Effect of Rare Earth Metals on the Microstructure and Impact Toughness of a Cast 0.4C-5Cr-1.2Mo-1.0V Steel.

The effects of rare earth metals on the inclusions and the mechanical properties of 2205 duplex stainless steel were studied by metallographic examination, scanning electron microscope (SEM) and energy spectrum analysis. The results show that the morphologies and sizes of non-metallic inclusions in 2205 duplex stainless steel are changed, and rare earth metals played a very good role of modifying inclusions. The fracture mode of 2205 duplex stainless steel is typical cleavage fracture, but quasi-cleavage and dimple fracture after adding RE into the steel, and the spherical inclusions of rare earth oxysulfide in the dimple are the main factors for this transformation. The transverse impact toughness of 2205 duplex stainless steel is improved obviously by RE. In comparison with 2205 duplex stainless steel without RE, the transverse impact toughness of 2205 duplex stainless steel with RE is increased 20.49% at -40°C, and the room temperature strength are improved, the elongation and reduction of area have been improved 11.67%, 24.55% respectively.

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Effects of Ce on the Inclusions and Mechanical Properties of 2Cr13 Stainless Steel

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.174-177.1344 ◽

2012 ◽

Vol 174-177 ◽

pp. 1344-1348

Author(s):

Xiao Liu ◽

Long Mei Wang

Keyword(s):

Mechanical Properties ◽

Stainless Steel ◽

Rare Earth ◽

Impact Toughness ◽

Rare Earth Metals ◽

Transverse Impact ◽

Metallographic Examination ◽

Dimple Fracture ◽

Reduction Of Area

The effects of rare earth metals on the inclusions and the mechanical properties of 2Cr13 stainless steel were studied by metallographic examination, scanning electron microscope (SEM) and energy spectrum analysis. The results show that the morphologies and sizes of inclusions in 2Cr13 stainless steel are changed, and rare earth metals played a very good role of modifying inclusions. The fracture mode of 2Cr13 stainless steel is typical cleavage fracture, but quasi-cleavage and dimple fracture after adding Ce into the steel, and the spherical inclusions of rare earth oxysulfide in the dimple are the main factors for this transformation. The transverse impact toughness of 2Cr13 stainless steel is improved obviously by Ce. In comparison with 2Cr13 stainless steel without Ce, the transverse impact toughness of 2Cr13 stainless steel with Ce is increased 54.55% at -40°C, and the room temperature strength are improved, the elongation and reduction of area have been improved 11.90%, 16.67 respectively.

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Effect of Rare Earth Metals on Microstructure and Impact Property of Duplex Stainless Steel

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.662.424 ◽

2013 ◽

Vol 662 ◽

pp. 424-427 ◽

Cited By ~ 1

Author(s):

Xiao Liu ◽

Jing Long Liang

Keyword(s):

Stainless Steel ◽

Rare Earth ◽

Impact Toughness ◽

Duplex Stainless Steel ◽

Earth Element ◽

Impact Test ◽

Rare Earth Metals ◽

Transverse Impact ◽

Metallographic Examination ◽

2205 Duplex Stainless Steel

The effect of rare earth element on structure and mechanical properties of 2205 duplex stainless steel were studied by metallographic examination, scanning electron microscope (SEM), tensile test and impact test. The results show that the proper amount of rare earth can refine microstructure of 2205 duplex stainless steel. Fracture is changed from cleavage to ductile fracture by adding RE to 2205 duplex stainless steel. 2205 duplex stainless steel containing 0.05% RE can improve its impact toughness, and the transverse impact toughness is increased 15.56% at -20°C respectively comparing with that of 2205 duplex stainless steel without RE.

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Effect of Rare Earth Metals on Inclusions and Impact Property of 2205 Duplex Stainless Steel

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.472-475.411 ◽

2012 ◽

Vol 472-475 ◽

pp. 411-418 ◽

Cited By ~ 3

Author(s):

Xiao Liu ◽

Long Mei Wang

Keyword(s):

Stainless Steel ◽

Rare Earth ◽

Impact Toughness ◽

Duplex Stainless Steel ◽

Electron Spectroscopy ◽

Rare Earth Metals ◽

Transverse Impact ◽

2205 Duplex Stainless Steel ◽

Main Factors ◽

Rare Earth Oxysulfide

The effect of rare earth metals on inclusions and impact toughness of 2205 duplex stainless steel were studied by SEM and electron spectroscopy. Thermodynamic calculation was used to analyze the formation of RE inclusions in 2205 duplex stainless steel. The result shows that aluminosilicate compound inclusion and sulfide inclusion can be entirely replaced by RE2O2S and RES. Fracture is changed from cleavage to ductile fracture by adding RE to the 2205 duplex stainless steel, and the spherical rare earth oxysulfide inclusions-RE2O2S in the dimple are the main factors. The transverse impact value of 2205 duplex stainless stainless steel has been improved obviously by RE. The transverse impact value of RE-2205 is increased 20.49% at the temperature of -40°C, comparing with 0RE-2205.

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