On the phase evolution and dissolution process in Cu-Cr alloys deformed by high pressure torsion
0205 materials engineering
Materials Science(all)
02 engineering and technology
0210 nano-technology
Condensed Matter Physics
DOI:
10.1016/j.scriptamat.2017.02.009
Publication Date:
2017-02-20T12:31:06Z
AUTHORS (4)
ABSTRACT
Normally immiscible 57 wt% Cu–43 Cr compounds were mechanically alloyed by means of high pressure torsion with large and controllable strains. A strain-saturated state in bulk was achieved after 100 rotations deformation (effective strain 1360), a stable grain size 13.7 nm largest solubility 32 Cu matrix. The phase fraction change between face-centered cubic body-centered due to dissolution during continuous captured accurately calculated, indicating negative exponential mode. phenomenological mechanism based on the kinetic competition mixing under sustained external forcing thermal diffusion induced decomposition proposed, which well compliant evolution observed from experimental results.
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