2Cr13 stainless steel containing tare earth Y was used for experiments,and thermal simulation experiment research was carried out by using the Gleeble-1500D heat simulator.Microstructures of the initial state and the thermal deformation were observed,and the thermal simulation experiment curve was analyzed.The evolvement of microstructure and stress and strain after four-pass deformation was obtained.

The effect of Ce on inclusions and impact toughness of 2Cr13 stainless steel were studied by SEM and electron spectroscopy. Thermodynamic calculation was used to analyze the formation of RE inclusions in 2Cr13 stainless steel. The result shows that Al 2 O 3 and MnS can be entirely replaced by Ce 2 O 2 S and CeS. Fracture is changed from cleavage to ductile fracture by adding Ce to the 2Cr13 stainless steel, and the spherical rare earth oxysulfide inclusions (Ce 2 O 2 S) in the dimple are the main factors. The transverse impact value of 2Cr13 stainless steel has been improved obviously by Ce. The transverse impact value of RE-2Cr13 is increased by 54.55% at the temperature of — 40 °C, comparing with 0RE-2Cr13.

Study of hot deformation microstructure and properties for 2Cr13 stainless steel containing rare earth Y

Citations

Effect of Ce on Inclusions and Impact Property of 2Cr13 Stainless Steel

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