Influence of Chloride for SCC Susceptibility on 15Cr Stainless Steel at High Temperatures under CO2 Environment

2017 ◽  
Vol 741 ◽  
pp. 42-49
Author(s):  
Toshiyuki Sunaba ◽  
Susumu Hirano ◽  
Tadao Ishihara
Keyword(s):  
Stainless Steel ◽  
High Temperature ◽  
Stainless Steels ◽  
Anodic Polarization ◽  
Cathodic Polarization ◽  
Martensitic Stainless Steel ◽  
Chloride Ion ◽  
The Other ◽  
Ion Concentration ◽  
Martensitic Stainless Steels

The effects of chloride ion concentration on SCC susceptibility of 15Cr and 13Cr martensitic stainless steels were investigated at 180°C by SSRT. Transgranular SCC occurred in the environment containing CO2 and chloride ion. The increasing chloride ion concentration was significantly affected SCC susceptibility of 15Cr SS. In addition, the contribution of hydrogen to SCC was examined at high temperature by SSRT with electrochemically polarization. The cathodically charged specimens showed hydrogen embrittlement. The fracture surface was similar to that of high temperature SCC. On the other hand, the SCC was accelerated by anodic polarization and not by cathodic polarization. The SCC behavior of martensitic stainless steel at high temperature is affect by evolved hydrogen atom. It is concluded that hydrogen plays a key role in the crack propagation.

CLC 18.10LN

Alloy Digest ◽  
2006 ◽  
Vol 55 (1) ◽  
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
Shear Strength ◽  
High Temperature ◽  
Austenitic Stainless Steel ◽  
Stainless Steels ◽  
The Other ◽  
Low Carbon ◽  
Good Corrosion Resistance ◽  
Temperature Performance

Abstract CLC 18.10LN is an austenitic stainless steel with 18% Cr, 9.5% Ni, and 0.14% N to provide good corrosion resistance at strengths above the other low-carbon stainless steels. This datasheet provides information on composition, physical properties, elasticity, tensile properties, and shear strength as well as creep. It also includes information on high temperature performance and corrosion resistance as well as forming, machining, and joining. Filing Code: SS-950. Producer or source: Industeel USA, LLC.

An Electrochemical Study Of Pitting Corrosion in Stainless Steels (Part 1—Pit Growth)

CORROSION ◽  
1959 ◽  
Vol 15 (1) ◽  
pp. 48-54 ◽  
Author(s):  
N. D. GREENE ◽  
M. G. FONTANA
Keyword(s):  
Stainless Steel ◽  
Pitting Corrosion ◽  
Stainless Steels ◽  
Chloride Ion ◽  
Corrosion Current ◽  
Ion Concentration ◽  
Solution Composition ◽  
Current Interruption ◽  
Percent Nickel ◽  
First Time

Abstract By means of a unique artificial pit specimen, pit growth on 18 percent chromium-8 percent nickel stainless steel has been measured and characterized. The effects of solution composition, agitation, atmosphere, corrosion current interruption, chloride ion concentration, and inhibitor additions have been investigated. Pit interaction during pit growth has also been determined. The autocatalytic nature of pitting has been verified, and evidence of ion screening at pit sites has been experimentally observed for the first time. 3.2.2

AK 420 STAINLESS STEEL

Alloy Digest ◽  
2015 ◽  
Vol 64 (6) ◽  
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
Physical Properties ◽  
Tensile Properties ◽  
Stainless Steels ◽  
Martensitic Stainless Steel ◽  
Heat Treating ◽  
Martensitic Stainless Steels ◽  
Good Corrosion Resistance ◽  
Increased Strength

Abstract AK 420 martensitic stainless steel has good corrosion resistance with increased strength over other 400 martensitic stainless steels. The alloy is magnetic. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, and joining. Filing Code: SS-1212. Producer or source: AK Steel Corporation.

Tensile Properties of Martensitic Stainless Steel Weldments

2007 ◽  
Vol 23 ◽  
pp. 319-322 ◽  
Author(s):  
R. Yilmaz ◽  
Ali Türkyilmazoglu
Keyword(s):  
Stainless Steel ◽  
Stainless Steels ◽  
Arc Welding ◽  
Martensitic Stainless Steel ◽  
Shielding Gases ◽  
Gas Composition ◽  
Shielding Gas ◽  
Martensitic Stainless Steels ◽  
Gas Tungsten Arc ◽  
Microhardness Profile

In this study, AISI 420 martensitic stainless steels were welded by GTAW (gas tungsten arc welding) using ER 316L consumables. Pure argon, argon + 25% He and argon + 5% N2 were used as shielding gases. The obtained results indicated that shielding gases have some effect on the properties of the martensitic stainless steel weldments. The use of argon+5%N2 provides the highest tensile strength values and higher microhardness profile compared to the other shielding gas composition used.

