Publications Details

Dynamic high-temperature compressive response of A 304L steel

Song, Bo; Antoun, Bonnie R.; Chen, Weinong

A split Hopkinson pressure bar (SHPB) was modified to characterize the dynamic compressive behavior of a 304L stainless steel at high temperatures. The shapes of the loading pulses were controlled such that the specimen deformed under dynamic equilibrium at constant strain rates. A heating chamber was used to heat specimen to 815 C and 927 C during dynamic experiments. In order to investigate the recrystallization and other microstructural changes, the SHPB was also modified to load the specimen only once during a test. Moreover, the specimens were quenched 6 and 30 seconds after the dynamic loading was applied to the specimen. Dynamic compressive stress-strain data at high temperatures for the 304L alloy were experimentally obtained.