Strengthening Iron-Base Alloys by Shock Waves

摘要

Shock loading of all materials at 157 and 270 kilobars was completed. Hardness measurements were completed on all materials, including solution-treated, shocked, and aged A-286 steel. Aging of shock-loaded A-286 steel resulted in higher maximum aged hardness, and peak hardness was reached in shorter times. Transmission microscopy of the plain carbon and alloy structural steels was completed. Results showed that the amount of strengthening was associated with a dislocation density increase in the free ferrite. The relative amount of strengthening was found to be a function of the amount of free ferrite present. (Author)