The effect of fibre orientation of the dry sliding wear of borsic-reinforced 2014 aluminium alloy
The effect of fibre orientation of the dry sliding wear of borsic-reinforced 2014 aluminium alloy
复制标题
DOI：
10.1007/bf01159309
复制
发表时间：
1996-10
影响因子：
4.5
通讯作者：
Y. Şahin;S. Murphy
中科院分区：
文献类型：
--
作者：
Y. Şahin;S. Murphy
采用销盘式磨损试验机研究了纤维取向对连续B(SiC)纤维增强铝合金复合材料干滑动磨损的影响。在 12 至 60 N 的载荷下，对金属基复合材料 (MMC) 样品以正向 (N)、平行 (P) 和反平行 (AP) 方向以 1 m s−1 的固定速度在钢计数器盘上滑动进行测试。结果表明，对于基体合金和 MMC，平均磨损随载荷线性增加。 MMC 的磨损对纤维含量不敏感，但对于这项工作中使用的纤维含量等于或高于最低 16 vol% 的复合材料，磨损率约为未增强基体的 18%。纤维取向对磨损率影响较小； N取向的磨损率最低，AP取向稍高，P取向明显更高。N和AP取向的MMC的平均摩擦系数随着磨损率的增加而线性下降，随着载荷的增加而非线性下降，但P取向对任一变量都不敏感。从这些结果和金相检查得出结论，MMC的磨损机制本质上是基体的氧化磨损。硬纤维根据其相对于磨损表面的方向和滑动方向对此进行稍微不同程度的修改。
The effect of fibre orientation on the dry sliding wear of continuous B(SiC) fibre reinforced aluminium alloy composites was investigated using a pin-on-disc wear testing machine. The metal-matrix composites (MMC) samples were tested in the normal (N), parallel (P) and antiparallel (AP) orientations sliding against a steel counter disc at a fixed speed of 1 m s−1under loads of from 12 to 60 N.The results showed that for the matrix alloy and MMCs, the average wear increased linearly with load. Wear of the MMCs was insensitive to fibre content but for composites with fibre contents at or above the minimum of 16 vol% used for this work, the wear rate was about 18% of that of the unreinforced matrix. Fibre orientation had a minor effect on wear rate; the N orientation gave the lowest wear rate with the AP orientation slightly higher and the P orientation significantly higher.The average coefficients of friction of the MMCs in N and AP orientations decreased linearly with increased wear rate and non-linearly with increased load, but the P orientation was insensitive to either variable.It was concluded from these results and a metallographic examination that the mechanism of wear of MMCs was essentially oxidative wear of the matrix. The hard fibres modified this to slightly different degrees depending on their orientation relative to the wear surface and sliding direction.