On the Development of Grain-Orientation-Dependent and Inter-Phase Stresses in a Super Duplex Stainless Steel under Uniaxial Loading

Ru Lin Peng; Yan Dong Wang; Guo Cai Chai; Nan Jia; Sten Johansson; Gang Wang

doi:10.4028/www.scientific.net/MSF.524-525.917

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HomeMaterials Science ForumMaterials Science Forum Vols. 524-525On the Development of Grain-Orientation-Dependent...

On the Development of Grain-Orientation-Dependent and Inter-Phase Stresses in a Super Duplex Stainless Steel under Uniaxial Loading

Abstract:

Microstresses due to intergranular and inter-phase interactions in an austenitic-ferritic super duplex steel (SAF 2507) under uniaxial compressive deformation have been studied by in-situ neutron diffraction experiments. Lattice strains of several hkl planes of austenite respective ferrite were mapped as a function of sample direction at a number of load levels during loading into the plastic regime and unloading. The analysis of the experimental results has shown that during loading both grain-orientation-dependent and inter-phase stresses were generated under plastic deformation that was inhomogeneous at the microstructural level. Residual stresses depending on the grain-orientation and phase have been found after unloading. The results also indicate stronger intergranular interactions among the studied hkl planes of austenite than those of ferrite.

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Materials Science Forum (Volumes 524-525)

Pages:

917-922

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.524-525.917

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Online since:

September 2006

Authors:

Ru Lin Peng, Yan Dong Wang, Guo Cai Chai, Nan Jia, Sten Johansson, Gang Wang

Keywords:

Duplex Stainless Steel, Grain-Orientation-Dependent Stresses, In Situ Loading, Interphase Stress, Lattice Strains, Neutron Diffraction

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