V-EPC制备铁基表面复合材料的表面质量和组织

李祖来; 蒋业华; 周荣; 欧阳习科

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V-EPC制备铁基表面复合材料的表面质量和组织
Surface Quality and Microstructure of Fe Matrix Surface Composites in Vacuum-Expendable Pattern Casting（V-EPC）
2005年第1期页码：21-23
纸质出版日期： 2005 ，
DOI：

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[1]李祖来,蒋业华,周荣,欧阳习科.V-EPC制备铁基表面复合材料的表面质量和组织[J].特种铸造及有色合金,2005(01):21-23+2.

Li ZulaiJiang Yehua Zhou Rong Ouyang Xike. Surface Quality and Microstructure of Fe Matrix Surface Composites in Vacuum-Expendable Pattern Casting（V-EPC）[J]. Special Casting & Nonferrous Alloys, 2005,(1):21-23.
[1]李祖来,蒋业华,周荣,欧阳习科.V-EPC制备铁基表面复合材料的表面质量和组织[J].特种铸造及有色合金,2005(01):21-23+2. DOI：

Li ZulaiJiang Yehua Zhou Rong Ouyang Xike. Surface Quality and Microstructure of Fe Matrix Surface Composites in Vacuum-Expendable Pattern Casting（V-EPC）[J]. Special Casting & Nonferrous Alloys, 2005,(1):21-23. DOI：

摘要

以HT3 0 0为基体

用WC颗粒作为增强颗粒

通过V EPC铸渗工艺制备出较为理想的铁基表面耐磨材料

铸件复合层厚度均匀

厚度为 6mm左右

WC在复合层中分布较为均匀 ;在复合过程中

主要是铁液向复合层渗透

铬向母材的渗透也有

但量很少

合金层和母材的结合良好

属于冶金结合

其硬度从复合层到基体先升高后降低

复合层平均硬度比HT3 0 0提高 3倍左右。

Abstract

Desirable WC particle reinforced HT300 matrix composites with the thickness of about 6 mm in compound layer were prepared by cast-infiltration in V-EPC

in which WC particles were distributed into the compound layer. Liquid Fe infiltrated into compound layer while a little Cr infiltrated into the matrix during cast-infiltration process. Alloying layer and the matrix belong to metallugirical bonding. The hardness of the composite decreases from the compound layer to matrix and the average hardness of the compound layer increases by about three times over that of the HT300 matrix materials.