Friction extrusion of ODS copper rod made from powder. (December 2022)

• Record Type: Journal Article
• Authors: Ma, Xiaolong; Nickerson, Ethan; Wang, Tianhao; Zhang, Dalong; Pelletiers, Tom; Whalen, Scott; Li, Xiao
• Is Part Of: Journal of manufacturing processes. Volume 84(2022)
• Page Start: 223
• Page End: 229
• Publication Date: 2022-12
• Subjects: Friction extrusion -- ODS copper -- Powder metallurgy -- Mechanical properties; Production management -- Data processing -- Periodicals; Manufacturing processes -- Periodicals; Procestechnologie; Productietechniek; Production -- Gestion -- Informatique -- Périodiques; Fabrication -- Périodiques; Manufacturing processes; Production management -- Data processing; Periodicals; 670.5
• DOI: 10.1016/j.jmapro.2022.10.003
• Languages: English
• ISSNs: 1526-6125

Abstract

Abstract: Meters-long oxide dispersion strengthened copper rods were manufactured directly from powder by a single-step process, called friction extrusion. The average grain size was 880 nm, which was refined 40 times from powder precursor due to extensive shear deformation. Meanwhile, the average size of alumina particles was 60 nm which retains a decent oxide dispersion strengthening. Mechanical properties, including hardness, tensile strength, and ductility, were tested and found to have better or similar values than conventional sintered-then-extruded oxide dispersion strengthened copper materials. The presented technique promises a convenient avenue for the fabrication of oxide dispersion strengthened copper from powder. Highlights: Manufactured meters-long oxide dispersion strengthened copper rods directly from powder by friction extrusion. Refined grain size 40 times from powder precursor and dispersed strengthening particles uniformly in the matrix. Demonstrated friction extrusion as a potential to be a convenient and economical avenue to produce extrudate from pre-alloyed powder.