深冷处理对YG10硬质合金磨损性能的影响

以YG10硬质合金为研究对象,深冷处理技术为手段,采用正交试验的方法,在不同深冷温度、深冷时间、交变次数的情况下对其进行深冷处理,并对处理后的试样进行磨损试验、硬度试验和显微组织分析试验。结果表明,最优深冷处理工艺使YG10合金显微硬度提升33.6%,耐磨性提升72.8%,深冷温度是影响YG10合金耐磨性能最大的因素。究其原因,微观形貌上η相的弥散分布和粘结相Co相的致密变化提高了硬质合金的耐磨性能。

Effect of cryogenic treatment on wear property of YG10 cemented carbide

With YG10 cemented carbide as the research object and cryogenic treatment technology as the methods,the specimens were treated at different cryogenic temperature,cryogenic holding time and alternating times by orthogonal test,and the treated specimens were subjected to wear test,hardness test and microstructure analysis test.The results show that the microhardness is increased by 33.6%,the wear resistance is increased by 72.8%after the optimal cryogenic treatment,and the cryogenic temperature is the biggest factor affecting the wear resistance of YG10 cemented carbide.The reasons for this phenomenon are as follows:in terms of microstructure,the dispersive distribution ofηphase and the density change of Co phase enhance the wear resistance of cemented carbide.