Wear Behaviour of Nanocrystalline Fe88Si12Alloy in Water Environment

[摘要] Wear behaviour of nanocrystalline Fe88Si12alloy has been investigated in water environment compared with the coarse grained counterpart. The friction coefficient of the Fe88Si12alloy changes slightly with the grain size. The wear resistance is enhanced as the grain size decreases first and then reduces when the grain size continues to decrease, although the hardness of the Fe88Si12alloy decreases monotonically with the grain size. It is contrary to the predications of Archard’s formula. The best wear resistance of Fe88Si12alloy with grain size of 40 nm in our present work is attributed to the proper grain boundary volume fraction and composite phase structures of disordered B2 and ordered D03.

[学科分类] 材料工程