Abstract
The aim of the present work is to study the deformation characteristics of four Cu-Ti alloys. This paper presents results on true stress-strain relationship, variation of strain hardening exponent(n) with Ti content, and the Transmission Electron Microscopy (TEM) microstructures of interrupted tensile test specimens, revealing the two kinds of deformation in these alloys. From the studies on deformation behavior in solution treated Cu-Ti alloys, it is concluded that: (1) flow stress increases with decreasing grain size and increasing Ti content; (2) strain hardening exponent, n, is independent of grain size, but decreases with increasing Ti content; (3) Cu-1.5 Ti and Cu-2.7 Ti alloys deform by slip, whereas Cu-4.5 Ti and Cu-5.4 Ti alloys exhibiting modulations and fine scale precipitation respectively, deform predominantly by twinning.
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