A Comparative Study of Cavitation Erosive Behaviour of 23/8N Nitronic Steel and 13/4 Martensitic Stainless Steel

2012 ◽  
Vol 585 ◽  
pp. 554-558 ◽  
Author(s):  
Ashish Selokar ◽  
D.B. Goel ◽  
Ujjwal Prakash
Keyword(s):  
Stainless Steel ◽  
Stainless Steels ◽  
Power Plants ◽  
Cavitation Erosion ◽  
Erosion Resistance ◽  
Martensitic Stainless Steel ◽  
Hydroelectric Power ◽  
Martensitic Steels ◽  
Martensitic Stainless Steels ◽  
Hydroelectric Power Plants

Abstract: Hydroturbine blades in hydroelectric power plants are subjected to erosion. Currently these blades are made of 13/4 martensitic stainless steel (ASTM grade A743). This steel suffers from several maintenance and welding related problems. Nitronic steels are being considered as an alternative to martensitic stainless steels since they have good weldability. In present work, erosive behaviour of 13/4 Martensitic and Nitrogen alloyed austenitic stainless steel (23/8N steel) has been studied. Cavitation erosion tests were carried out in distilled water at 20 KHz frequency at constant amplitude. Microstructure of eroded surface, mechanical properties and erosion rate were characterized. It was observed that 23/8N steel possesses excellent resistance to erosion in comparison to 13/4 martensitic steels. 23/8N steel showed good hardness coupled with high tensile toughness and work hardening ability, leading to improved erosion resistance.

scholarly journals Characterization of 410NiMo Coatings Deposited By Thermal Spray And Re- Cast With TIG On CA6NM Martensitic Stainless Steel Against Cavitation Erosion

2021 ◽  
Author(s):  
Émillyn Ferreira Trevisani Olivio ◽  
Paulo Sergio Olivio Filho ◽  
Janaina Fracaro de Souza ◽  
Paulo Victor Prestes Marcondes ◽  
João Roberto Sartori Moreno
Keyword(s):  
Stainless Steel ◽  
Thermal Spray ◽  
Stainless Steels ◽  
Cavitation Erosion ◽  
Martensitic Stainless Steel ◽  
Steel Substrate ◽  
Thermal Spraying ◽  
Welding Process ◽  
Operating Conditions ◽  
Martensitic Stainless Steels

Abstract In most applications, martensitic stainless steels are subjected to operating conditions in which good mechanical properties and wear resistance are required. CA6NM is a soft martensitic stainless steel that has high shear stress and toughness, good resistance to corrosion and cavitation, and better weldability than conventional martensitic stainless steels. These steels are susceptible to cavitation erosion which is the process of removing material due to the progressive action of erosive wear caused by the implosion of bubbles close to the surface of the mechanical element. Welding and thermal spraying are normally used to produce coatings when there is a need to increase the useful life of systems and parts, or in some cases for refurbishing. In this work 410NiMo martensitic stainless steel, in the form of wire and rod, were deposited by electric arc and flame thermal spraying processes respectively over a CA6NM martensitic stainless steel substrate. In order to improve the layer performance the sprayed coatings were remelted by the TIG welding process. The specimens were evaluated by accelerated cavitation according to ASTM G32-1 0 standard, Vickers microhardness, optical microscopy, X-ray diffraction, SEM and EDS. The tests showed coatings with low porosity and resistant to erosion by cavitation comparable with welded coatings. Making thermal spray with reflow by the TIG process an alternative in the application of this type of coating.

AISI No. 633

Alloy Digest ◽  
1981 ◽  
Vol 30 (7) ◽  
Keyword(s):  
Heat Treatment ◽  
Stainless Steel ◽  
Stainless Steels ◽  
High Strength ◽  
Heat Treating ◽  
Corrosion Resistant ◽  
Martensitic Stainless Steels ◽  
Steel Mills ◽  
Temperature Performance ◽  
Structural Applications

Abstract AISI No. 633 is a chromium-nickel-molybdenum stainless steel whose properties can be changed by heat treatment. It bridges the gap between the austenitic and martensitic stainless steels; that is, it has some of the properties of each. Its uses include high-strength structural applications, corrosion-resistant springs and knife blades. This datasheet provides information on composition, physical properties, hardness, 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-389. Producer or source: Stainless steel mills.

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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