加入Al-5Ti-B细化剂和Al-2Zr-Sc中间合金后铝锌镁合金的组织和拉伸性能
Microstructures and Mechanical Properties of Al-Zn-Mg Alloy after Adding Al-5Ti-B Refiner and Al-2Zr-Sc Intermediate Alloy
摘 要
在单独或复合添加Al-2Zr-Sc中间合金和Al-5Ti-B细化剂的条件下对铝锌镁合金进行细化处理，研究了不同细化条件下铸态铝镁锌合金的显微组织和力学性能。结果表明：单独加入质量分数为0.4%的Al-2Zr-Sc中间合金或Al-5Ti-B细化剂都可以细化铝镁锌合金的晶粒，且加入Al-2Zr-Sc中间合金后有Al3（Sc，Zr）相析出，提高了合金的抗拉强度；复合添加质量分数均为0.2%的Al-2Zr-Sc中间合金和Al-5Ti-B细化剂后，晶粒的细化效果最优，相比于基体合金，平均晶粒尺寸减小了20 μm，抗拉强度提高了32%，这主要是细晶强化和析出强化共同作用的结果；晶界处长杆状第二相的存在导致复合细化合金的伸长率比单独细化合金的低。
稀土钪
细化剂
力学性能
Al-Zn-Mg alloy
rare earth Sc
refiner
mechanical property
Abstract
Al-Zn-Mg alloy was refined with the single or compound addition of Al-2Zr-Sc intermediate alloy and Al-5Ti-B refiner. The microstructures and mechanical properties of as-cast Mg-Al-Zn alloys prepared under different refining conditions were studied. The results show that the grains were refined by single adding 0.4wt% Al-5Ti-B refiner or 0.4wt% Al-2Zr-Sc intermediate alloy, and the tensile strength was improved by Al3(Sc,Zr) phases after the addition of 0.4wt% Al-2Zr-Sc intermediate alloy. The refining effects of grains was best after compound addition of 0.2wt% Al-5Ti-B and 0.2wt% Al-2Zr-Sc, compared with the alloy before adding, the average grain size of the alloy after compound addition was reduced by 20 μm, and tensile strength was increased by 32%, which was result of grain strengthening and dispersion strengthening. The second phase with long rod shape caused the elongation of the alloy after compound refining was lower than that of the alloy after single refining.
中图分类号 TG146.2 DOI 10.11973/jxgccl201701008
所属栏目 试验研究
基金项目 国家高技术研究发展计划（“863”计划）项目（2013AA031002）
收稿日期 2015/12/1
修改稿日期 2016/12/10
网络出版日期
作者单位点击查看
备注丁俭(1977-),女,河北石家庄人,副教授,博士。
引用该论文: DING Jian,DU Xi-wang,JIN Zi-hui,XIA Xing-chuan,ZHAO Nai-qin,ZHAO Wei-min,LIU Li-hua. Microstructures and Mechanical Properties of Al-Zn-Mg Alloy after Adding Al-5Ti-B Refiner and Al-2Zr-Sc Intermediate Alloy[J]. Materials for mechancial engineering, 2017, 41(1): 38～42
丁俭,杜喜望,靳子惠,夏兴川,赵乃勤,赵维民,刘利华. 加入Al-5Ti-B细化剂和Al-2Zr-Sc中间合金后铝锌镁合金的组织和拉伸性能[J]. 机械工程材料, 2017, 41(1): 38～42
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参考文献
【1】王少华, 马志锋, 刘惠, 等. 铝锌镁铜锆钪合金型材的组织和性能[J]. 机械工程材料, 2014, 38(6):60-65.
【2】陈小番, 王义仁. Al-Ti-B晶粒细化剂的研究进展[J]. 南方金属, 2010(5):5-8.
【3】兰晔峰,郭朋,张继军.稀土对Al-Ti-B-RE中间合金细化性能的影响[J]. 铸造技术, 2006, 26(9):774-775.
