Grain Size Effect on the Mechanical Behavior of Metastable Fe-23Cr-8.5Ni Alloy
AbstractAn Fe-23Cr-8.5Ni alloy was used as a model material to study the grain size effect on the mechanical behavior of metastable duplex metal. Alloy samples with different grain sizes ranging from 0.1 to 2 μm were prepared by cold-rolling and annealing. A structural refinement to about 0.1 μm results in a high yield strength but very limited ductility. A significant improvement of ductility occurred at the grain size of about 0.4 μm. A further increase in grain size results in a decreased strength and a slightly improved ductility. The alloy with a grain size of about 0.4 μm exhibits an excellent combination of strength and ductility, where the yield strength and tensile elongation are increased up to 738 MPa and 29% as compared to 320 MPa and 33% of a coarse-grained (about 2 μm) sample, respectively. The origin of the excellent mechanical properties was attributed to the unique deformation characteristics associated with the transformation induced plasticity and the development of back stress. View Full-Text
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Xie, L.; Wang, C.; Wang, Y.; Wu, G.; Huang, X. Grain Size Effect on the Mechanical Behavior of Metastable Fe-23Cr-8.5Ni Alloy. Metals 2019, 9, 734.
Xie L, Wang C, Wang Y, Wu G, Huang X. Grain Size Effect on the Mechanical Behavior of Metastable Fe-23Cr-8.5Ni Alloy. Metals. 2019; 9(7):734.Chicago/Turabian Style
Xie, Lin; Wang, Chunpeng; Wang, Yuhui; Wu, Guilin; Huang, Xiaoxu. 2019. "Grain Size Effect on the Mechanical Behavior of Metastable Fe-23Cr-8.5Ni Alloy." Metals 9, no. 7: 734.
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