| 等通道挤压对Al-Ti-B组织的影响 |
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| 引用本文： | 黄明宇,倪红军.等通道挤压对Al-Ti-B组织的影响[J].材料科学与工艺,2008,16(6):875-877. |
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| 作者姓名： | 黄明宇 倪红军 |
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| 作者单位： | 南通大学机械工程学院,江苏南通226007 |
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| 基金项目： | 江苏省高校自然科学基金，南通市科技局项目 |
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| 摘 要： | Al-Ti-B中间合金线材作为细化剂在铝加工业的应用越来越广泛,但国产该合金中的TiAl3呈粗大杆状和较小的团块状,最大颗粒尺寸达到100μm以上,而进口的该合金线材中TiAl3主要呈较小的杆状和团块状分布,颗粒尺寸为10～30μm,并且TiAl3的数量也较多.采用等通道挤压方法能改善Al-Ti-B中间合金的组织,研究结果表明,由于等通道挤压的作用,Al-Ti-B中间合金细化剂组织中杆状的、块状的TiAl3被挤压断,TiAl3和TiB2数量相对增加,颗粒尺寸减小,质量接近国外产品水平.
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| 关 键 词： | Al-Ti-B TiAl3 TiB2 等通道挤压 细化 |
Effects of equal channel angular processing on microstructure of Al-Ti-B alloys |
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| HUANG Ming-yu,NI Hong-jun.Effects of equal channel angular processing on microstructure of Al-Ti-B alloys[J].Materials Science and Technology,2008,16(6):875-877. |
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| Authors: | HUANG Ming-yu NI Hong-jun |
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| Affiliation: | (School of Mechanical Engineering Nantong University,Nantong 226007,China) |
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| Abstract: | To improve the quality of domestic-made Al-Ti-B alloys at grain size,grain distribution and quantity of TiAl3,we employed the method of equal channel angular processing(ECAP) to treat the alloys and investigated the effects of ECAP on the microstructure of Al-Ti-B alloys.Experimental results indicate that,by dint of ECAP,the bacillifiorm TiAl3 in those Al-Ti-B alloys are broken by extrusion;the quantity of TiAl3 and TiB2 is increased;and the grain size is reduced,Thus the quality of these treated alloys is approximate to exotic alloys. |
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| Keywords: | Al-Ti-B TiAl3 TiB2 |
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