Effect of load and reciprocating velocity on the transition from mild to severe wear behavior of Al–Si–SiCp composites in reciprocating conditions
Effect of load and reciprocating velocity on the transition from mild to severe wear behavior of Al–Si–SiCp composites in reciprocating conditions
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负载和往复速度对往复条件下 Al-Si-SiCp 复合材料从轻度磨损到重度磨损行为转变的影响
DOI：
10.1016/j.matdes.2010.05.010
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发表时间：
2010
影响因子：
8.4
通讯作者：
S. Jain
中科院分区：
文献类型：
--
作者：
V. R. Rajeev;D. K. Dwivedi;S. Jain
本文报道了正常载荷和往复速度对A319/15%SiCp、A336/15%SiCp和a390 /15% sicp复合材料由轻度磨损向重度磨损转变的影响。采用液态金属冶金工艺制备复合材料。采用自主研制的符合ASTM G133-05标准的往复摩擦磨损试验台，研究了干往复摩擦条件下复合材料的黏着磨损性能。正常载荷的增加增加了磨损率，并且根据往复速度和复合材料的类型，磨损模式从轻微的氧化磨损到严重的金属磨损变化。在al - si - sicp复合材料中，随着往复速度的增加和硅含量的降低，从轻度磨损到严重磨损的过渡载荷（通常称为过渡载荷）减小。在往复速度为1m/s时，A319/15%SiCp、a336 /15% sicp和a390 /15% sicp复合材料的过渡载荷分别为60-90N、60-105N和60-120N。对磨损表面和磨损碎片进行了扫描电镜（SEM）研究，分析了磨损方式和操作磨损机理。严重磨损的特征是大量塑性变形和材料的大面积去除，而轻度磨损的主要磨损机制是分层和划痕。提出了不同Al - (6-18)% si - 15% sicp复合材料在往复接触下的磨损机理图。
In the present paper, the effect of normal load and reciprocating velocity on transition from mild to severe wear of A319/15%SiCp, A336/15%SiCp, and A390/15%SiCpcomposites have been reported. Composites were produced through liquid metal metallurgy route. Adhesive wear behavior of composites was studied under dry reciprocating conditions using indigenously developed reciprocating friction wear test rig conforming to ASTM Standard G133-05. It was found that increase in normal load increases wear rate and depending upon the reciprocating velocity and type of composites, mode of wear changes from mild oxidative to severe metallic wear was noticed. The load corresponding to the transition from mild to severe wear usually termed as transition load was found to decrease with increase in reciprocating velocity and reduction in silicon content in the alloys used for the development of Al–Si–SiCpcomposites. At 1m/s reciprocating velocity, the transition load for A319/15%SiCp, A336/15%SiCpand A390/15%SiCpcomposites were found to be in the range of 60–90N, 60–105N and 60–120N respectively. Scanning electron microscope (SEM) study of wear surface and wear debris were conducted to analyze the mode of wear and operating wear mechanism. Severe wear was characterized by massive plastic deformation and gross material removal while the mild wear was found to be associated with delamination and scoring as main wear mechanisms responsible for material loss. Wear mechanism maps for different Al–(6–18)%Si–15%SiCpcomposites were proposed in reciprocating contacts.