Elastic Stiffness Coefficients of Iron from 77° to 673°K

Lord, Arthur E.; Beshers, D. N.

doi:10.1063/1.1703098

Cited by 86 publications

(24 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The variation is 5.1 to 6.1 km s À1 with the experimental elastic constants measured at 595 K [31]. Thus, the front is supersonic in character, i.e.…”

Section: Cascade Dynamicsmentioning

confidence: 97%

On the origin of large interstitial clusters in displacement cascades

Calder

Bacon

Barashev

et al. 2010

Philosophical Magazine

142

107

View full text Add to dashboard Cite

Displacement cascades with wide ranges of primary knock-on atom (PKA) energy and mass in iron were simulated using molecular dynamics. New visualisation techniques are introduced to show how the shock-front dynamics and internal structure of a cascade develop over time. These reveal that the nature of the final damage is determined early on in the cascade process. We define a zone (termed 'spaghetti') in which atoms are moved to new lattice sites and show how it is created by a supersonic shockfront expanding from the primary recoil event. A large cluster of selfinterstitial atoms can form on the periphery of the spaghetti if a hypersonic recoil creates damage with a supersonic shock ahead of the main supersonic front. When the two fronts meet, the main one injects atoms into the lowdensity core of the other: these become interstitial atoms during the rapid recovery of the surrounding crystal. The hypersonic recoil occurs in less than 0.1 ps after the primary recoil and the interstitial cluster is formed before the onset of the thermal spike phase of the cascade process. The corresponding number of vacancies is then formed in the spaghetti core as the crystal cools, i.e. at times one to two orders of magnitude longer. By using the spaghetti zone to define cascade volume, the energy density of a cascade is shown to be almost independent of the PKA mass. This throws into doubt the conventional energy-density interpretation of an increased defect yield with increasing PKA mass in ion irradiation.

show abstract

“…The variation is 5.1 to 6.1 km s À1 with the experimental elastic constants measured at 595 K [31]. Thus, the front is supersonic in character, i.e.…”

Section: Cascade Dynamicsmentioning

confidence: 97%

On the origin of large interstitial clusters in displacement cascades

Calder

Bacon

Barashev

et al. 2010

Philosophical Magazine

142

107

View full text Add to dashboard Cite

show abstract

“…Sutherland [117] suggested eighty years ago that reduced shear modulus G(T)/G(O) plotted versus reduced temperature T/TIII gave a universal curve for all metals and that G becomes zero at T= Tm. While Sutherland's correlation of reduced G's remains valid and valuable, it is now known that G need not vanish at the melting point [118].…”

Section: ) Andmentioning

confidence: 99%

Elastic Properties of Metals and Alloys, I. Iron, Nickel, and Iron-Nickel Alloys

Ledbetter¹,

Reed²

1973

Journal of Physical and Chemical Reference Data

368

161

View full text Add to dashboard Cite

A comprehensive compilation is ~ven of elastic properties of iron-nickel alloys. When sufficient data exist, preferred values are recommended_ This compilation covers, besides pure iron and pure nickel, the entire binary composition range, both b.c_c. and f.c.c. phases. Elastic constants included are: Young's modulus, shear modulus, bulk modulus (reciprocal compressibility), Poisson's ratio, and singlecrystal elastic stiffnesses, both second-order and higher-order. Data are compiled for variation of ela~tic com;tant<;. with rompo!>.ition, tpmpprlltllre, prp!>.!>.nrp., magnetic neld. mechanical deformation.annealing, and crystallographic transitions. An overview is given f~om the vantage points of the electron theory ·of m.etals, elasticity theory, and crystallographic theory. Also included are discussions of isothermal and adiabatic elastic constants, interrelationships among engineering elastic constants, computation of the latter from single-crystal elastic stiffnesses, and similar topics. Where key data have not been measured, they were generated if possible from existing data using standard formulae. Other gaps, both theoretical and experimental, in the elastic properties of iron-nickel alloys are indicated. A few theoretical results are included where experimental data are nonexistent or scarce. A semantic scheme is proposed for distinguishing elastic constants of solids.

show abstract

“…The elastic constants along <110> direction of e 110 and ν 110 represent Young's modulus (223.5 GPa) and Poisson's ratio (0.273), respectively, which are obtained from the stiffness of a single crystal of the ferrite [13] through the Kröner model [14]. Prior to performing the line-profile analysis, we evaluated the effect of the energy resolution of the Ge-SSD and the scattering angle on the resolution in k-space.…”

Section: Methodsmentioning

confidence: 99%