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Tribological studies of eutectic Aluminum-Silicon alloys used for automotive engine blocks subjected to sliding wear damage.

机译:用于汽车发动机缸体的共晶铝硅合金的摩擦学研究受到滑动磨损的损害。

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摘要

The microstructures and wear performances of linerless engine cylinder blocks made of two eutectic Al-Si alloys with different Si morphologies were characterized after the engine tests. Overall, both the Al-11 wt. % Si alloy and the Al-12.6 wt. % Si alloy provided similar wear performance.;Block-on-ring wear tests were applied to the Al-11% Si alloy. The MW regime in air consisted of two sub-regimes: MW-1 and MW-2. The argon atmosphere produced a 10-fold reduction in wear rates and the formation of LMW regime at loads less than 10 N. The metallic tribolayers formed in the MW under argon atmosphere were uniform and stable, resulting lower wear rates than those in air. The mechanism of material removal under argon atmosphere was delimination. The SW occurring in argon was observed at a relatively low load, compared to an air atmosphere. Wear was also more sensitive to applied load in the argon atmosphere.
机译:在发动机测试后,表征了由两种具有不同Si形态的低共熔Al-Si合金制成的无衬套发动机缸体的显微组织和磨损性能。总体而言,Al-11 wt。 %的Si合金和12.6重量%的Al。 %Si合金提供相似的磨损性能。;对Al-11%Si合金进行了环锁磨损测试。空气中的MW体制包括两个子体制:MW-1和MW-2。氩气气氛使磨损率降低了10倍,并且在小于10 N的载荷下形成了LMW机制。在氩气气氛下,MW中形成的金属摩擦层是均匀且稳定的,因此磨损率低于空气中。氩气气氛下物料的去除机理为脱除。与空气气氛相比,在相对较低的负荷下观察到在氩气中发生的SW。磨损对氩气环境中的负载也更加敏感。

著录项

  • 作者

    Xue, Guijun.;

  • 作者单位

    University of Windsor (Canada).;

  • 授予单位 University of Windsor (Canada).;
  • 学科 Applied Mechanics.;Engineering Materials Science.;Engineering Automotive.
  • 学位 M.Appl.Sc.
  • 年度 2009
  • 页码 168 p.
  • 总页数 168
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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