| 稀土镁对高硼铁基合金的影响 |
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| 引用本文： | 刘仲礼,李言祥,陈祥,胡开华.稀土镁对高硼铁基合金的影响[J].铸造,2007,56(4):400-404. |
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| 作者姓名： | 刘仲礼 李言祥 陈祥 胡开华 |
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| 作者单位： | 1. 清华大学机械工程系,先进成形制造教育部重点实验室,北京,100084
2. 浙东精密铸造有限公司,浙江宁波,315137 |
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| 摘 要： | 高硼铁基合金是一种新型的耐磨材料,其特点是以组织中硬脆的共晶硼化物作为材料的耐磨相。但是,由于共晶硼化物在晶界处呈网状分布,破坏了基体的连续性,导致材料韧性偏低。提高该种材料韧性的有效途径便是改善硼化物的形态,文中采用稀土镁对高硼铁基合金进行变质,在热处理条件下,改善了硼化物的形态,将材料的冲击韧度提高了34.6%。
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| 关 键 词： | 高硼铁基合金 硼化物 稀土镁 变质 |
| 文章编号： | 1001-4977(2007)04-0400-05 |
| 修稿时间： | 2006-08-24 |
Effect of RE-Mg on High Boron Iron-Base Alloy |
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| LIU Zhong-li,LI Yan-xiang,CHEN Xiang,HU Kai-hua.Effect of RE-Mg on High Boron Iron-Base Alloy[J].Foundry,2007,56(4):400-404. |
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| Authors: | LIU Zhong-li LI Yan-xiang CHEN Xiang HU Kai-hua |
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| Affiliation: | 1. Department of Mechanical Engineering, Tsinghua University, Key Laboratory for Advanced Materials Processing Technology, Ministry of Education, Beijing 100084, China; 2. Zhedong Precision Casting Co. Ltd., Ningbo 3151371 Zhejiang, China |
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| Abstract: | High boron iron-base alloy is a new kind of wear-resistant material,which takes high hardness and brittle eutectic borides as its wear-resistant phases.However,eutectic borides are distributed in the shape of net at grain boundary and result in a low ductility.Changing the morphology of borides is an effective way to increase ductility.In this paper RE-Mg is adopted as a modification agent,which may improve the morphology and as a result increase the ductility of 34.6% after heat treatment. |
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| Keywords: | high boron iron-base alloy borides RE-Mg modification |
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