Ultimate strength of duplex stainless steel plates under uniaxial compression

2010 ◽  
Vol 3 (2) ◽  
pp. 90-99
Author(s):  
Takao Miyoshi ◽  
Yasuhiro Miyazaki ◽  
Satoshi Nara
Keyword(s):  
Stainless Steel ◽  
Duplex Stainless Steel ◽  
Ultimate Strength ◽  
Uniaxial Compression ◽  
Steel Plates

scholarly journals The effect of laser welding power on the properties of the joint made of 1.4462 duplex stainless steel

2018 ◽  
Vol 10 (1) ◽  
pp. 168781401775194 ◽  
Author(s):  
Robert Sołtysiak ◽  
Tomasz Giętka ◽  
Agnieszka Sołtysiak
Keyword(s):  
Stainless Steel ◽  
Duplex Stainless Steel ◽  
Laser Power ◽  
Gas Flow ◽  
Weld Zone ◽  
Steel Plates ◽  
Joint Surface ◽  
Welding Parameters ◽  
Butt Welding ◽  
Protective Gas

The butt welding of 1.4462 (2205) duplex stainless steel plates with thickness of 4 mm under various welding parameters was achieved by Nd:YAG laser type without the use of the filler material. Welding parameters such as welding power (kW) and the focus distance from the joint surface (mm) were changed. The Ar 5.0 protective gas flow and welding speed were the same for all the tests and were 20 L/min and 0.5 m/min, respectively. The weld shape, weld macrostructure, microstructure, strength and hardness, and the content of the ferrite in the weld zone, heat-affected zone, and base metal were emphatically investigated. The test results showed that increase in laser power increases the weld zone area. For the weld samples, a better ferrite/austenite ratio was obtained by focusing the laser beam on the sheet surface. Furthermore, the largest elongation from strength test has been observed for the weld samples made with laser power of 2.0 kW.

scholarly journals Fe and Cr phase separation in super and hyper duplex stainless steel plates and welds after very short aging times

2021 ◽  
pp. 110055
Author(s):  
Vahid A Hosseini ◽  
Mattias Thuvander ◽  
Kristina Lindgren ◽  
James Oliver ◽  
Nicklas Folkeson ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Phase Separation ◽  
Duplex Stainless Steel ◽  
Steel Plates

scholarly journals X-Ray diffraction technique applied to study of residual stresses after welding of duplex stainless steel plates

2014 ◽  
Vol 17 (suppl 1) ◽  
pp. 64-69 ◽  
Author(s):  
Vladimir Ivanovitch Monin ◽  
Ricardo Tadeu Lopes ◽  
Sergio Nolêto Turibus ◽  
João C. Payão Filho ◽  
Joaquim Teixeira de Assis
Keyword(s):  
Stainless Steel ◽  
Residual Stresses ◽  
Duplex Stainless Steel ◽  
Steel Plates ◽  
X Ray Diffraction ◽  
X Ray

scholarly journals Welding of Large Thickness Super Duplex Stainless Steel: Microstructure and Properties

Metals ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1184
Author(s):  
Maria Asuncion Valiente Bermejo ◽  
Daniel Eyzop ◽  
Kjell Hurtig ◽  
Leif Karlsson
Keyword(s):  
Stainless Steel ◽  
Duplex Stainless Steel ◽  
Arc Welding ◽  
Gas Metal Arc Welding ◽  
Steel Plates ◽  
Super Duplex Stainless Steel ◽  
Steel Microstructure ◽  
Large Thickness ◽  
Time Required ◽  
Interpass Temperature

In this study, Submerged Arc Welding (SAW) and Gas Metal Arc Welding (GMAW) processes were used in multi-pass welding of 33 mm thickness super duplex stainless steel plates. Recommended and higher than recommended arc energy and interpass temperatures were used. Both GMAW and SAW processes were able to produce large thickness weldments meeting the microstructural, mechanical, and corrosion resistance requirements, and also when using higher than recommended arc energy and interpass temperature. It was possible to reduce the number of welding passes by half when using higher than recommended arc energy and interpass temperature. The SAW process needed only half of the welding time required for the GMAW process to produce a weldment with nearly the same number of weld passes, when using recommended arc energy and interpass temperature. Based on the results of this investigation, the practical recommendations for welding large thicknesses should be revised and updated.

scholarly journals Computational modeling of a 3D matrix of duplex stainless steel and its ultimate strength in function of the sigma phase evolution

2021 ◽  
Author(s):  
Ana Gabriela Conceição dos Santos ◽  
Nathan Fernandes Ignácio ◽  
Maisa Silva Fernandes ◽  
Diego Magalhães Baía ◽  
Fernanda Nascimento Moreira ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Computational Modeling ◽  
Duplex Stainless Steel ◽  
Ultimate Strength ◽  
Sigma Phase ◽  
Phase Evolution ◽  
3D Matrix

Identification by Electron Microdiffraction of Intermetallic Phases in a Duplex Stainless Steel

1990 ◽  
Vol 48 (2) ◽  
pp. 494-495
Author(s):  
A. Redjaïmia ◽  
J.P. Morniroli ◽  
G. Metauer ◽  
M. Gantois
Keyword(s):  
Stainless Steel ◽  
Duplex Stainless Steel ◽  
Convergent Beam Electron Diffraction ◽  
Intermetallic Phases ◽  
Small Particles ◽  
Parallel Beam ◽  
Diffraction Patterns ◽  
Average Size ◽  
Convergent Beam ◽  
Electron Microdiffraction

2D and especially 3D symmetry information required to determine the crystal structure of four intermetallic phases present as small particles (average size in the range 100-500nm) in a Fe.22Cr.5Ni.3Mo.0.03C duplex stainless steel is not present in most Convergent Beam Electron Diffraction (CBED) patterns. Nevertheless it is possible to deduce many crystal features and to identify unambiguously these four phases by means of microdiffraction patterns obtained with a nearly parallel beam focused on a very small area (50-100nm).From examinations of the whole pattern reduced (RS) and full (FS) symmetries the 7 crystal systems and the 11 Laue classes are distinguished without ambiguity (1). By considering the shifts and the periodicity differences between the ZOLZ and FOLZ reflection nets on specific Zone Axis Patterns (ZAP) which depend on the crystal system, the centering type of the cell and the glide planes are simultaneously identified (2). This identification is easily done by comparisons with the corresponding simulated diffraction patterns.

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