Elucidation of rolling fatigue characteristic of particle dispersion composite using finite element method

研究了用火花等离子烧结法制备铝泥和铝合金粉复合材料的滚动磨损特性。采用滚动磨损试验和有限元法对复合材料的滚动磨损特性进行了研究。试验和有限元分析结果表明，相同材料组合的滚子滚动磨损耐久性得到提高，铝泥对材料内部裂纹扩展有抑制作用。另一方面，不同材料组合的滚子滚动磨损耐久性变差，复合材料的接触面较基体容易出现裂纹。因此，复合材料的轧制磨损特性随轧辊材料组合的不同而不同。

The rolling wear characteristic of a composite material fabricated from aluminum sludge and aluminum alloy powder by spark plasma sintering was investigated. The rolling wear characteristic of composite material was examined by a rolling wear test and finite element method. The experimental and finite element method results showed that the rolling wear durability of rollers of the same material combination improved, and aluminum sludge played a role in inhibiting crack propagation within the material. On the other hand, the rolling wear durability of rollers of a different material combination deteriorated, and cracks on the contact surface of the composite material tended to occur in comparison to matrix only. Therefore, the rolling wear characteristics of composite materials varied according to the roller material combination.