2017 journal article

Synthesis and characterization of an in situ consolidated nanocrystalline Cu88Al11.5Y0.5 alloy

Journal of Alloys and Compounds, 717, 219–225.

By: K. Sikdar, S. Chakravarty, D. Roy n, R. Scattergood n & C. Koch n

co-author countries: United States of America 🇺🇸
author keywords: Nanocrystalline; Copper alloys; Mechanical alloying; In situ consolidation; Strengthening mechanism
Source: Crossref
Added: February 24, 2020

Artifact-free bulk nanocrystalline Cu88Al11.5Y0.5 alloy has been synthesized by in situ consolidation of mechanically alloyed powder blend followed by annealing of the consolidated compact at 200 °C (or 0.35 Tm) for 30 min. Grain size determination and phase identification have been carried by X-ray line broadening analysis and transmission electron microscopy (TEM). Hardness measurement has demonstrated that the Hall-Petch effect is the dominant strengthening mechanism for both as-consolidated and annealed specimens. Strength improvement after short annealing time was attributed to the relaxations of non-equilibrium grain boundaries.