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| 改善Al-Mg合金流动性及力学性能的新方法 |
| A Novel Method for Improving the Fluidity and Mechanical Properties of Al-Mg Alloy |
| Received:December 18, 2018 Revised:January 10, 2019 |
| DOI：10.3969/j.issn.1674-6457.2019.01.007 |
| 中文关键词: Al-Ti-C-B晶种合金 Al-Mg合金 晶粒细化 流动性 力学性能 |
| 英文关键词: Al-Ti-C-B crystal-seed alloy Al-Mg alloy grain refinement fluidity mechanical properties |
| 基金项目:国家自然科学基金重点项目（51731007） |
| Author Name | Affiliation | | TIAN Shuai | 1. Key Laboratory for Liquid-Solid Structural Evolution & Processing of Materials, Ministry of Education, Shandong University, Jinan 250061, China | | LIU Gui-liang | 2. Shandong Al & Mg Melt Tech. Co., Ltd., Jinan 250061, China | | HAN Meng-xia | 1. Key Laboratory for Liquid-Solid Structural Evolution & Processing of Materials, Ministry of Education, Shandong University, Jinan 250061, China | | LIU Xiang-fa | 1. Key Laboratory for Liquid-Solid Structural Evolution & Processing of Materials, Ministry of Education, Shandong University, Jinan 250061, China |
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| 中文摘要: |
| 目的 改善Al-Mg合金的流动性和组织性能。方法 向Al-Mg合金中加入含有掺杂型TiCx的Al-Ti-C-B晶种合金（简称Al-Ti-C-B），借助其对Al-Mg合金枝晶大小及形貌调控，研究其对Al-Mg合金流动性和组织性能的影响，并与传统的Al-Ti-B中间合金细化剂进行对比。结果 加入Al-Ti-C-B后Al-Mg合金的流动性和力学性能均高于Al-Ti-B，螺旋流动性试样长度由692 mm提高到937 mm，提高了约35.4%；Al-Mg合金的拉伸强度分别由192 MPa提高至216 MPa，伸长率由2.1%提高至4.1%，分别提高了12.5%和95.2%。结论 借助Al-Ti-C-B及其晶种技术能够实现对Al-Mg合金流动性和力学性能的同步提升。 |
| 英文摘要: |
| The paper aims to improve fluidity and mechanical properties of Al-Mg alloy. Al-Ti-C-B crystal-seed alloy (named Al-Ti-C-B) containing doping type TiCx was added to Al-Mg alloy to research its influences on fluidity and mechanical properties of Al-Mg alloy. Compared with the conventional Al-Ti-B intermediate alloy refiner, the fluidity and mechanical properties of Al-Mg alloy were higher than those of Al-Ti-B, with the average length of the spiral fluidity sample increased from 692 mm to 937 mm, which increased by 35.4%. The tensile strength increased from 192 MPa to 216 MPa and the elongation increased from 2.1% to 4.1%, which increased by 12.5% and 95.2% individually. Al-Ti-C-B and its crystal-seed technology could improve fluidity and mechanical properties of Al-Mg alloy simultaneously. |
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