为了优化自生TiC颗粒增强钢基表面复合材料的工艺参数,利用真空实型铸渗方法制备了自生TiC颗粒增强钢基表面复合材料,重点研究了自生TiC颗粒增强钢基表面复合材料的组织均匀性.结果表明,从基材和复合层间的界面到复合层表面,TiC颗粒尺寸逐渐增大,圆整度逐渐变差,其中Ti-C-20 wt%Fe体系复合层中TiC颗粒的尺寸增长量(由1 μm增长到2～3 μm)明显小于Ti-C体系(由1～2 μm增长到约10 μm).与Ti-C体系相比,Ti-C-20 wt%Fe体系制备得到的复合层中元素分布、硬度和TiC颗粒的体积分数较均匀,在复合层相同位置上TiC颗粒较小,圆整度较好.
In order to optimize the processing parameters of TiC/Fe composite materials, in-situ TiC particle reinforced steel-based composite coatings were prepared by vacuum evaporative pattern casting(V-EPC)infiltration process, and the structure homogeneity of the composite materials were investigated. The results show that the size of TiC particles increases and the spheroidization degree decreases from interface of composite layer and the steel substrate to surface of the composite layer.The size of TiC particles in the composite layer for Ti-C-20 vt% Fe system(1 μm to 2～3 μm)is smaller than that for the Ti-C system(from 1～2 μm to 10 μm).The distribution of Ti and Fe element, volume fraction of TiC particles and hardness are more homogeneous in the composite layer for Ti-C-20 wt% Fe system. Compared with Ti-C system,a finer size and higher degree of spheroidization of TiC particles in the composite layer can be obtained for TiC-20 wt% Fe system.
参考文献
| [1] | 王一三.反应铸造生成Fe-TiC梯度表面复合材料的研究[J].热加工工艺,1999(04):13. |
| [2] | 严有为,刘生发,范晓明,傅正义,魏伯康.工艺参数对SHS-铸造钢基表面TiC-Fe梯度复合涂层结构的影响[J].中国有色金属学报,2003(01):157-161. |
| [3] | Brown I W M;Owers W R .Fabrication,microstructure and properties of Fe-TiC ceramic-metal composites[J].Current Applied Physics,2004,4(2-4):171-174. |
| [4] | 刘建永,张元好,曾大新,何汉君,赖俊传.反应铸渗法制备Fe-WC表面复合材料的工艺研究[J].热加工工艺,2005(08):28-29,32. |
| [5] | 祝凯,金恒阁,宋宾,王长生,刘世坚.自蔓延高温合成结合铸造技术制备复合材料的研究[J].材料保护,2007(03):47-48. |
| [6] | 高峰,郭志猛.自蔓延离心法制备FeAl金属间化合物内衬复合钢管的研究[J].铸造,2008(04):326-329. |
| [7] | 纪朝辉,王志平,丁坤英.利用自蔓延高温合成工艺在铸钢表面制备TiC/Fe复合材料层[J].铸造,2007(08):834-836. |
| [8] | Feng Keqin,杨屹,沈保罗,林慧敏,何洪.电场作用下压坯密度对Fe-Ti-C体系低温燃烧合成的影响[J].稀有金属材料与工程,2005(03):479-482. |
| [9] | 李斌,许庆彦,李旭东,柳百成.Al-Si/SiCp复合材料微观组织模拟及颗粒分布均匀性定量预测[J].机械工程学报,2007(01):202-207,213. |
| [10] | 孙旭炜,曾苏民,陈志谦,程南璞,甘秉太.制备工艺对铝基复合材料增强体颗粒分布均匀性的影响[J].材料工程,2006(09):27-30,52. |
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