Authors: Thomas Kozmel Sammy Tin
Publish Date: 2015/04/07
Volume: 46, Issue: 7, Pages: 3208-3219
Abstract
Recent interest in bulk ultrafinegrained microstructures has given rise for the necessity to quantify their behavior during heat treatment should any subsequent thermal processing of the material be necessary after forming The present study showed that the microstructure of 9310 steel forgings containing varying fractions of submicron grains retained some degree of stability after 4 hours of heat treatment between the temperatures of 522 K and 866 K 249 °C and 593 °C respectively The behavior of the microstructure during heat treatment was largely influenced by both the carbide volume fraction and distribution which affected the level of Zener Drag present This in effect controlled the type of growth behavior exhibited by the ferrite grains and the ability to retain the finegrained structure
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