Effect of rare earth addition on the heterogeneous nucleation behavior of TiN in duplex stainless steel

2017 ◽  
Vol 114 (6) ◽  
pp. 603 ◽  
Author(s):  
Yongfei Hao ◽  
Guoguang Cheng ◽  
Qiqi Ma
Keyword(s):  
Stainless Steel ◽  
Rare Earth ◽  
Duplex Stainless Steel ◽  
Heterogeneous Nucleation ◽  
Nucleation Behavior ◽  
Rare Earth Addition ◽  
Heterogeneous Nucleation Behavior

Effects of Rare Earth Addition on the Inclusions and Mechanical Properties of 2205 Duplex Stainless Steel

2012 ◽  
Vol 503-504 ◽  
pp. 463-468 ◽  
Author(s):  
Xiao Liu ◽  
Long Mei Wang
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Rare Earth ◽  
Impact Toughness ◽  
Duplex Stainless Steel ◽  
Rare Earth Metals ◽  
Transverse Impact ◽  
Metallographic Examination ◽  
2205 Duplex Stainless Steel ◽  
Reduction Of Area

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.

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

2013 ◽  
Vol 662 ◽  
pp. 424-427 ◽  
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.

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

2012 ◽  
Vol 472-475 ◽  
pp. 411-418 ◽  
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.

The effect of rare earth alloying on the hot workability of duplex stainless steel — A study using processing map

2015 ◽  
Vol 86 ◽  
pp. 848-854 ◽  
Author(s):  
Xiaocong Ma ◽  
Zijun An ◽  
Lei Chen ◽  
Tianqiao Mao ◽  
Jianfeng Wang ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Rare Earth ◽  
Duplex Stainless Steel ◽  
Processing Map ◽  
Hot Workability

Effect of Rare Earth on the Inclusions and Pitting Resistance of Duplex Stainless Steel

2012 ◽  
Vol 528 ◽  
pp. 130-134
Author(s):  
Xiao Liu ◽  
Long Mei Wang
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
Rare Earth ◽  
Duplex Stainless Steel ◽  
Pitting Corrosion ◽  
Anodic Polarization ◽  
Polarization Curves ◽  
Metallographic Examination ◽  
2205 Duplex Stainless Steel ◽  
Pitting Corrosion Resistance

The anodic polarization curves of 2205 duplex stainless steel with various RE contents in 3.5% NaCl neutral solutions have been measured by electrochemical methods, The effect of rare earth on pitting corrosion resistance of 2205 duplex stainless steel has been studied by the metallographic examination. The results show that RE can effectively depress pitting corrosion, while the irregular inclusions of Al2O3, sulfide in the shape of clump are transformed into tiny dispersive round or oval RE inclusions, and it plays a good role in pitting resistance.

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