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Tensile behavior of orthorhombic α″-titanium alloy studied by in situ X-ray diffraction

Tensile behavior of orthorhombic α″-titanium alloy studied by in situ X-ray diffraction

Authors :
J. Z. Jiang
Kenny Ståhl
Jozef Bednarcik
H. Franz
Wang Xinhua
Hongbo Lou
Source :
Materials science and engineering / A 527, 6596-6600 (2010). doi:10.1016/j.msea.2010.06.065
Publication Year :
2010
Publisher :
Elsevier BV, 2010.

Abstract

The tensile behavior of a Ti–11%Zr–14%Nb–10%Sn alloy with pure orthorhombic α″ phase was studied by in situ X-ray diffraction using synchrotron radiation. It is found that no phase transformation happens during the whole tensile process. The “double-yielding” platforms of this alloy are indeed due to a low stress yielding (∼400 MPa) followed with a significant work-hardening before necking and fracture. In this process, the [0 2 2] orientation of grains more approaches the tensile direction and the [2 0 0] moves to the transverse, causing the lattice parameter a to be shrunk, and b and c elongated, and the formation of texture. The similar texture can also be produced upon cold rolling by which the yield strength of the α” phase is largely improved to be over 900 MPa.

Details

ISSN :
09215093
Volume :
527
Database :
OpenAIRE
Journal :
Materials Science and Engineering: A
Accession number :
edsair.doi.dedup.....44f01e4ecd7c21edcd89a61320a04db4
Full Text :
https://doi.org/10.1016/j.msea.2010.06.065