Home Kovove Materialy-Metallic Materials 2011 Metallic Materials Vol. 49 (2011), no. 1, pp.93- 99

Journal info

Select Journal







Webshop Cart

Your Cart is currently empty.

Info: Your browser does not accept cookies. To put products into your cart and purchase them you need to enable cookies.

Metallic Materials Vol. 49 (2011), no. 1, pp.93- 99

Title: Microstructural stability and nanoindentation of an electrodeposited nanocrystalline Ni-1.5 wt. % P alloy
Author: M. J. PRASAD, A. CHOKSHI

Abstract: Microstructural stability of nanocrystalline Ni-1.5wt.%P alloy with an initial grain size of 3 nm processed by pulsed electrodeposition was studied using differential scanning calorimetry (DSC) and annealing. Microstructural characterization suggests that the observed exothermic peak during heating in DSC is related to both concurrent grain growth and Ni3P formation. Nanoindentation on samples with grain sizes from 3 to 50 nm revealed a breakdown in Hall-Petch strengthening in nano Ni-P alloy at grain sizes ≤ 10 nm, consistent with some previous observations. It is concluded that there is a grain boundary weakening regime for grain sizes < 10 nm, based on analysis which show that the data cannot be rationalized in terms of microstrain relaxation, variation in elastic modulus, texture evolution and duplex structure formation.

Keywords: nanocrystalline, nickel, nanoindentation, Hall-Petch relationship, grain boundary weakening
Published online: 08-Feb-2011
Year: 2011, Volume: 49, Issue: 1 Page From: 93, Page To: 99
doi:10.4149/km_2011_1_93
Price: Call for Pricing






© AEPress s.r.o
Copyright notice: For any permission to reproduce, archive or otherwise use the documents in the ELiS, please contact AEP.