The interface character distribution of cold-rolled and annealed duplex stainless steel

2016 ◽  
Vol 118 ◽  
pp. 397-404 ◽  
Author(s):  
Xiaoying Fang ◽  
Wenhong Yin ◽  
Congxiang Qin ◽  
Weiguo Wang ◽  
K.H. Lo ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Duplex Stainless Steel ◽  
Character Distribution ◽  
Cold Rolled

scholarly journals Phase-Specific Strain Hardening and Load Partitioning of Cold Rolled Duplex Stainless Steel X2CrNiN23-4

Crystals ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 976
Author(s):  
Nicola Simon ◽  
Maximilian Krause ◽  
Paul Heinemann ◽  
Hannes Erdle ◽  
Thomas Böhlke ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Residual Stresses ◽  
Duplex Stainless Steel ◽  
Strain Hardening ◽  
Plastic Anisotropy ◽  
Mean Field ◽  
Numerical Approach ◽  
Specific Strain ◽  
Cold Rolled ◽  
Anisotropic Phase

Multi-phase materials often times consist of constituents with high contrasts in phase-specific mechanical properties. Here, even after homogeneous plastic deformation phase-specific residual stresses develop that may affect the components behaviour in service. For numerical simulation of phase-specific residual stresses, knowledge of the particular phase-specific strain hardening behaviour is essential. In this study, the strain hardening of ferrite and austenite in cold rolled duplex stainless steel of type X2CrNiN23-4 is investigated. By means of X-ray diffraction, the phase-specific load partitioning and residual stress evolution are analysed for uniaxial load application in three directions within the sheets plane, taking into account the sheet metals phase specific anisotropy. In order to assess the necessity for experimental determination of anisotropic phase specific behaviour, the strain hardening parameters, derived from only one loading direction, are implemented in a mean-field approach for prediction of phase-specific stresses. A simplified simulation approach is applied that only considers macroscopic plastic anisotropy and results are compared to experimental findings. For all investigated loading directions, it was observed that austenite is the high-strength phase. This load partitioning behaviour was confirmed by the evolution of phase-specific residual stresses as a result of uniaxial elasto-plastic loading. With the simplified and fast numerical approach, satisfying results for prediction of anisotropic phase-specific (residual) stresses are obtained.

scholarly journals Problems of Ferrite Content Determination

2020 ◽  
Vol 64 (2) ◽  
pp. 150-158
Author(s):  
Bálint Bögre ◽  
István Mészáros
Keyword(s):  
Stainless Steel ◽  
Duplex Stainless Steel ◽  
Ferrite Content ◽  
Super Duplex Stainless Steel ◽  
X Ray Diffraction ◽  
X Ray ◽  
Content Determination ◽  
Heat Treated ◽  
Δ Ferrite ◽  
Cold Rolled

In this work five different methods – AC magnetometer, DC magnetometer, Feritscope, EBSD and X-ray diffraction - were compared with each other. These methods were used to determine the δ-ferrite content of samples. The limits, disadvantages and advantages of the applied methods were analyzed. The tested material was 2507 type super-duplex stainless steel. The samples were cold rolled and heat treated to modify their ferrite content.

Evolution of interface character distribution in duplex stainless steel processed by cross-rolling and annealing

2018 ◽  
Vol 34 (11) ◽  
pp. 2160-2166 ◽  
Author(s):  
Ming Wang ◽  
Ting Xu ◽  
Yanli Zhu ◽  
Wenhong Yin ◽  
Hong Guo ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Duplex Stainless Steel ◽  
Cross Rolling ◽  
Character Distribution

Influence of the Shot Peening Process on the Fatigue Behaviour of Duplex Stainless Steel Reinforcing Bars

2007 ◽  
Vol 539-543 ◽  
pp. 4981-4986 ◽  
Author(s):  
Enrique Real ◽  
Cristina Rodríguez ◽  
A. Fernández Canteli ◽  
F.Javier Belzunce
Keyword(s):  
Plastic Deformation ◽  
Stainless Steel ◽  
Duplex Stainless Steel ◽  
Shot Peening ◽  
Fatigue Behaviour ◽  
Fatigue Properties ◽  
Reinforcing Bars ◽  
Cold Rolled ◽  
Hot Rolled

The influence of shot peening on the fatigue properties of duplex stainless steel reinforcing bars manufactured using both hot and cold rolled processes was studied. From determination of the S-N curves, the experimental results show that shot peening improves the fatigue behaviour of the re-bars, but that the improvement is much greater for the hot rolled bars. A more severe peening action capable of promoting greater plastic deformation of the bar surface needs to be used to improve the fatigue resistance of cold rolled corrugated bars.

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