Measurement of elastic constants of monoclinic nickel-titanium and validation of first principles calculations

Journal Article · Mon May 27 00:00:00 EDT 2013 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4808040· OSTI ID:22162959

Stebner, A. P. ^[1]; Brown, D. W. ^[2]; Brinson, L. C. ^[1]

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1. Department of Mechanical Engineering, Northwestern University, Evanston, Illinois 60208 (United States)
2. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)

Polycrystalline, monoclinic nickel-titanium specimens were subjected to tensile and compressive deformations while neutron diffraction spectra were recorded in situ. Using these data, orientation-specific and macroscopic Young's moduli are determined from analysis of linear-elastic deformation exhibited by 13 unique orientations of monoclinic lattices and their relationships to each macroscopic stress and strain. Five of 13 elastic compliance constants are also identified: s{sub 11} = 1.15, s{sub 15} = -1.10, s{sub 22} = 1.34, s{sub 33} = 1.06, s{sub 35} = -1.54, all Multiplication-Sign 10{sup -2} GPa{sup -1}. Through these results, recent atomistic calculations of monoclinic nickel-titanium elastic constants are validated.

• OSTI ID: 22162959
• Journal Information: Applied Physics Letters, Vol. 102, Issue 21; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COMPRESSION STRENGTH
DEFORMATION
ELASTICITY
MONOCLINIC LATTICES
NEUTRON DIFFRACTION
NICKEL
NICKEL ALLOYS
POLYCRYSTALS
PRESSURE RANGE GIGA PA
SPECTRA
STRAINS
STRESSES
TENSILE PROPERTIES
TITANIUM
TITANIUM ALLOYS
VALIDATION
YOUNG MODULUS