| Al-5 Ti-1 B细化剂对7075铝合金组织与性能的影响 |
| |
| 引用本文： | 牛艳萍,张鸣,李沁,唐维学.Al-5 Ti-1 B细化剂对7075铝合金组织与性能的影响[J].有色金属加工,2014(6):18-21. |
| |
| 作者姓名： | 牛艳萍 张鸣 李沁 唐维学 |
| |
| 作者单位： | 广东省工业技术研究院 广州有色金属研究院,广东 广州,510650 |
| |
| 摘 要： | 研究了Al-5 Ti-1 B细化剂对7075铝合金组织与性能的影响。结果表明：添加微量的Al-5 Ti-1 B细化剂可使7075铝合金的铸态组织从粗大的枝晶细化为细小均匀的等轴晶，随着Al-5 Ti-1 B细化剂添加量的逐渐增加，7075铝合金的晶粒平均直径逐渐减小，抗拉强度和伸长率逐渐提高。当添加0．3％的Al-5Ti-1B细化剂时，7075铝合金被细化为平均直径44．7μm的等轴晶，抗拉强度和伸长率分别提高至311 MPa和4．1％，与未添加Al-5 Ti-1 B细化剂相比，7075铝合金的晶粒平均直径下降了64．3％，抗拉强度和伸长率分别提高了13．1％和45．4％。
|
| 关 键 词： | 7075 铝合金 Al-5 Ti-1 B细化剂 晶粒细化 |
Effect of Al-5 Ti-1 B Grain Refiner on Microstructure and Mechanical Properties of 7075 Aluminum Alloy |
| |
| NIU Yanping,ZHANG Ming,LI Qin,TANG Weixue.Effect of Al-5 Ti-1 B Grain Refiner on Microstructure and Mechanical Properties of 7075 Aluminum Alloy[J].Nonferrous Metals Processing,2014(6):18-21. |
| |
| Authors: | NIU Yanping ZHANG Ming LI Qin TANG Weixue |
| |
| Affiliation: | ( Analysis and Testing Center for Guangdong General Research Institute of Industrial Technology (Guangzhou Research Institute of Nonferrous Metals), Guangzhou 510650, China) |
| |
| Abstract: | The paper highIighted the effect of AI-5Ti-1B grain refiner on microstructure and mechanicaI properties of 7075 aI oy. The resuIts indicated that as-cast microstructure of 7075 aI oy with grain refiner transformed from coarse dendrites to fine equiaxed grains;average grain diameter was decreasing,tensiIe strength and eIongation were increasing aIong with the increase in the addition of grain refiner.When grain refiner addition was 0.3%,7075 aI oy was refined to equiaxed grains with an average diameter of 44.7 μm,tensiIe strength and eIongation increased to 311 MPa and 4.1%,respectiveIy;average grain diameter of 7075 aI oy decreased by 64.3%,tensiIe strength and eIongation increased by 13.1% and 45.4% compared with 7075 aI oy without grain refiner. |
| |
| Keywords: | 7075 aIuminum aI oy AI-5Ti-1B grain refiner grain refinement |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
