Dispersion-Strengthened Alloys by the Mixalloying Process

[+] Author and Article Information
C. N. Chu

School of Industrial Engineering, Purdue University, West Lafayette, IN 47907

N. Saka, S. T. Oktay, N. P. Suh

Laboratory for Manufacturing and Productivity, Massachusetts Institute of Technology, Cambridge, MA 02139

J. Eng. Ind 113(4), 481-485 (Nov 01, 1991) (5 pages) doi:10.1115/1.2899727 History: Received October 01, 1989; Revised December 01, 1990; Online April 08, 2008


Ceramic particle-dispersed metal-matrix alloys were produced by the Mixalloying Process. In this process, two liquid metal jets were impinged into a mixing head and intimately mixed by turbulence. Liquid copper solution with dilute boron and liquid copper solution with dilute zirconium were impinged and submicron size zirconium diboride particles were produced in liquid copper. The copper-zirconium diboride mixture was solidified in a water cooled mold. Addition of excessive zirconium enhanced boride particle dispersion. Because of particle strengthening, the room temperature microhardness was twice that of annealed copper, and the hardness was retained up to 1173 K in one hour annealing treatments. Experimental result on copper-aluminum oxide alloy is also reported.

Copyright © 1991 by The American Society of Mechanical Engineers
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