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

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

doi:10.1063/1.4916960

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

Journal Article · Fri Apr 03 00:00:00 EDT 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4916960· OSTI ID:1239623

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

Fort Wayne Metals Research Products Corp., Fort Wayne, IN (United States)
Argonne National Lab. (ANL), Argonne, IL (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. Here, a strong (010)α" fiber texture was formed at the expense of the (001)α" and (111)α" fiber textures. Above 400 MPa applied stress, (110)α" deformation twinning was triggered with a simultaneous stress relaxation in the (110)α" family and a slight increase in its texture strength in the loading direction.

View Accepted Manuscript (DOE)

Research Organization:: Argonne National Laboratory (ANL), Argonne, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)

Grant/Contract Number:: AC02-06CH11357

OSTI ID:: 1239623

Alternate ID(s):: OSTI ID: 22398813

Journal Information:: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 13 Vol. 106; ISSN 0003-6951

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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