Deformation of a Ti-Nb alloy containing α'-martensite and omega phases

Cai, S.; Schaffer, J. E.; Ren, Y.

doi:10.1063/1.4916960

Title: Deformation of a Ti-Nb alloy containing α'-martensite and omega phases

Journal Article · Mon Mar 30 00:00:00 EDT 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4916960· OSTI ID:22398813

Cai, S.; Schaffer, J. E. ^[1]; Ren, Y. ^[2]

Fort Wayne Metals Research Products Corporation, 9609 Ardmore Ave., Fort Wayne, Indiana 46809 (United States)
Advanced Photon Source, Argonne National Laboratory, 9700 S. Cass Ave., Argonne, Illinois 60439 (United States)

Microscopic deformation of a Ti-17at. %Nb alloy with high fractions of α″-martensite and ω phases was studied by in-situ synchrotron X-ray diffraction. Textures, phase fractions, individual lattice strains, and peak intensities during deformation were studied. It is found that, to accommodate the external tensile strain, some of the α″ and ω grains were first transformed to the β-phase, which then continuously transformed to the α″-phase with chosen variants that effectively accommodate the deformation strain. A strong (010){sub α″} fiber texture was formed at the expense of the (001){sub α″} and (111){sub α″} fiber textures. Above 400 MPa applied stress, (110){sub α″} deformation twinning was triggered with a simultaneous stress relaxation in the (110){sub α″} family and a slight increase in its texture strength in the loading direction.

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OSTI ID:: 22398813

Journal Information:: Applied Physics Letters, Vol. 106, Issue 13; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951

Country of Publication:: United States

Language:: English

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75 CONDENSED MATTER PHYSICS
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DEFORMATION
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Title: Deformation of a Ti-Nb alloy containing α'-martensite and omega phases

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