Ke Liu Wenbo Du Shubo Li Zhaohui Wang |
| author_facet | Ke Liu Wenbo Du Shubo Li Zhaohui Wang |
| author_sort | Ke Liu |
| collection | DOAJ |
| description | The microstructure evolution of the melt-spun Mg–7Y–4Gd–5Zn–0.4Zr alloy during annealing treatment has been investigated by using X-ray diffraction (XRD), optical microscope (OM), differential scanning calorimetry (DSC) and transmission electron microscope (TEM). The results indicated that two kinds of primary grains were contained in the melt-spun alloy. One was the supersaturated magnesium matrix, and the other was the 18R-LPSO phase. The 18R-LPSO phase transformed into the 14H-LPSO phase during annealing treatment at 300 °C for 0.5 h. The new precipitate of the 14H-LPSO phase was found at 300 °C for 5 h. Lots of linear precipitates formed as well as some precipitate with quadrangular morphology in matrix at 500 °C for 0.5 h. The melt-spun alloy displayed the highest hardness of 103 NHV after annealing treatment at 300 °C for 5 h. |
| first_indexed | 2024-04-24T08:14:56Z |
| format | Article |
| id | doaj.art-5f66e5f58cba455091eece4ec84f8f7d |
| institution | Directory Open Access Journal |
| issn | 2213-9567 |
| language | English |
| last_indexed | 2024-04-24T08:14:56Z |
| publishDate | 2016-06-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Journal of Magnesium and Alloys |
| spelling | doaj.art-5f66e5f58cba455091eece4ec84f8f7d2024-04-17T04:21:59ZengKeAi Communications Co., Ltd.Journal of Magnesium and Alloys2213-95672016-06-01429910310.1016/j.jma.2016.04.006The effect of heat treatment on microstructure of the melt-spun Mg–7Y–4Gd–5Zn–0.4Zr alloyKe LiuWenbo DuShubo LiZhaohui WangThe microstructure evolution of the melt-spun Mg–7Y–4Gd–5Zn–0.4Zr alloy during annealing treatment has been investigated by using X-ray diffraction (XRD), optical microscope (OM), differential scanning calorimetry (DSC) and transmission electron microscope (TEM). The results indicated that two kinds of primary grains were contained in the melt-spun alloy. One was the supersaturated magnesium matrix, and the other was the 18R-LPSO phase. The 18R-LPSO phase transformed into the 14H-LPSO phase during annealing treatment at 300 °C for 0.5 h. The new precipitate of the 14H-LPSO phase was found at 300 °C for 5 h. Lots of linear precipitates formed as well as some precipitate with quadrangular morphology in matrix at 500 °C for 0.5 h. The melt-spun alloy displayed the highest hardness of 103 NHV after annealing treatment at 300 °C for 5 h.http://www.sciencedirect.com/science/article/pii/S2213956716300160Mg-RE alloyMelt-spunMicrostructureLPSO phase |
| spellingShingle | Ke Liu Wenbo Du Shubo Li Zhaohui Wang The effect of heat treatment on microstructure of the melt-spun Mg–7Y–4Gd–5Zn–0.4Zr alloy Journal of Magnesium and Alloys Mg-RE alloy Melt-spun Microstructure LPSO phase |
| title | The effect of heat treatment on microstructure of the melt-spun Mg–7Y–4Gd–5Zn–0.4Zr alloy |
| title_full | The effect of heat treatment on microstructure of the melt-spun Mg–7Y–4Gd–5Zn–0.4Zr alloy |
| title_fullStr | The effect of heat treatment on microstructure of the melt-spun Mg–7Y–4Gd–5Zn–0.4Zr alloy |
| title_full_unstemmed | The effect of heat treatment on microstructure of the melt-spun Mg–7Y–4Gd–5Zn–0.4Zr alloy |
| title_short | The effect of heat treatment on microstructure of the melt-spun Mg–7Y–4Gd–5Zn–0.4Zr alloy |
| title_sort | effect of heat treatment on microstructure of the melt spun mg 7y 4gd 5zn 0 4zr alloy |
| topic | Mg-RE alloy Melt-spun Microstructure LPSO phase |
| url | http://www.sciencedirect.com/science/article/pii/S2213956716300160 |
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