scholarly journals INFLUENCE OF NON-METALLIC INCLUSIONS ON THE CORROSION RESISTANCE OF STAINLESS STEELS IN ARC SURFACING

2021 ◽  
Vol 2021 (4) ◽  
pp. 4775-4780
Author(s):  
IVETA PANDOVA ◽  
◽  
VALERY MAKARENKO ◽  
PAVLO MITROFANOV ◽  
KOSTIANTYN DYADYURA ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Stainless Steels ◽  
Complex Composition ◽  
Cored Wire ◽  
Composition And Structure ◽  
Martensitic Class ◽  
Metallic Inclusions ◽  
Deposited Metal ◽  
Pulsed Arc ◽  
Wire Feed

The influence of non-metallic inclusions on the corrosion resistance of stainless steel of the austenitic-martensitic class, deposited in one layer with flux-cored wire under the flux by the arc method in the mode of stationary and pulsed arc burning, has been studied. In the latter case, the wire feed impulse was 0.5 and 0.7 Hz. The selected surfacing conditions, with both methods of the process, contribute to the formation of non-metallic inclusions of complex composition and structure in the deposited metal, including those containing calcium and its compounds with other elements, which are classified as corrosive, accelerating the occurrence of corrosion phenomena.

scholarly journals The Role of MW Plasma Treatment on the Corrosion Resistance of Stainless Steels

2013 ◽  
Vol 58 (4) ◽  
pp. 1169-1175 ◽  
Author(s):  
D. Kasprzyk ◽  
B. Stypuła ◽  
P. Kustrowski ◽  
M. Drozdek
Keyword(s):  
Corrosion Resistance ◽  
Plasma Treatment ◽  
Stainless Steels ◽  
Photoelectron Spectroscopy ◽  
Electron Cyclotron Resonance ◽  
Nitrogen Plasma ◽  
Pitting Corrosion Resistance ◽  
Composition And Structure ◽  
Steel Surfaces

Abstract Two stainless steels (S32404 duplex and S32615 austenitic) were subject to the carbon/nitrogen plasma treatment to examine the role of alloy composition and structure in the behavior of surface during modification. The modification process was performed in the electron cyclotron resonance (ECR) micro wave plasma system, with the frequency of 2.45 GHz and the generator power of 350 W, and with the use of reactive gas mixtures containing CH4 and N2, at the low temperature of 400°C and under pressure of 0.2Tr. The treated surface was analyzed by means of X-ray photoelectron spectroscopy (XPS). The corrosion resistance of the samples was determined on the basis of LSV polarization curves in 3% sodium chloride solution at 37°C. The treated steel surfaces showed a higher tendency for passivation and higher pitting corrosion resistance compared to the non-modified surfaces.

scholarly journals THE INFLUENCE OF MICROALLOYING WITH BORON ON PROPERTIES OF AUSTENITE STAINLESS STEEL X8CRNIS18-9

2021 ◽  
Vol 9 (10) ◽  
pp. 695-700
Author(s):  
Dervis Mujagic ◽  
◽  
Aida Imamovic ◽  
Mustafa Hadzalic ◽  
◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Corrosion Resistance ◽  
Austenitic Stainless Steel ◽  
Stainless Steels ◽  
Operating Conditions ◽  
Structural Elements ◽  
Austenite Stainless Steel ◽  
Transverse Strength ◽  
Metallic Inclusions

More recently a modified stainless steels have been used to produce various structural elements that work in complex operating conditions. Stainless steel X8CrNiS18-9 (standard EN 10088-3: 2005) is the most commonly used austenitic stainless steel due to its good machinability. This steel has high mechanical and working properties thanks to a complex alloying, primarily with the elements such as chromium and nickel. The content of sulphur present in the steel from 0.15 to 0.35% improves machinability. However, while sulphur improves machinability at the same time decreases the mechanical properties particularly toughness. The addition of sulphur, which is the cheapest available additive for free machining, will impair not only the transverse strength and toughness, but also the corrosion resistance.The aim of this work is to determine the influence of microalloying with boron on the machinability, corrosion resistance and mechanical properties the mentioned steel, but alsoto determine the effect of microalloying with boron on above steel, which is already microalloyed with zirconium, tellurium, or both elements (zirconium and tellurium) due to modification of non-metallic inclusions and improvement of properties.

Influence of introduction of titanium into the composition of a powder wire of type 25X5FMS

2021 ◽  
pp. 135-138
Author(s):  
A.A. Usol’tsev ◽  
N.A. Kozyrev ◽  
A.R. Mikhno ◽  
A.A. Tyurin ◽  
A.A. Umansky
Keyword(s):  
Mechanical Properties ◽  
Physical And Mechanical Properties ◽  
Powder Wire ◽  
Cored Wire ◽  
Metallic Inclusions ◽  
Deposited Metal

The effect of titanium introduction on the microstructure and physical and mechanical properties of metal deposited with flux-cored wire 25X5FMS has been studied. Surfacing of the investigated samples was carried out using a flux made from crushed slag produced by silicomanganese. The microstructure and non-metallic inclusions in the deposited layer have been studied. It is shown that with an increase in the concentration of titanium in the deposited metal, the hardness increases and the wear decreases.

AK STEEL NITRONIC 30

Alloy Digest ◽  
2013 ◽  
Vol 62 (3) ◽  
Keyword(s):  
Corrosion Resistance ◽  
High Temperature ◽  
Physical Properties ◽  
Stress Corrosion Cracking ◽  
Stainless Steels ◽  
Abrasion Resistance ◽  
Atmospheric Corrosion ◽  
High Strength ◽  
Good Resistance ◽  
Temperature Performance

Abstract AK Steel Nitronic 30 has good wet abrasion resistance, good resistance to aqueous and atmospheric corrosion, high strength, economy, and improved stress-corrosion cracking resistance over common 18-8 stainless steels. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as forming and joining. Filing Code: SS-1138. Producer or source: AK Steel Corporation.

AL TECH 203EZ and 303EZ

Alloy Digest ◽  
1978 ◽  
Vol 27 (11) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Stainless Steels ◽  
High Speed ◽  
Heat Treating ◽  
Temperature Performance ◽  
Final Design ◽  
Mechanical Properties And Corrosion ◽  
Specialty Steel ◽  
Machining Operations ◽  
Machining Characteristics

Abstract AL Tech 203EZ and 303EZ are non-magnetic, austenitic, free-machining stainless steels specifically designed for use in high-speed, automatic machining operations. These modifications retain, in so far as possible, the good mechanical properties and corrosion resistance of the basic compositions which they represent. Sulfur or selenium is added to produce the free-machining characteristics. Data are typical; do not use for specification or final design. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as fracture toughness. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-358. Producer or source: AL Tech Specialty Steel Corporation.

AISI TYPE 303 and 303Se

Alloy Digest ◽  
1961 ◽  
Vol 10 (12) ◽  
Keyword(s):  
Fracture Toughness ◽  
Stainless Steel ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Physical Properties ◽  
Stainless Steels ◽  
Heat Treating ◽  
Steel Mills ◽  
Temperature Performance ◽  
Aisi Type

Abstract AISI Types 303 and 303 Se austenitic chromium nickel stainless steels to which elements have been added to improve machining and non-seizing characteristics. They are the most readily machinable of all the austenitic chromium nickel grades and are suitable for use in automatic screw machines. They are widely used to minimize seizing and galling. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness, creep, and fatigue. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-126. Producer or source: Stainless steel mills.

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