Vitali Doroshenko, Andrey Aksenov, Anastasiya Fortuna, Leonid Gorlov, Alexey S. Prosviryakov, Stanislav Cherkasov, Daria Strekalina
{"title":"不同处理方式下钙添加量对Al-3% Mg-0.8% Mn合金组织和力学性能的影响","authors":"Vitali Doroshenko, Andrey Aksenov, Anastasiya Fortuna, Leonid Gorlov, Alexey S. Prosviryakov, Stanislav Cherkasov, Daria Strekalina","doi":"10.1007/s12540-024-01885-5","DOIUrl":null,"url":null,"abstract":"<div><p>The study examined the changes in microstructure, phase composition, processability during rolling, and mechanical properties of a new alloy from the Al–Mg-Ca-Mn system: Al3Mg2Ca0.8Mn. The findings regarding the as-cast structure revealed that, alongside the aluminum matrix, two eutectic intermetallic phases—Al<sub>4</sub>Ca and Al<sub>6</sub>(Mn,Fe)—were present. The aluminum matrix was notably enriched with magnesium and manganese, while calcium solubility remained below 0.1 wt%. Thermal analysis results aligned well with theoretical predictions. Following heat treatment at 440 °C\\6 h\\water + 550 °C\\3 h\\air (SSHT), Al<sub>4</sub>Ca intermetallics were spheroidized, significantly improving the microstructure. Also after SSHT needle-like micron-sized Al<sub>10</sub>CaMn<sub>2</sub> particles formed instead of Al<sub>6</sub>(Mn,Fe). The rolling performance of the novel alloy was examined along two paths. Samples rolled without prior homogenization (path 1) exhibited better mechanical properties compared to those processed under SSHT (path 2). The resistance to recrystallization was also better for path 1. This enhancement was attributed to nanosized Al<sub>6</sub>(Mn,Fe) precipitates, absent in the samples after SSHT. Overall, both methods of rolling highlighted the benefits of calcium alloying, with a notable increase in grain size by 60%, leading to decreased strength by 30% in calcium-free alloys (YS was 135/143 MPa <i>vs.</i> 110 MPa).</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":703,"journal":{"name":"Metals and Materials International","volume":"31 8","pages":"2363 - 2379"},"PeriodicalIF":4.0000,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Impact of Calcium Addition on Microstructural and Mechanical Properties of Al-3% Mg-0.8% Mn Alloy Under Different Treatment Paths\",\"authors\":\"Vitali Doroshenko, Andrey Aksenov, Anastasiya Fortuna, Leonid Gorlov, Alexey S. Prosviryakov, Stanislav Cherkasov, Daria Strekalina\",\"doi\":\"10.1007/s12540-024-01885-5\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The study examined the changes in microstructure, phase composition, processability during rolling, and mechanical properties of a new alloy from the Al–Mg-Ca-Mn system: Al3Mg2Ca0.8Mn. The findings regarding the as-cast structure revealed that, alongside the aluminum matrix, two eutectic intermetallic phases—Al<sub>4</sub>Ca and Al<sub>6</sub>(Mn,Fe)—were present. The aluminum matrix was notably enriched with magnesium and manganese, while calcium solubility remained below 0.1 wt%. Thermal analysis results aligned well with theoretical predictions. Following heat treatment at 440 °C\\\\6 h\\\\water + 550 °C\\\\3 h\\\\air (SSHT), Al<sub>4</sub>Ca intermetallics were spheroidized, significantly improving the microstructure. Also after SSHT needle-like micron-sized Al<sub>10</sub>CaMn<sub>2</sub> particles formed instead of Al<sub>6</sub>(Mn,Fe). The rolling performance of the novel alloy was examined along two paths. Samples rolled without prior homogenization (path 1) exhibited better mechanical properties compared to those processed under SSHT (path 2). The resistance to recrystallization was also better for path 1. This enhancement was attributed to nanosized Al<sub>6</sub>(Mn,Fe) precipitates, absent in the samples after SSHT. 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Impact of Calcium Addition on Microstructural and Mechanical Properties of Al-3% Mg-0.8% Mn Alloy Under Different Treatment Paths
The study examined the changes in microstructure, phase composition, processability during rolling, and mechanical properties of a new alloy from the Al–Mg-Ca-Mn system: Al3Mg2Ca0.8Mn. The findings regarding the as-cast structure revealed that, alongside the aluminum matrix, two eutectic intermetallic phases—Al4Ca and Al6(Mn,Fe)—were present. The aluminum matrix was notably enriched with magnesium and manganese, while calcium solubility remained below 0.1 wt%. Thermal analysis results aligned well with theoretical predictions. Following heat treatment at 440 °C\6 h\water + 550 °C\3 h\air (SSHT), Al4Ca intermetallics were spheroidized, significantly improving the microstructure. Also after SSHT needle-like micron-sized Al10CaMn2 particles formed instead of Al6(Mn,Fe). The rolling performance of the novel alloy was examined along two paths. Samples rolled without prior homogenization (path 1) exhibited better mechanical properties compared to those processed under SSHT (path 2). The resistance to recrystallization was also better for path 1. This enhancement was attributed to nanosized Al6(Mn,Fe) precipitates, absent in the samples after SSHT. Overall, both methods of rolling highlighted the benefits of calcium alloying, with a notable increase in grain size by 60%, leading to decreased strength by 30% in calcium-free alloys (YS was 135/143 MPa vs. 110 MPa).
期刊介绍：
Metals and Materials International publishes original papers and occasional critical reviews on all aspects of research and technology in materials engineering: physical metallurgy, materials science, and processing of metals and other materials. Emphasis is placed on those aspects of the science of materials that are concerned with the relationships among the processing, structure and properties (mechanical, chemical, electrical, electrochemical, magnetic and optical) of materials. Aspects of processing include the melting, casting, and fabrication with the thermodynamics, kinetics and modeling.
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