Physics
Scientific paper
Feb 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980mta....11..231e&link_type=abstract
Metallurgical Transactions A, Volume 11, Issue 2, pp.231-237
Physics
Scientific paper
The strain aging characteristics of a reinforcing steel made with vanadium ranging between zero and 0.1 pct and with two aluminum levels have been investigated for the ashot rolled condition. It has been shown that vanadium contents of 0.04 to 0.06 pct (a V/N ratio of 7 to 9) will result in the combination of almost all the active nitrogen as vanadium nitride and suppresses natural strain aging. Vanadium in excess of this level results in the precipitation of vanadium carbide and the consequential precipitation hardening gives an increase in the yield strength, tensile strength, and impact transition temperature without imparting further beneficial effect with regard to strain aging. The mechanical properties have been shown to be generally unaffected by the two different aluminum levels, and no grain refinement resulted from either the vanadium or aluminum additions. This absence of grain refinement and the precipitation hardening results in an increase in the impact transition temperature with increasing vanadium content, although this increase is initially slow whilst the active nitrogen content is being reduced.
Erasmus L. A.
Pussegoda L. N.
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