| TiN/Ti复合细化剂对工业纯铝细化效果的影响 |
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| 引用本文： | 谌援,李欣蔚,罗强,蒋文海,蔡启舟.TiN/Ti复合细化剂对工业纯铝细化效果的影响[J].特种铸造及有色合金,2011,31(8). |
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| 作者姓名： | 谌援 李欣蔚 罗强 蒋文海 蔡启舟 |
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| 作者单位： | 华中科技大学材料成形与模具技术国家重点实验室 |
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| 摘 要： | 利用高能球磨制备了一种金属钛包覆纳米TiN的复合晶粒细化剂(TiN/Ti),研究了该细化剂对工业纯铝的细化效果及其抗衰退性能.结果表明,TiN/Ti复合细化剂对工业纯铝具有良好的晶粒细化效果,当加入量仅为0.025％时,试样组织由粗大的柱状晶转变为等轴晶;当加入量为0.2％时,纯铝的晶粒平均尺寸为82μm.该细化剂在725℃铝液中保温30、60和120 min后,试样的晶粒尺寸分别为101、153和327 μm.相对纯钛粉,TiN/Ti细化剂表现出良好的抗衰退性能,其抗衰退性来源于金属钛包覆纳米TiN在铝液中的分散性和稳定性.
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| 关 键 词： | TiN/Ti复合细化剂 纳米TiN 工业纯铝 晶粒尺寸 抗衰退性 |
Influence of New-type TiN/Ti Grain Refiner on the Grain Refining Effects in Commercial Pure Aluminum |
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| Chen Yuan,Li Xinwei,Luo Qiang,Jiang Wenhai,Cai Qizhou.Influence of New-type TiN/Ti Grain Refiner on the Grain Refining Effects in Commercial Pure Aluminum[J].Special Casting & Nonferrous Alloys,2011,31(8). |
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| Authors: | Chen Yuan Li Xinwei Luo Qiang Jiang Wenhai Cai Qizhou |
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| Affiliation: | Chen Yuan,Li Xinwei,Luo Qiang,Jiang Wenhai,Cai Qizhou(State Key Laboratory of Material Processing and Die & Mould Technology,Huazhong University of Science and Technology) |
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| Abstract: | A new type of Ti cladding nano-sized TiN(TiN/Ti)composite grain refiner was prepared by high energy ball milling,and effects of the prepared grain refiner on refining effects and anti-fading behavior of commercial pure Al were investigated.The results show that TiN/Ti composite refiner exhibits the excellent grain refining effects on commercial pure aluminum.With 0.025% addition,microstructure of the samples is transformed from coarse columnar grain into equiaxed one,and with 0.2% addition,average grain siz... |
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| Keywords: | TiN/Ti Composite Grain Refiner Nano-sized TiN Commercial Pure Aluminum Grain Size Anti-fading Behavior |
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