| 粉末冶金排气门座材料的研究 |
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| 引用本文： | 吴晓莉,张河,杨德统.粉末冶金排气门座材料的研究[J].内燃机学报,2002,20(2):161-164. |
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| 作者姓名： | 吴晓莉 张河 杨德统 |
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| 作者单位： | 南京理工大学,机械工程学院,江苏,南京,210094 |
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| 摘 要： | 研究了高合金粉末冶金钢的组织及合金元素含量对材料耐磨性的影响。开发了一种成分为 Fe-14 Cu- 6 Mo- 2 Cr- 0 .9W- 3Co- 1.5 C的高碳、高钼粉末冶金排气门座材料。试验结果表明 ,在常规的烧结温度下 ,这种采用元素粉混制的排气门座材料 ,只要经过熔渗铜处理 ,即可获得致密化程度较高、各合金元素分布较为均匀的组织 ,该组织为贝氏体与分散碳化物相的混合物 ;这种排气门座材料具有硬度高、耐磨等良好性能
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| 关 键 词： | 粉末冶金 排气门座 显微组织 力学性能 |
| 文章编号： | 1000-0909(2002)02-0161-04 |
| 修稿时间： | 2001年9月19日 |
Development of P/M Valve Seat Material |
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| WU Xiao li,ZHANG He,YANG De tong.Development of P/M Valve Seat Material[J].Transactions of Csice,2002,20(2):161-164. |
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| Authors: | WU Xiao li ZHANG He YANG De tong |
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| Abstract: | The microstructure of high alloy P/M steel and effect of alloy elements on wear resistance are investigated in this article.A sort of P/M exhaust valve seat material consists of Fe 14Cu 6Mo 2Cr 0.9W 3Co 1.5C has been developed.The results show that by mixing elemental powders and using conventional sintering equipment,only through copper infiltration the relatively dense and homogeneous microstructure can be obtained in the P/M exhaust valve seat material.This process provides mixture of bainite and carbide.Due to containing of suitable harden matrix,the sintered material shows moderate mechanical properties and good wear resistant property. |
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| Keywords: | P/M Exhaust valve seat Microstructure Mechanical property |
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