TITLE

A comparison of the ideal strength between L12Co3(Al,W) and Ni3Al under tension and shear from first-principles calculations

AUTHOR(S)
Yun-Jiang Wang; Chong-Yu Wang
PUB. DATE
June 2009
SOURCE
Applied Physics Letters;6/29/2009, Vol. 94 Issue 26, p261909
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The ideal strengths of L12Co3(Al,W) in comparison with Ni3Al are investigated using the first-principles method. Results for the stress-strain relationships, ideal tensile and shear strengths are presented. The calculated elastic properties agree well with the experimental observations. Co3(Al,W) is found to have larger moduli and higher strengths, but less ductile than Ni3Al. The electronic structures indicate the directional covalentlike Co–W bonding through d-d hybridization is the origin of excellent mechanical properties of Co3(Al,W).
ACCESSION #
42961914

 

Related Articles

  • Bending Strength and Modulus of Elasticity of Squares with Wane as Compared with Round Timber of Scots Pine (Pinus sylvestris). Vestøl, Geir I.; Høibø, Olav // Forest Products Journal;Jan2010, Vol. 60 Issue 1, p40 

    A comparison of bending strength and modulus of elasticity (MOE) of squares with wanes to round timber was performed as part of a project on the use of round Scots pine (Pinus sylvestris L.) timber in structural frameworks. The study was based on 125 squares and 124 round logs from two sites at...

  • Limiting state of an elastoplastic orthotropic plate with a periodic system of collinear cracks. Bogdanova, O. S. // International Applied Mechanics;May2007, Vol. 43 Issue 5, p539 

    A modified Dugdale model is used to study the fracture of an orthotropic elastoplastic plate with a periodic system of rectilinear cracks. The material of the plate obeys a general yield criterion. The general form of solution is obtained in terms of Kolosov-Muskhelishvili potentials. The size...

  • Antiplane strain of a body undergoing large-rotations. Bondar', V. D. // Journal of Applied Mechanics & Technical Physics;May2007, Vol. 48 Issue 3, p460 

    Antiplane strain of a cylindrical elastic body undergoing large rotations under surface load in the absence of body loads is studied. The form of the elastic potential corresponding to this strain is found. The stresses, the strains, and the displacement are expressed in terms of pressure and...

  • Antiplane strain under post-critical deformation in the problem on equilibrium semi-infinite crack. Part II. Chanyshev, A. // Journal of Mining Science;Mar2010, Vol. 46 Issue 1, p1 

    The paper analyzes some of the known solutions of the problem about loading a massive body with an antiplane half-infinite crack under post-critical deformation and describes new particular solutions. Four boundary conditions are formulated for the interface of the elastic and post-critical...

  • A Method of Solution for the 3D Problem of the Elasticity Theory in Displacements. Borodachev, N. M.; Astanin, V. V. // Strength of Materials;May/Jun2003, Vol. 35 Issue 3, p260 

    A new method of solution for the 3D problem of the elasticity theory in displacements is proposed. The method is based on the Tedone equilibrium equation. In contrast to the Betti and Cerrutti�Boussinesq methods, the described approach does not require volume expansion to be predetermined....

  • Buckling Strength of Near-Cylindrical Shells. Gavrilenko, G. D.; Matsner, V. I.; Sitnik, A. S. // Strength of Materials;May/Jun2003, Vol. 35 Issue 3, p236 

    A procedure is proposed whereby critical loads for elastic near-cylindrical shells are determined with the use of equations in terms of displacements. An analytical expression has been derived for the assessment of critical stresses in momentless smooth shells. A contribution of individual...

  • Nonlinear Finite Element Analysis of Rubber Composite Shells. Ferreira, A. J. M.; S�, J. M. A. C.; Marques, A. T. // Strength of Materials;May/Jun2003, Vol. 35 Issue 3, p225 

    A finite-element solution for rubber composite shells is presented. Sandwich laminates with a rubber core have also been studied. Incompressibility of a rubber matrix and complexity of composite shells bring forth the need for a sound numerical model to describe the behavior of such engineering...

  • Stress state of a transversely isotropic magnetoelectroelastic body with a plane crack under antisymmetric loads. Kirilyuk, V. // International Applied Mechanics;Oct2008, Vol. 44 Issue 10, p1106 

    The static equilibrium of a transversely isotropic magnetoelectroelastic body with a plane crack of arbitrary shape in the isotropy plane under antisymmetric mechanical loading is studied. The relationships between the stress intensity factors (SIFs) for an infinite magnetoelectroelastic body...

  • Influence of geometrical parameters on the stress state of longitudinally corrugated elliptic cylindrical shells. Grigorenko, Ya.; Grigorenko, A.; Zakhairichenko, L. // International Applied Mechanics;Feb2009, Vol. 45 Issue 2, p187 

    An approach developed to solve static problems for longitudinally corrugated elliptic cylindrical shells is used to analyze the influence of their geometric parameters and thickness on the stress�strain state. The circumferential distribution of stresses and displacements is analyzed for...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics