科研之友
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摘要
The hot deformation behavior of 316LN stainless steel have been investigated at 900 similar to 1250 degrees C and strain rates 0.005 similar to 5 s(-1) by means of hot compression tests on a Gleeble-1500D thermal-mechanical simulator. We have analyzed the flow stress-strain curve and acquired that the flow stress generally decreases with the rising deformation temperature or the decreasing strain rate. Then, the processing map at strain 0.2 and 0.6 of 316LN stainless steel has been developed based on the dynamic material model theories and Prasad instability criterion, and the total elongation and reduction in area under different hot deformation condition have been calculated according to the hot-tension tests. In addition, we have also analyzed the effects of temperature, strain rate and strain on the hot deformation microstructures have been analyzed of 316LN steel. These results have displayed that the best hot-workability domain of 316LN stainless steel is located at higher temperature and higher strain rate (1050 similar to 1250 degrees C, 0.05 similar to 0.5 s(-1)).
- 出版日期2011-3
- 单位太原科技大学
