Td. Shen et Cc. Koch, FORMATION, SOLID-SOLUTION HARDENING AND SOFTENING OF NANOCRYSTALLINE SOLID-SOLUTIONS PREPARED BY MECHANICAL ATTRITION, Acta materialia, 44(2), 1996, pp. 753-761
Citations number
60
Categorie Soggetti
Material Science","Metallurgy & Metallurigical Engineering
Nanocrystalline Ti100-xCux(x = 0-8), Nb100-xCux(x = 0-20), Ni100-xCux
(x = 0-50), Cr100-xCux(x=0-20), Fe100-xCux(x=0-15). Cu100-xNix(x=0-50)
, Cu100-xFex(x=0-50) and Cu100-xCox(x=0-50) solid solutions have been
prepared by mechanical attrition of elemental powder mixtures. X-ray d
iffraction, differential scanning calorimetry, and microhardness measu
rements are utilized to investigate the structural evolution and the t
hermal and mechanical properties of the solid solutions. The strength
of the nanocrystalline solid solution depends on both solid solution h
ardening and grain boundary hardening while the latter makes the major
contribution to the total strength. The increase or decrease in hardn
ess is dependent on the combined effects of solid solution hardening a
nd either increased or decreased hardness resulting from changes in gr
ain boundary hardening.