Development of high-temperature Kolsky compression bar techniques for recrystallization investigation
Development of high-temperature Kolsky compression bar techniques for recrystallization investigation
复制标题
DOI：
10.1140/epjst/e2012-01583-5
复制
发表时间：
2012-05
期刊：
影响因子：
--
通讯作者：
B. Song;B. Antoun;M. Boston
中科院分区：
文献类型：
--
作者：
B. Song;B. Antoun;M. Boston
我们修改了Kuokkala团队最初开发的设计，开发了一种自动高温Kolsky压杆，用于表征304 L不锈钢在高温下的高速率性能。附加功能已实施到这个高温Kolsky压缩杆再结晶调查。这些新特性确保了对试样的单次加载以及在动态加载后对试样进行淬火的精确时间和温度控制。在21、204、427、649和871 °C（或70、400、800、1200和1600 °F）下，以332 s−1的恒定应变速率获得304 L不锈钢的动态压缩应力-应变曲线。对单次动态加载后进行特定时间和温度控制淬火的试样进行保存，以研究显微组织再结晶。
We modified the design originally developed by Kuokkala’s group to develop an automated high-temperature Kolsky compression bar for characterizing high-rate properties of 304L stainless steel at elevated temperatures. Additional features have been implemented to this high-temperature Kolsky compression bar for recrystallization investigation. The new features ensure a single loading on the specimen and precise time and temperature control for quenching to the specimen after dynamic loading. Dynamic compressive stress-strain curves of 304L stainless steel were obtained at 21, 204, 427, 649, and 871 °C (or 70, 400, 800, 1200, and 1600 °F) at the same constant strain rate of 332 s−1. The specimen subjected to specific time and temperature control for quenching after a single dynamic loading was preserved for investigating microstructure recrystallization.