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T6態(tài)Al-10Si-5Cu-0.75Mg合金干滑動(dòng)摩擦磨損性能的研究
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江蘇大學(xué) 材料科學(xué)與工程學(xué)院

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江蘇省博士后科研資助計(jì)劃項(xiàng)目 (1601055C),江蘇省科技型企業(yè)技術(shù)創(chuàng)新資金項(xiàng)目(BC2012211),江蘇大學(xué)高級(jí)人才科研啟動(dòng)(14JDG126)


Research on Dry Sliding Friction and Wear Characteristics of T6 Treated Al-10Si-5Cu-0.75Mg Alloy
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School of Materials Science and Engineering,Jiangsu University

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    摘要:

    利用UMT-2 型摩擦磨損試驗(yàn)機(jī)研究了T6態(tài)Al-10Si-5Cu-0.75Mg 合金的干滑動(dòng)摩擦磨損性能,采取SEM、XRD、EDS等方法分析了合金在不同轉(zhuǎn)速和載荷下的摩擦磨損行為。結(jié)果表明：合金的磨損率隨轉(zhuǎn)速和載荷的增加而增大,但在800 r/min的高轉(zhuǎn)速下仍具有良好的耐磨性,15N高載荷時(shí)的磨損率相對(duì)于5N低載荷時(shí)只增加了291%,屬于輕微磨損；摩擦系數(shù)的平均值在0.35-0.40范圍內(nèi)變化,且隨時(shí)間的變化不大,具有較高的穩(wěn)定性；另外,磨損機(jī)制由低速輕載時(shí)的磨粒磨損、粘著磨損向高速重載時(shí)的剝層磨損、氧化磨損轉(zhuǎn)變。

    Abstract:

    The dry sliding friction wear test of T6 treated Al-10Si-5Cu-0.75Mg alloy was performed with UMT-2 tribometer. The wear mechanisms of the alloy under different load and revolving speed were analyzed by means of SEM, XRD and EDS. The results reveal that the wear rate of Al-10Si-5Cu-0.75Mg alloy is increased with the increase of revolving speed and applied load. but under 800 r/min high revolving speed, Al-10Si-5Cu-0.75Mg alloy still has a good wear resistance. The wear rate of the Al-10Si-5Cu-0.75Mg alloy under 15N applied load is only increase by 291% compared with 5N applied load, this belongs to mild wear. The average friction coefficient changes within the range from 0.35 to 0.40, and the change is small over time, which indicates a strong stability. Meanwhile, as the applied load increases, the wear mechanism is changed from the abrasive wear and the adhesive wear of low applied speed to the delamination wear and the oxidative wear of high applied speed. Keywords: Al-10Si-5Cu-0.75Mg alloy; wear rate; friction coefficient; wear mechanism

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劉光磊,李玉山,李超,趙國(guó)師,司乃潮. T6態(tài)Al-10Si-5Cu-0.75Mg合金干滑動(dòng)摩擦磨損性能的研究[J].稀有金屬材料與工程,2019,48(2):620~625.[Liu Guanglei, Li Yushan, Li Chao, Zhao Guoshi, Si Naichao. Research on Dry Sliding Friction and Wear Characteristics of T6 Treated Al-10Si-5Cu-0.75Mg Alloy[J]. Rare Metal Materials and Engineering,2019,48(2):620~625.]
DOI：10.12442/j. issn.1002-185X.20170509

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  • 收稿日期:2017-06-12
  • 最后修改日期:2017-08-30
  • 錄用日期:2017-09-12
  • 在線發(fā)布日期: 2019-03-15
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