YANG Xiao-ya, HE An, XIE Gan-lin, WANG Xi-tao. Dynamic recrystallization behavior of an austenitic stainless steel for nuclear power plants[J]. Chinese Journal of Engineering, 2015, 37(11): 1447-1455. DOI: 10.13374/j.issn2095-9389.2015.11.009
Citation: YANG Xiao-ya, HE An, XIE Gan-lin, WANG Xi-tao. Dynamic recrystallization behavior of an austenitic stainless steel for nuclear power plants[J]. Chinese Journal of Engineering, 2015, 37(11): 1447-1455. DOI: 10.13374/j.issn2095-9389.2015.11.009

Dynamic recrystallization behavior of an austenitic stainless steel for nuclear power plants

  • In order to study the effects of deformation conditions and initial grain size on the dynamic recrystallization behavior of316 LN austenitic stainless steel,single pass hot compression tests were conducted on a Gleeble-1500 D thermal-mechanical simulator with the deformation temperature of 900-1200℃,the strain rate of 0. 001-10 s-1,the true strain of 0. 1-0. 9 and the initial grain size of 122-297 μm. It is obtained that the ratio of critical strain to peak strain and the ratio of critical stress to peak stress are 0. 38 and 0. 89,respectively. A dynamic recrystallization kinetic model and a grain size evolution model were established based on experimental data. In addition,the developed models were modified for DEFORM-3D finite element simulation. It can be found that the simulated values by the modified model and experimental data agree well,indicating that the modified models have good accuracy.
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