In situ neutron diffraction study of α-γ Fe-Cr-Ni alloys under tensile deformation
Abstract
Neutron diffraction experiments were performed in situ upon tensile loading for five Fe-Cr-Ni alloys with different ferrite volume fractions ranging from 0 to 100%. The diffraction profiles were recorded along with the tensile deformation curves during temporary stops in a deformation machine (5 ks each) with the crosshead fixed. One reflection of each phase, (111) of austenite (γ) and (110) of ferrite (α), respectively, were measured simultaneously by using a position sensitive detector. Evolution of elastic lattice strains and dislocation densities in both constituent phases was evaluated from measured diffraction profiles as a function of external loading. Based on these experimental results, heterogeneous deformation behavior in the α-γ dual-phase alloys is discussed.
- Publication:
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Acta Materialia
- Pub Date:
- 2001
- DOI:
- 10.1016/S1359-6454(01)00147-1
- Bibcode:
- 2001AcMat..49.2471H
- Keywords:
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- In situ neutron diffraction;
- Fe-Cr-Ni alloys