【4】张胜华,张涵,朱云.稀土在Al-Ti-B-RE中间合金中的作用[J]. 中南大学学报(自然科学版), 2005, 36(3):386-389.
【5】杜传慧, 苑飞, 王祝堂. Al-Sc合金[J]. 轻合金加工技术, 2013(8):11-21.
【6】SHI Y, PAN Q, LI M,et al. Effect of Sc and Zr additions on corrosion behaviour of Al-Zn-Mg-Cu alloys[J]. Journal of Alloys and Compounds, 2014, 612:42-50.
【7】ZOU L, PAN Q L, HE Y,et al. Effect of minor Sc and Zr addition on microstructures and mechanical properties of Al-Zn-Mg-Cu alloys[J]. Transactions of Nonferrous Metals Society of China, 2007, 17(2):340-345.
【8】HE Y D, ZHANG X M, YOU J H. Effect of minor Sc and Zr on microstructure and mechanical properties of Al-Zn-Mg-Cu alloy[J]. Transactions of Nonferrous Metals Society of China, 2006,16(5):1228-1235.
【9】LI B, PAN Q, HUANG X, et al. Microstructures and properties of Al-Zn-Mg-Mn alloy with trace amounts of Sc and Zr[J]. Materials Science and Engineering A, 2014, 616:219-228.
【10】肖静, 尹志民, 黄继武, 等. 微量钪对Al-Zn-Mg-Zr合金组织与性能的影响[J]. 中南大学学报(自然科学版), 2008, 39(5):975-979.
【11】LI G, ZHAO N, LIU T,et al. Effect of Sc/Zr ratio on the microstructure and mechanical properties of new type of Al-Zn-Mg-Sc-Zr alloys[J]. Materials Science and Engineering A, 2014, 617:219-227.
【2】陈小番, 王义仁. Al-Ti-B晶粒细化剂的研究进展[J]. 南方金属, 2010(5):5-8.
【3】兰晔峰,郭朋,张继军.稀土对Al-Ti-B-RE中间合金细化性能的影响[J]. 铸造技术, 2006, 26(9):774-775.
【4】张胜华,张涵,朱云.稀土在Al-Ti-B-RE中间合金中的作用[J]. 中南大学学报(自然科学版), 2005, 36(3):386-389.
【5】杜传慧, 苑飞, 王祝堂. Al-Sc合金[J]. 轻合金加工技术, 2013(8):11-21.
【6】SHI Y, PAN Q, LI M,et al. Effect of Sc and Zr additions on corrosion behaviour of Al-Zn-Mg-Cu alloys[J]. Journal of Alloys and Compounds, 2014, 612:42-50.
【7】ZOU L, PAN Q L, HE Y,et al. Effect of minor Sc and Zr addition on microstructures and mechanical properties of Al-Zn-Mg-Cu alloys[J]. Transactions of Nonferrous Metals Society of China, 2007, 17(2):340-345.
【8】HE Y D, ZHANG X M, YOU J H. Effect of minor Sc and Zr on microstructure and mechanical properties of Al-Zn-Mg-Cu alloy[J]. Transactions of Nonferrous Metals Society of China, 2006,16(5):1228-1235.
【9】LI B, PAN Q, HUANG X, et al. Microstructures and properties of Al-Zn-Mg-Mn alloy with trace amounts of Sc and Zr[J]. Materials Science and Engineering A, 2014, 616:219-228.
【10】肖静, 尹志民, 黄继武, 等. 微量钪对Al-Zn-Mg-Zr合金组织与性能的影响[J]. 中南大学学报(自然科学版), 2008, 39(5):975-979.
【11】LI G, ZHAO N, LIU T,et al. Effect of Sc/Zr ratio on the microstructure and mechanical properties of new type of Al-Zn-Mg-Sc-Zr alloys[J]. Materials Science and Engineering A, 2014, 617:219-227.
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