电冶熔铸WC颗粒增强钢基复合材料的干滑动摩擦磨损性能
发布时间：2018-09-17 17:22
【摘要】：通过调整WC颗粒尺寸(50μm和100μm)和质量分数(25%、35%和45%),采用新型的复合电冶熔铸工艺制备了4种WC颗粒增强钢基复合材料,以及作为对比的5Cr Ni Mo钢,对经过不同热处理的复合材料进行干滑动摩擦磨损试验,研究了各试样的摩擦因数和磨损量,并对磨损形貌进行分析。结果表明:随着WC含量或颗粒度在一定范围内增大,摩擦因数呈提高的趋势。在1000℃淬火+180℃回火,粗颗粒的WC含量为45%时,复合材料表现出最佳的耐磨性,是5Cr Ni Mo钢的21.96倍,是粗颗粒含量25%和35%时的10.65倍和8.91倍,是细颗粒含量45%时的5.35倍。PRMMC在干滑动摩擦磨损条件下的磨损机制为磨粒磨损和氧化磨损。
[Abstract]:By adjusting WC particle size (50 渭 m and 100 渭 m) and mass fraction (25% and 45%), four kinds of WC particle reinforced steel matrix composites were prepared by a new composite electrometallurgical casting process, and 5Cr Ni Mo steel was used as a contrast. The dry sliding friction and wear tests of composites with different heat treatment were carried out. The friction coefficient and wear quantity of each sample were studied and the wear morphology was analyzed. The results show that the friction coefficient increases with the increase of WC content or particle size in a certain range. When quenched at 1000 鈩，
本文编号：2246597
[Abstract]:By adjusting WC particle size (50 渭 m and 100 渭 m) and mass fraction (25% and 45%), four kinds of WC particle reinforced steel matrix composites were prepared by a new composite electrometallurgical casting process, and 5Cr Ni Mo steel was used as a contrast. The dry sliding friction and wear tests of composites with different heat treatment were carried out. The friction coefficient and wear quantity of each sample were studied and the wear morphology was analyzed. The results show that the friction coefficient increases with the increase of WC content or particle size in a certain range. When quenched at 1000 鈩，
本文编号：2246597
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