Three-Body Abrasive Wear Behavior of Iron Matrix Composite Reinforced with Cemented Carbide Particles

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Three-Body Abrasive Wear Behavior of Iron Matrix Composite Reinforced with Cemented Carbide Particles

更新时间：2025-07-09

- Three-Body Abrasive Wear Behavior of Iron Matrix Composite Reinforced with Cemented Carbide Particles
- Vol. 43, Issue 5, Pages: 56-60(2009)
- 作者机构：
  
  西安交通大学金属材料强度国家重点实验室,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： [TB331]
- Online First：10 May 2009，
  
  Published：2009
- 稿件说明：
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Three-Body Abrasive Wear Behavior of Iron Matrix Composite Reinforced with Cemented Carbide Particles[J]. 2009, 43(5): 56-60.
DOI：

Three-Body Abrasive Wear Behavior of Iron Matrix Composite Reinforced with Cemented Carbide Particles[J]. 2009, 43(5): 56-60. DOI：

摘要

以回收的钨钴钛类硬质合金为增强颗粒

采用负压铸渗工艺制备了颗粒增强高铬铸铁基复合材料

并借助于金相分析和X射线衍射等手段研究了复合材料的微观界面.由于铸渗过程中增强颗粒的部分熔解及W、C、Co和Fe等元素的扩散

在界面处产生了Fe

C、Co

C等化合物

形成了明显的过渡层

从而确保了增强颗粒与基体之间为冶金结合.利用三体磨料磨损试验机研究了复合材料的磨损性能

结果表明:磨损过程分为4个阶段

复合材料的体积磨损量随着磨损试验的进行先下降后上升

其中在第3阶段达到最低值; 复合材料的体积磨损量随着磨料粒度增大而逐渐增加.将制备的复合材料同工程中常用的热处理态高铬铸铁以及WC颗粒增强高铬铸铁基复合材料进行了耐磨性对比

发现其体积磨损量显著低于高铬铸铁

而与WC颗粒增强高铬铸铁基复合材料差别不大

显示出优异的性能价格比.

Abstract

The high-Cr white cast iron(WCI)matrix composite reinforced with recovered cemented carbide(CC)particles was prepared by the vacuum infiltration casting process. The interfacial structure between CC particle and the iron matrix was analyzed with optical microscope and X-ray diffraction(XRD). Owing to partial dissolution of the CC particles and diffusion of the elements such as W

Co and Fe

the compounds such as Fe

C and Co

C were formed in the interface

which ensured metallurgical bonding in the interface. The wear behavior of the fabricated composite was investigated on the three-body abrasive wear tester. The results show that the test included four stages

the worn volume of the composite decrease

d firstly until reached the minimum at the third stage

then increased

and the worn volume increased with the increase of abrasive particle size. Compared with the heat-treated high-Cr WCI and the WC/high-Cr WCI composite

the worn volume of the fabricated composite was much lower than the former

but did not significantly differ from the later.

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references

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