| K/Na-RE复合变质对辊环用高速钢组织及力学性能的影响 |
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| 引用本文： | 潘福贞,杨华,焦金玲,魏代斌. K/Na-RE复合变质对辊环用高速钢组织及力学性能的影响[J]. 铸造, 2006, 55(2): 164-168 |
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| 作者姓名： | 潘福贞 杨华 焦金玲 魏代斌 |
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| 作者单位： | 山东大学材料液态结构及其遗传性教育部重点实验室,山东,济南,250061 |
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| 摘 要： | 在辊环用高速钢中添加不同含量的K／Na-RE复合变质剂，对试样分别进行HSVM及力学性能测试。结果表明，随着复合变质剂含量的增加，并进行适当的热处理，高速钢中铸态碳化物趋于断网，奥氏体晶粒急剧变小，由大的枝晶变为小的等轴晶，分布趋于均匀，且高速钢的强度和韧性明显提高。当复合变质剂的加入量为1．0％时，高速钢的组织及力学性能较好。
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| 关 键 词： | K/Na-RE复合变质 高速钢 辊环 力学性能 |
| 文章编号： | 1001-4977(2006)02-0164-05 |
| 收稿时间： | 2005-09-30 |
| 修稿时间： | 2005-10-24 |
Effect of K/Na-RE Multiple Modification on Structure and Mechanical Property of High-speed Steel Used for Roll Collar |
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| PAN Fu-zhen,YANG Hua,JIAO Jin-ling,WEI Dai-bin. Effect of K/Na-RE Multiple Modification on Structure and Mechanical Property of High-speed Steel Used for Roll Collar[J]. Foundry, 2006, 55(2): 164-168 |
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| Authors: | PAN Fu-zhen YANG Hua JIAO Jin-ling WEI Dai-bin |
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| Affiliation: | Key Laboratory of Liquid Structure and Heredity of Materials, Ministry of Education, Shandong University, Ji, nan 250061, Shandong, China |
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| Abstract: | The effect of different amounts of K/Na-RE addition into high-speed steel(HSS) used for roll collar was investigated utilizing Hi-scope video microscope(HSVM) and mechanical property measurement.The results show that,with the increase of K/Na-RE addition and proper heat treatment the carbides and crystal grains of HSS are distributed homogeneously in the microstructure.After multiple modification,as-cast carbide networks tend to break up,and austenitic crystal grains have great change that the big dendritic crystals turn into small equiaxed crystals.Further analysis shows that,strength and toughness of HSS have evident improvement.And the high speed steel has better morphology and mechanical property with 1.0wt.% modifier. |
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| Keywords: | K/Na-RE multiple modification high-speed steel roll collar mechanical property |
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