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...
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MDPI AG
2021
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oai:doaj.org-article:a4873b0c7c4e4b9285aeffb7acaa832f2021-11-25T18:21:29ZA Novel Mg–CaMgSn Master Alloy for Grain Refinement in Mg–Al-Based Alloys10.3390/met111117222075-4701https://doaj.org/article/a4873b0c7c4e4b9285aeffb7acaa832f2021-10-01T00:00:00Zhttps://www.mdpi.com/2075-4701/11/11/1722https://doaj.org/toc/2075-4701A 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.Jianyue ZhangGuanyu ZhouBin JiangAlan LuoXuzhe ZhaoAitao TangFusheng PanMDPI AGarticlecastinggrain refinementmagnesium alloyssolidificationMining engineering. MetallurgyTN1-997ENMetals, Vol 11, Iss 1722, p 1722 (2021) |
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casting grain refinement magnesium alloys solidification Mining engineering. Metallurgy TN1-997 |
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casting grain refinement magnesium alloys solidification Mining engineering. Metallurgy TN1-997 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 |
| 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 |
| 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 |
| title |
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_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_sort |
novel mg–camgsn master alloy for grain refinement in mg–al-based alloys |
| publisher |
MDPI AG |
| publishDate |
2021 |
| url |
https://doaj.org/article/a4873b0c7c4e4b9285aeffb7acaa832f |
| work_keys_str_mv |
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