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| 铸造铝合金半连续铸棒组织与性能均匀性研究 |
| Mechanical and Microstructural Homogeneity of Semi-continuous Casting Aluminum Alloy Bars |
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| DOI：10.3969/j.issn.1674-6457.2022.08.022 |
| 中文关键词: ZL114A ZL205A 半连续铸造 微观组织 力学性能 |
| 英文关键词: ZL114A ZL205A semi-continuous casting microstructure properties |
| 基金项目:国家自然科学基金面上项目(51971099) |
| Author Name | Affiliation | | TAO Jian-quan | Southwest Technologyand Engineering Research Institute, Chongqing 400039, China | | WANG Xiu-tao | Shandong Machinery Design and Research Institute, Jinan 250000, China | | CHEN Xi-dong | Southwest Technologyand Engineering Research Institute, Chongqing 400039, China | | SUN Ji-peng | Southwest Technologyand Engineering Research Institute, Chongqing 400039, China | | WANG Mao-chuan | Southwest Technologyand Engineering Research Institute, Chongqing 400039, China | | WANG Yan-bin | Southwest Technologyand Engineering Research Institute, Chongqing 400039, China | | XIANG Lin | Southwest Technologyand Engineering Research Institute, Chongqing 400039, China |
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| 中文摘要: |
| 目的 研究ZL114A合金和ZL205A合金半连续铸棒不同部位的力学性能与微观组织，分析铝合金半连续铸棒的均匀性。方法 分别对半连续铸棒的中心位置、R/2位置、边缘R位置进行取样，对比分析各部位的力学性能及微观组织。结果 ZL114A合金的抗拉强度为338~355 MPa，断后伸长率为9%~11.5%;ZL205A合金的抗拉强度为465~485 MPa，断后伸长率为12%~15%。与铸棒中心位置相比，铸棒边缘R位置的晶粒尺寸更小，性能也更优异，但ZL114A合金铸棒的边缘R位置存在夹渣缺陷，导致其力学性能低于铸棒中心位置的力学性能。结论 采用半连续铸造工艺制备的ZL114A合金和ZL205A合金均具有细小、均匀的微观组织，且组织越细小的部位，力学性能越高，存在凝固缺陷的部位，力学性能较低。 |
| 英文摘要: |
| The work aims to study the mechanical properties and microstructure of semi-continuous casting ZL114A and ZL205A bars at different sites and analyze the homogeneity of semi-continuous casting bars. The center, R/2 site and edge R of semi-continuous casting bars were sampled respectively, and the mechanical properties and microstructure of each site were compared and analyzed. The tensile strength and elongation of ZL114A alloy were about 338-355 MPa and 9%-11.5% respectively, and those of ZL205A alloy were about 465-485 MPa and 12%-15% respectively. Compared with the center, grain size in R site of bars was smaller and the corresponding properties were better. However, slags were founded in R site of ZL114A bar, which caused the mechanical properties lower than that at the center. The ZL114A alloy and ZL205A alloy prepared by semi-continuous casting process have fine and uniform microstructure. The site with finer microstructure has higher mechanical properties, while the site with solidification defects has lower mechanical properties. |
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