A Novel Mg–CaMgSn Master Alloy for Grain Refinement in Mg–Al-Based Alloys
A novel grain refinement method using a CaMgSn intermetallic phase was investigated via adding a Mg–CaMgSn master alloy to an AZ31 magnesium alloy. The results showed a remarkable grain refinement effect in as-cast AZ31, with the average grain size reduced from approximately 260–93 μm after adding 0...
| 發表在: | Metals |
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| Main Authors: | , , , , , , |
| 格式: | Article |
| 語言: | 英语 |
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MDPI AG
2021-10-01
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| 在線閱讀: | https://www.mdpi.com/2075-4701/11/11/1722 |
| _version_ | 1850418522768801792 |
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| author | Jianyue Zhang Guanyu Zhou Bin Jiang Alan Luo Xuzhe Zhao Aitao Tang Fusheng Pan |
| author_facet | Jianyue Zhang Guanyu Zhou Bin Jiang Alan Luo Xuzhe Zhao Aitao Tang Fusheng Pan |
| author_sort | Jianyue Zhang |
| collection | DOAJ |
| container_title | Metals |
| description | A novel grain refinement method using a CaMgSn intermetallic phase was investigated via adding a Mg–CaMgSn master alloy to an AZ31 magnesium alloy. The results showed a remarkable grain refinement effect in as-cast AZ31, with the average grain size reduced from approximately 260–93 μm after adding 0.45 wt.% CaMgSn particles. The added CaMgSn phase was found in grain interiors and acted as heterogeneous nucleation sites during solidification. The edge-to-edge matching model confirmed a low mismatch value of 2.3% for the <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mrow><mo>{</mo><mn>0002</mn><mo>}</mo></mrow><mrow><mi>Mg</mi></mrow></msub><mo>/</mo><msub><mrow><mo>{</mo><mn>211</mn><mo>}</mo></mrow><mrow><mi>CaMgSn</mi></mrow></msub></mrow></semantics></math></inline-formula> close-packed plane, suggesting that {211}<sub>CaMgSn</sub> was the possible matching plane for Mg nucleation. The microhardness and compressive yield strength were also improved by adding CaMgSn particles, confirming that adding Mg–CaMgSn master alloy was an effective method for refining the microstructure and improving the mechanical properties of Mg–Al-based alloys. |
| format | Article |
| id | doaj-art-a4873b0c7c4e4b9285aeffb7acaa832f |
| institution | Directory of Open Access Journals |
| issn | 2075-4701 |
| language | English |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| spelling | doaj-art-a4873b0c7c4e4b9285aeffb7acaa832f2025-08-19T22:43:58ZengMDPI AGMetals2075-47012021-10-011111172210.3390/met11111722A Novel Mg–CaMgSn Master Alloy for Grain Refinement in Mg–Al-Based AlloysJianyue Zhang0Guanyu Zhou1Bin Jiang2Alan Luo3Xuzhe Zhao4Aitao Tang5Fusheng Pan6Department of Materials Science and Engineering, The Ohio State University, Columbus, OH 43210, USACollege of Materials Science and Engineering, Chongqing University, Chongqing 400044, ChinaCollege of Materials Science and Engineering, Chongqing University, Chongqing 400044, ChinaDepartment of Materials Science and Engineering, The Ohio State University, Columbus, OH 43210, USABöllhoff Inc., Troy, MI 48084, USACollege of Materials Science and Engineering, Chongqing University, Chongqing 400044, ChinaCollege of Materials Science and Engineering, Chongqing University, Chongqing 400044, ChinaA novel grain refinement method using a CaMgSn intermetallic phase was investigated via adding a Mg–CaMgSn master alloy to an AZ31 magnesium alloy. The results showed a remarkable grain refinement effect in as-cast AZ31, with the average grain size reduced from approximately 260–93 μm after adding 0.45 wt.% CaMgSn particles. The added CaMgSn phase was found in grain interiors and acted as heterogeneous nucleation sites during solidification. The edge-to-edge matching model confirmed a low mismatch value of 2.3% for the <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mrow><mo>{</mo><mn>0002</mn><mo>}</mo></mrow><mrow><mi>Mg</mi></mrow></msub><mo>/</mo><msub><mrow><mo>{</mo><mn>211</mn><mo>}</mo></mrow><mrow><mi>CaMgSn</mi></mrow></msub></mrow></semantics></math></inline-formula> close-packed plane, suggesting that {211}<sub>CaMgSn</sub> was the possible matching plane for Mg nucleation. The microhardness and compressive yield strength were also improved by adding CaMgSn particles, confirming that adding Mg–CaMgSn master alloy was an effective method for refining the microstructure and improving the mechanical properties of Mg–Al-based alloys.https://www.mdpi.com/2075-4701/11/11/1722castinggrain refinementmagnesium alloyssolidification |
| spellingShingle | Jianyue Zhang Guanyu Zhou Bin Jiang Alan Luo Xuzhe Zhao Aitao Tang Fusheng Pan A Novel Mg–CaMgSn Master Alloy for Grain Refinement in Mg–Al-Based Alloys casting grain refinement magnesium alloys solidification |
| title | A Novel Mg–CaMgSn Master Alloy for Grain Refinement in Mg–Al-Based Alloys |
| title_full | A Novel Mg–CaMgSn Master Alloy for Grain Refinement in Mg–Al-Based Alloys |
| title_fullStr | A Novel Mg–CaMgSn Master Alloy for Grain Refinement in Mg–Al-Based Alloys |
| title_full_unstemmed | A Novel Mg–CaMgSn Master Alloy for Grain Refinement in Mg–Al-Based Alloys |
| title_short | A Novel Mg–CaMgSn Master Alloy for Grain Refinement in Mg–Al-Based Alloys |
| title_sort | novel mg camgsn master alloy for grain refinement in mg al based alloys |
| topic | casting grain refinement magnesium alloys solidification |
| url | https://www.mdpi.com/2075-4701/11/11/1722 |
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