Effect of ball-milling time on mechanical and magnetic properties of carbon nanotube reinforced FeCo alloy composites

Albaaji, Amar J. ORCID: https://orcid.org/0000-0002-3551-5974, Castle, Elinor G., Reece, Mike J., Hall, Jeremy P. ORCID: https://orcid.org/0000-0003-2737-9009 and Evans, Samuel L. ORCID: https://orcid.org/0000-0003-3664-2569 2017. Effect of ball-milling time on mechanical and magnetic properties of carbon nanotube reinforced FeCo alloy composites. Materials & Design 122 , pp. 296-306. 10.1016/j.matdes.2017.02.091

Preview

PDF - Accepted Post-Print Version Download (3MB) | Preview

Abstract

Carbon nanotubes (CNTs) reinforced FeCo alloys were produced by high energy ball-milling and spark plasma sintering (SPS). CNTs distribution in the FeCo alloy was gradually improved as ball-milling time increased, with a uniform dispersion achieved after 6 h ball-milling. Tensile tests demonstrated that, as the ball-milling time increased, the yield strength increased in the composites; a maximum 50% relative increase in tensile strength due to the addition of CNTs was achieved after 1 h ball-milling, which then decreased with further ball-milling. The elongation to fracture was significantly increased after 1 h ball-milling and then decreased with further ball-milling. SEM results show a patch of dimples in the fracture surface of the composite, indicating improved ductility due to CNTs. The coercivity was increased with increased ball-milling time, while the saturation induction showed a peak value after 1 h of ball-milling and then decreased with further ball-milling. Raman spectra of the composite indicated that no serious damage had been imparted to the CNTs during ball-milling.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Engineering
Uncontrolled Keywords:	Ball milling; Carbon nanotube; Spark plasma sintering
Publisher:	Elsevier
ISSN:	0264-1275
Date of First Compliant Deposit:	10 August 2017
Date of Acceptance:	28 February 2017
Last Modified:	07 Nov 2023 17:54
URI:	https://orca.cardiff.ac.uk/id/eprint/102932

Citation Data

Cited 37 times in Scopus. View in Scopus. Powered By Scopus® Data

Actions (repository staff only)

Edit Item