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- W2373104057 abstract "Pie-shaped 20CrMnTi(φ30 mm× 3 mm) processed by high-pressure torsion(HPT) was studied by finite element method(FEM),the distributing and the variational trend of strain in HPT process were analyzed.Microstructure and microhardness of 4 regions(the center,5 mm away from center,10 mm away from center,15 mm away from center) on the end surface of undeformed and deformed specimens were examined.The results indicate that HPT can effectively refine the microstructure.Vickers hardness reaches the biggest value(2866.5 MPa) in the region of 5 mm away from center,improves by 83.0%compared with that of the original structure.The strain-effective and microhardness of different regions in the specimen are different,the centerregion is smallest,the cornerregion is bigger,the middle region is biggest." @default.
- W2373104057 created "2016-06-24" @default.
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- W2373104057 date "2010-01-01" @default.
- W2373104057 modified "2023-09-28" @default.
- W2373104057 title "FEM and Experiment on Pie-shaped 20CrMnTi by High-pressure Torsion" @default.
- W2373104057 hasPublicationYear "2010" @default.
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