作　　者： (李灿）; (雷远）;

机构地区： 合肥工业大学材料科学与工程学院,安徽合肥230009

出　　处： 《材料研究与应用》 2017年第3期153-156,共4页

摘　　要： 采用铸锭冶金法制备了6082铝合金,并且研究了复合加入0.1%的Sc和0.1%的Zr元素对6082合金组织及性能的影响.结果表明:添加微量的Sc和Zr元素可显著细化铸态6082合金的组织,使粗大的枝晶网胞的尺寸减小,且晶粒细小、均匀;合金力学性能有很大程度的提高,铸态抗拉强度可达到213.14 MPa,与未添加Sc和Zr元素合金的强度相比提高了17%;合金的拉伸断口形貌也得到有效改善,韧窝数量增多,合金塑性明显提高. The 6082 aluminum alloys were prepared by ingot-metallurgy method. The effects of 0. 1% Sc and 0. 1% Zr （mass fraction） additions on microstructure, mechanical properties in 6082 alloy were investigated. The results show that by adding Sc and Zr in the cast alloy, the grains can be refined to a certain degree. The tensile test results show that additions of Sc and Zr resulted in increasing tensile strength,which can reach 213. 14 MPa, and compared with the alloy without Sc and Zr additions, the strength increases by 17% in the 6082-0.1Sc-0.1Zr alloy. Besides,the tensile fracture morphology of the alloy has been improved effectively and the plasticity has been improved obviously with increasing number of dimples.

关 键 词： 铝合金 晶粒细化 力学性能 断口形貌