Effects of Surface Grinding on Hardness Distribution and Residual Stress in Low Carbon Austenitic Stainless Steel SUS316L

Welding residual stress is one of the most important factors of stress corrosion cracking (SCC) for austenitic stainless steel in pressure boundary piping in nuclear power plants. The effect of excessive loading, such as an earthquake, on the residual stress was evaluated by three-dimensional analyses based on finite element method (FEM). The FEM analyses were performed using three-dimensional model for a 250A piping butt weld of low carbon stainless steel of Type 316L. A welding simulation method used in this work is based on the moving heat source with the double ellipsoid model and was confirmed by comparing with the experimental measurements. After conducting welding residual stress simulation, several loading patterns of bending moment and uni-axial displacements have been applied to a model by varying amount of moment and displacement. The analyses indicated that higher loading to bending and axial stresses caused higher relaxation of welding residual stress near piping welds. The difference in the effect of loading direction was observed for both cases. It is concluded that the SCC growth rate might be decreased as loading level increased.

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Study on Mechanism of Intergranular Stress Corrosion Cracking and Analysis of Residual Stress and Work Hardening in Welds of Low-Carbon Austenitic Stainless Steel with Hard Surface Machining

Zairyo-to-Kankyo ◽

10.3323/jcorr.56.568 ◽

2007 ◽

Vol 56 (12) ◽

pp. 568-575 ◽

Cited By ~ 4

Author(s):

Hiroaki Mori ◽

Jinya Katsuyama ◽

Masahito Mochizuki ◽

Kazutoshi Nishimoto ◽

Masao Toyoda

Keyword(s):

Residual Stress ◽

Stainless Steel ◽

Austenitic Stainless Steel ◽

Stress Corrosion ◽

Stress Corrosion Cracking ◽

Work Hardening ◽

Low Carbon ◽

Intergranular Stress Corrosion ◽

Surface Machining ◽

Intergranular Stress Corrosion Cracking

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Estimation of Some Mechanical Properties for Similar & Dissimilar Welded Joints

Wasit Journal of Engineering Sciences ◽

10.31185/ejuow.vol2.iss1.24 ◽

2014 ◽

Vol 2 (1) ◽

pp. 59-76

Author(s):

Abdullah Daie'e Assi

Keyword(s):

Stainless Steel ◽

Carbon Steel ◽

Austenitic Stainless Steel ◽

Base Metal ◽

Welded Joints ◽

Plate Thickness ◽

Low Carbon Steel ◽

Dissimilar Metals ◽

Low Carbon ◽

Steel Type

This research deals with the choice of the suitable filler metal to weld the similar and dissimilar metals (Low carbon steel type A516 & Austenitic stainless steel type 316L) under constant conditions such as, plate thickness (6 mm), voltage (78 v), current (120 A), straight polarity. This research deals with three major parts. The first parts Four types of electrodes were used for welding of dissimilar metals (C.St A516 And St.St 316L) two from mild steel (E7018, E6013) and other two from austenitic stainless steel (E309L, E308L) various inspection were carried out include (Visual T., X-ray T., δ- Ferrite phase T., and Microstructures T.) and mechanical testing include (tensile T., bending T. and micro hardness T.) The second parts done by used the same parameters to welding similar metals from (C.St A516) Or (St.St 316L). The third parts deals with welding of dissimilar weldments (C.St And St.St) by two processes, gas tungsten are welding (GTAW) and shielded metal are welding (SMAW). The results indicated that the spread of carbon from low carbon steel to the welding zone in the case of welding stainless steel elect pole (E309L) led to Configuration Carbides and then high hardness the link to high values compared with the base metal. In most similar weldments showed hardness of the welding area is higher than the hardness of the base metal. The electrode (E309L) is the most suitable to welding dissimilar metals from (C.St A516 With St.St 316L). The results also showed that the method of welding (GTAW) were better than the method of welding (SMAW) in dissimilar welded joints (St.St 316L with C.St A516) in terms of irregular shape and integrity of the welding defects, as well as characterized this weldments the high-lift and resistance ductility good when using the welding conditions are similar.

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CLC 18.10LN

Alloy Digest ◽

10.31399/asm.ad.ss0950 ◽

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.

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REMANIT 4306

Alloy Digest ◽

10.31399/asm.ad.ss0679 ◽

1997 ◽

Vol 46 (4) ◽

Keyword(s):

Stainless Steel ◽

Corrosion Resistance ◽

High Temperature ◽

Austenitic Stainless Steel ◽

Cold Working ◽

Heat Treating ◽

Operating Conditions ◽

Low Carbon ◽

Corrosion Resistant ◽

Temperature Performance

Abstract Remanit 4306 is a low-carbon chromium nickel austenitic stainless steel that is superior in corrosion resistance to type 302 (see Alloy Digest SS-99, revised September 1998). Due to its low carbon content, Remanit 4306 is intergranular corrosion resistant under continuous operating conditions up to 350 C (652 F). This grade is particular suitable for high degrees of cold working and for sequential drawing. This datasheet provides information on composition, physical properties, elasticity, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, and joining. Filing Code: SS-679. Producer or source: Thyssen Stahl AG.

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