【摘要】：通過調(diào)整WC顆粒尺寸(50μm和100μm)和質(zhì)量分數(shù)(25%、35%和45%),采用新型的復(fù)合電冶熔鑄工藝制備了4種WC顆粒增強鋼基復(fù)合材料,以及作為對比的5Cr Ni Mo鋼,對經(jīng)過不同熱處理的復(fù)合材料進行干滑動摩擦磨損試驗,研究了各試樣的摩擦因數(shù)和磨損量,并對磨損形貌進行分析。結(jié)果表明:隨著WC含量或顆粒度在一定范圍內(nèi)增大,摩擦因數(shù)呈提高的趨勢。在1000℃淬火+180℃回火,粗顆粒的WC含量為45%時,復(fù)合材料表現(xiàn)出最佳的耐磨性,是5Cr Ni Mo鋼的21.96倍,是粗顆粒含量25%和35%時的10.65倍和8.91倍,是細顆粒含量45%時的5.35倍。PRMMC在干滑動摩擦磨損條件下的磨損機制為磨粒磨損和氧化磨損。
[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，

本文編號：2246597