摘要
采用粉末冶金真空烧结技术,在45钢表面原位反应制备了厚度为3～4 mm的(Ti,W)C∕Fe表面覆层材料,覆层中硬质相质量分数为35%。用扫描电镜和X射线衍射分析了覆层材料的微观组织结构及相组成,结果表明,覆层材料硬质相主要由(Ti,W)C、Fe3W3C和少量TiC颗粒组成,硬质相(Ti,W)C呈球形,在基体中均匀分布。能谱分析发现,覆层中合金元素向基体45钢中扩散均匀,实现了良好的冶金结合。磨损试验结果显示,表面覆层材料的耐磨性是高铬铸铁的5～6倍。
The （Ti,W）C/Fe cladding material on 45 steel surface was produced by in-situ synthesis and powder metallurgy route, the thickness of the cladding was 3-4 mm and the mass percent of the hard phase reached 35%. The microstructure of the cladding was analyzed by scanning electron microscope and X-ray diffraction. The results indicate that the hard phase of surface cladding is mainly （Ti,W）C, Fe3W3C and TiC; the round （Ti,W）C particles uniformly distribute in α-Fe. Analysis of the energy spectrum shows that the alloying elements uniformly diffuse in 45steel base, and the interface bonds very well.The abrasion experiment shows that the wear-resistance of the cladding material is 4- 5 times greater than that of high-chromium cast-iron.
出处
《热加工工艺》
CSCD
北大核心
2007年第15期50-53,共4页
Hot Working Technology
基金
科技部中小企业技术创新基金资助项目(01C2622511110095)
关键词
原位内生
表面覆层
颗粒增强
(TI
W)C
耐磨性
in-situ generation
surface cladding
particle reinforce
（Ti,W）C
wear-resistance
