期刊文献+

相对厚度对TiB_2颗粒增强45钢基表面复合材料组织和硬度的影响 被引量:2

Effect of Relative Thickness on Microstructures and Hardness of TiB_2 Particles Reinforced 45 Steel Matrix Surface Composites
下载PDF
导出
摘要 介绍了采用SHS和V-EPC真空消失模铸造相结合制备二硼化钛颗粒增强钢基表面复合材料的组织和硬度特点,重点研究了相对厚度的影响。利用扫描电镜、电子探针和光学显微镜等观察和分析了复合层的显微组织,并测试了显微硬度。结果表明,随着相对厚度δ的增加,复合材料的组织致密性得到改善,宏观缺陷减少,在相对厚度δ=9时复合材料质量最佳。复合层的组织主要由硬质相TiB2、TiC和基体组成,细小弥散的TiB2和TiC颗粒交替地分布在基体上,组织中呈方形的TiB2颗粒在数量上远远多于呈多边形的TiC颗粒;复合层的硬度随着距合金层表面深度的增加而降低,硬度最大值为1 449 HV。 This paper introduced TiB2 particles reinforced 45 steel matrix surface composites fabricated by self-propagating high-temperature synthesis(SHS) combined with V-EPC foundry technology.The feature of micro structure and hardness of the composite is present.The effect of relative thickness(δ) on the microstructures of the surface composite layer was investigated,and the microscopic structure was observed and analyzed by scanning electron microscopy,electron probe and optical microscope.Then the surface hardness of the composite was tested.The results show that with the increase of relative thickness(δ),quality of the surface composite was improved and macro-defect reduced obviously.When the δ equaled 9,the best quality is obtained.The microstructure of the composite has three different layers,composite layer,transition layer and the matrix layer.The structure of composite layer is mainly consisted of carbide and matrix.Dispersed TiB2 and TiC are alternating distributed on the matrix layer.But the quantity of rectangular TiB2 is more than polygonal TiC.The matrix is formed of pearlite and ferrite.There is very fine pearlite,granular pearlite,ferrite and carbide in the transition layer.Micro-hardness in the composites layer is decreasing with the increase of distance from surface layer of alloy,1 449 HV is its peak.
出处 《铸造技术》 CAS 北大核心 2011年第1期55-58,共4页 Foundry Technology
关键词 SHS V-EPC TIB2颗粒 相对厚度 复合材料 SHS V-EPC TiB2 particle Relative thickness Composites
  • 相关文献

参考文献6

  • 1向军辉,肖汉宁.TiB_2材料的研究现状及其应用[J].陶瓷工程,1996,30(4):40-44. 被引量:35
  • 2Itoh H, Matsudaira T, Naka s. Reaction control of TiB2 formation from titanium metal and amorphous boron[J]. mater Sci. 1989,24: 40-53.
  • 3Hoke D A, Meyers M A. Consolidation of combustion- synthesis titanium diboride material[J].A m Soc,1995, 78(2) :275-284.
  • 4Goria C A, Caironi G. Coating permeability: a critical parameter of eraporative pattern process [J]. AFS Transactions, 1986,101 : 589-596.
  • 5Gaudio G D. Aspects concerning of the coating in the production of iron castings by "poly cast" process[J]. Metal lurgical Science and Technology, 1985,3(3) :76-87.
  • 6Y Wang, Z Q Zhang, H Wang, et al. Jiang. Effect of Fe content in Fe-Ti-B system on fabricating TiB2 particulate locally reinforced steel matrix composites[J]. Materials Science and Engineering A. 2006,422:339-345.

二级参考文献1

共引文献34

同被引文献16

引证文献2

二级引证文献8

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部