Abrasive wear response of nanocrystalline Ni-W alloys across the Hall-Petch breakdown

TitleAbrasive wear response of nanocrystalline Ni-W alloys across the Hall-Petch breakdown
Publication TypeJournal Article
Year of Publication2013
AuthorsRupert, TJ, Cai, W, Schuh, CA
JournalWear
Volume298
Pagination120 - 126
Date Published2013/02/15/
Abstract

The abrasive wear of nanocrystalline Ni-W alloys with grain sizes of 5-105 nm has been studied using Taber abrasion testing. The wear resistance of the finest grain size specimen is found to be higher than would be predicted based on hardness alone. This deviation from Archard scaling is traced to mechanically-driven structural evolution, consisting of grain growth and grain boundary relaxation, which occurs during wear. Comparison of these observations with previous wear studies suggests that the extent of structural evolution during wear depends on contact stresses and material removal rates. (c) 2013 Elsevier B.V. All rights reserved.