TEM Study for Strengthening Mechanisms in Elgiloy

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Elgiloy is Co based alloy (40wt%Co, 20wt%Cr, 15wt%Ni, 14wt%Fe and 7wt%Mo). It was strengthened by cold work and is capable of additional hardening by aging. The effects of solution treatment, cold working and age-hardening on the microstructure of elgiloy were investigated using optical microscope, scanning electron microscope (SEM) and transmission electron microscope (TEM). As rolled strips were solution treated at 1065°C/1hr. These solution treated strips were then reduced 50% by cold rolling. After cold-deformation both є-hcp phase and fcc deformation twins are also considered to coexist at room temperature. The cold worked strips were then age hardened at (450-600)°C. The age hardened strips showed formation of additional є-phase (via α f c c є h c p transformation).

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Edited by:

Shaheed Khan, Iftikhar us Salam and Karim Ahmed

Pages:

268-274

DOI:

10.4028/www.scientific.net/KEM.442.268

Citation:

I.N. Qureshi et al., "TEM Study for Strengthening Mechanisms in Elgiloy", Key Engineering Materials, Vol. 442, pp. 268-274, 2010

Online since:

June 2010

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$35.00

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