摘要
采用原位反应近液相线铸造法制备具有不同原位TiC颗粒含量的TiC/7075铝合金复合材料,在不同干摩擦条件下测试了复合材料磨损特性,研究TiC原位颗粒对材料的组织及磨损性能的影响。结果表明,原位TiC颗粒对7075基体铝合金的铸态组织具有细化和球化作用,随着TiC颗粒含量的增加,复合材料的铸态组织由蔷薇状组织逐渐转变为等轴晶组织。在转速和压力相同的条件下,复合材料的磨损量随TiC颗粒含量的增加而降低,增强相TiC的加入显著提高了材料的磨损性能。
The TiC/7075 aluminum composite materials possessing different in-situ TiC particles have been produced by in-situ reactive near-liquid phase-line casting technique.The wear resistance of the composite alloy has been analyzed under different friction conditions.The effect of in-situ TiC particles on microstructure and wear property have been investigated.The results show that the in-situ TiC particles can refine and globurize the casting micro-structure of 7075 aluminum base alloy.The casting rosette structure of the composite alloy turns to iso-axial crystal structure gradually with increasing of TiC particle content.The wear loss of the composite material decreases with increasing of TiC particle content under the same turning velocity and pressure.The reinforced phase of TiC particles in the alloy increases the wear resistance obviously.
出处
《轻合金加工技术》
CAS
北大核心
2011年第2期55-59,共5页
Light Alloy Fabrication Technology
基金
内蒙古自然科学基金项目(20080404zd17)
关键词
原位TiC颗粒
铝基复合材料
摩擦磨损
in-situ TiC particles
aluminum base composite material
wear loss of friction
作者简介
第一作者：许萍（1970-），女，讲师，主要从事金属基复合材料的制备、性能方面的研究。
