Deformation of an extruded nickel beryllide between room temperature and 820 C Academic Article uri icon


  • The mechanical properties of nickel beryllide, NiBe, have been investigated in the temperature range 20820 C. The room temperature properties were studied using tension, bending, and compression tests, while the elevated temperature properties were characterized in compression only. NiBe exhibits some ductility at room temperature; the strains to failure in tension and compression are 1.3% and 13%, respectively. Fracture is controlled primarily by the cohesive strength of grain boundaries. At high temperatures, NiBe is readily deformablestrains in excess of 30% can be achieved at temperatures as low as 400 C. Strain hardening rates are high, and the flow stress decreases monotonically with temperature. The high temperature strength of NiBe is as good or better than that of NiAl, but not quite as good as CoAl.

published proceedings

  • Journal of Materials Research

author list (cited authors)

  • Pharr, G. M., Courington, S. V., Wadsworth, J., & Nieh, T. G.

citation count

  • 4

complete list of authors

  • Pharr, GM||Courington, SV||Wadsworth, J||Nieh, TG

publication date

  • December 1991