罗刚, 王辉绵. Test and Study on Relative Hot Plasticity of MnS Inclusion in a New Free-Cutting Stainless Steel TBPS[J]. Special Steel, 2016, 37(2): 1-3.DOI:
The test free-cutting stainless steel TBPS (/% : 0.02C
0.75Si
1.50Mn
0.008P
0.21S
19.70Cr
1.10Mo
0.llPb
0.008Te) is melted by vacuum induction furnace + electro-slag remelting (ESR)(Φ350 mm
500 kg ingot)
and the relative hot plasticity of MnS inclusion in ESR ingot with deformation 10%-70% at 900-1200 °C has been tested and studied by Thermomechanical Simulator Gleeble 3800. The results show that at 900-1100 ℃ with increasing deformation the relative plasticity index γ of MnS inclusion decreases ; at 1200 °C the effect of deformation on the relative plasticity index γ of MnS inclusion is minor ; and with increasing the deformation temperature
the relative plasticity index γ of MnS trends towards decreasing
especially at 1200℃; the relative plasticity index γ decreases obviously. In order to decrease the elongation deformation of MnS to get better free-cutting performance
it available for steel TBPS to hot deform by larger pass deformation at higher temperature.