Grain-size dependent elastic-plastic deformation behaviour of inconel 625 alloy studied by in-situ neutron diffraction

2021 ◽  
Vol 138 ◽  
pp. 107340
Author(s):  
Yubi Gao ◽  
Yutian Ding ◽  
Haifeng Li ◽  
Hongbiao Dong ◽  
Ruiyao Zhang ◽  
...  
Keyword(s):  
Plastic Deformation ◽  
Grain Size ◽  
Neutron Diffraction ◽  
Deformation Behaviour ◽  
Inconel 625 ◽  
Elastic Plastic ◽  
Size Dependent ◽  
Inconel 625 Alloy ◽  
In Situ Neutron Diffraction

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

2006 ◽  
Vol 524-525 ◽  
pp. 917-922 ◽  
Author(s):  
Ru Lin Peng ◽  
Yan Dong Wang ◽  
Guo Cai Chai ◽  
Nan Jia ◽  
Sten Johansson ◽  
...  
Keyword(s):  
Plastic Deformation ◽  
Stainless Steel ◽  
Neutron Diffraction ◽  
Grain Orientation ◽  
Super Duplex Stainless Steel ◽  
Lattice Strains ◽  
Duplex Steel ◽  
In Situ Neutron Diffraction ◽  
Phase Stresses

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.

Deformation Behaviour of TRIP Steel Monitoring by in-Situ Neutron Diffraction

2011 ◽  
Vol 465 ◽  
pp. 390-394 ◽  
Author(s):  
Jozef Zrník ◽  
Ondrej Muránsky ◽  
Petr Šittner ◽  
E.C. Oliver
Keyword(s):  
Neutron Diffraction ◽  
Trip Steel ◽  
Retained Austenite ◽  
Volume Fraction ◽  
Tensile Deformation ◽  
Deformation Behaviour ◽  
Tensile Load ◽  
Phase Evolution ◽  
In Situ Neutron Diffraction

The paper presents results of in-situ neutron diffraction experiments aimed on monitoring the phase evolution and load distribution in TRIP steel when subjected to tensile loading. Tensile deformation behaviour of TRIP steel with different initial microstructures showed that the applied tensile load is redistributed at the yield point and the harder retained austenite (Feγ) bears larger load then ferrite (Feα) matrix. After load partioning is finished, macroscopic yielding comes through simultaneous activity of the martensite transformation (in the austenite) and plastic deformation process in ferrite. The steel with higher volume fraction of retained austenite and less stronger ferrite appears to be a better TRIP steel having efficient structure for better plasticity purpose.

In Situ Neutron Diffraction Study on the Mechanical Behavior of an Ultra-Fine-Grained Steel

2006 ◽  
Vol 524-525 ◽  
pp. 639-644 ◽  
Author(s):  
Kai Xiang Tao ◽  
Hahn Choo ◽  
H. Li ◽  
Bjørn Clausen ◽  
Donald W. Brown ◽  
...  
Keyword(s):  
Grain Size ◽  
Neutron Diffraction ◽  
High Strength ◽  
Neutron Diffraction Study ◽  
Coarse Grained ◽  
Transformation Induced Plasticity ◽  
Fine Grained ◽  
High Elongation ◽  
In Situ Neutron Diffraction

The martensitic phase transformation in an ultra fine grained (UFG) TRIP (transformation induced plasticity) steel with combination of high strength and high elongation was investigated during room temperature tensile test using in situ neutron diffraction. Two types of specimens, namely coarse grained (grain size of about 50 μm) and ultra-fine-grained (grain size of about 350 nm) specimens were examined. The lattice strain evolution of the austenite and martensite phases was observed and the load partitioning between the phases was identified.

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