Ductile Titanium Alloy with Low Poisson's Ratio

Journal Article · Fri May 25 00:00:00 EDT 2007 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.98.216405· OSTI ID:20951404

Hao, Y L; Li, S J; Sun, B B; Sui, M L; Yang, R ^[1]

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1. Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016 (China)

We report a ductile {beta}-type titanium alloy with body-centered cubic (bcc) crystal structure having a low Poisson's ratio of 0.14. The almost identical ultralow bulk and shear moduli of {approx}24 GPa combined with an ultrahigh strength of {approx}0.9 GPa contribute to easy crystal distortion due to much-weakened chemical bonding of atoms in the crystal, leading to significant elastic softening in tension and elastic hardening in compression. The peculiar elastic and plastic deformation behaviors of the alloy are interpreted as a result of approaching the elastic limit of the bcc crystal under applied stress.

• OSTI ID: 20951404
• Journal Information: Physical Review Letters, Vol. 98, Issue 21; Other Information: DOI: 10.1103/PhysRevLett.98.216405; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BCC LATTICES
CHEMICAL BONDS
COMPRESSION
CRYSTALS
HARDENING
PLASTICITY
PRESSURE RANGE GIGA PA
SHEAR
STRESSES
TITANIUM ALLOYS