Enhancing the Strength and Toughness of A356.2-0.15Fe Aluminum Alloy by Trace Mn and Mg Co-Addition
文献类型：期刊论文
| 作者 | Cui, Jie1,2; Chen, Jiayan1,3; Li, Yongbo2; Luo, Tianjiao1 |
| 刊名 | METALS
 |
| 出版日期 | 2023-08-01 |
| 卷号 | 13期号:8页码:12 |
| 关键词 | A356.2 alloy microalloying Mn Mg microstructure tensile properties |
| DOI | 10.3390/met13081451 |
| 通讯作者 | Luo, Tianjiao(tjluo@imr.ac.cn) |
| 英文摘要 | In the present work, microalloying is put forward to improve the microstructure and tensile properties of A356.2-0.15Fe (wt.%) alloy by the co-addition of trace Mn and Mg. A suitable Mn/Fe mass ratio of 0.5 is obtained for alloys with 0.15Fe. The yield strength, ultimate tensile strength, and elongation of the A356.2-0.15Fe alloy with an Mn/Fe ratio of 0.5 and containing 0.42 wt.% Mg is 179 MPa, 286 MPa, and 9.1%, respectively, which is acceptable for automotive wheel hub applications. Optical microscopy (OM), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), and electron-probe microanalyzer (EPMA) methods are used to characterize the microstructure of the alloys. The results indicate that Mn addition promotes the transformation of the acicular beta-Al5FeSi phase to the block-shaped alpha-Al(Fe, Mn)Si phase. The ratio of length/width of the Fe-rich phase in the alloy is reduced by 78.8% with an Mn/Fe ratio of 0.5 and containing 0.35 wt.% Mg, compared with that of the alloy without Mn addition and containing 0.35 wt.% Mg. The addition of Mg reduces the secondary dendrite arm spacing (SDAS) from 26.1 mu m to 20.9 mu m. The volume fraction of the precipitated Mg2Si phase in the alloy containing 0.42 wt.% Mg increases by 60% compared with that in the alloy containing 0.35 wt.% Mg. The morphology transformation of the Fe-rich phase, the reduction of SDAS, and the increase in volume fraction of precipitated Mg2Si phase comprehensively contribute to the improvement of A356.2-0.15Fe alloy. The microstructure evolution mechanism and the effect of microstructure on tensile properties are analyzed and discussed. |
| 资助项目 | Science and Technology Program of Dezhou[2022dzkj077] ; Scientific Research Allowance of Dezhou University[2022xjrc103] |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001056995700001 |
| 出版者 | MDPI |
| 资助机构 | Science and Technology Program of Dezhou ; Scientific Research Allowance of Dezhou University |
| 源URL | [http://ir.imr.ac.cn/handle/321006/179135]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Luo, Tianjiao |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Dezhou Univ, Sch Energy & Mech Engn, Dezhou 253023, Peoples R China 3.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cui, Jie,Chen, Jiayan,Li, Yongbo,et al. Enhancing the Strength and Toughness of A356.2-0.15Fe Aluminum Alloy by Trace Mn and Mg Co-Addition[J]. METALS,2023,13(8):12. |
| APA | Cui, Jie,Chen, Jiayan,Li, Yongbo,&Luo, Tianjiao.(2023).Enhancing the Strength and Toughness of A356.2-0.15Fe Aluminum Alloy by Trace Mn and Mg Co-Addition.METALS,13(8),12. |
| MLA | Cui, Jie,et al."Enhancing the Strength and Toughness of A356.2-0.15Fe Aluminum Alloy by Trace Mn and Mg Co-Addition".METALS 13.8(2023):12. |
入库方式： OAI收割
来源：金属研究所
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