Loss of interface coherency around a misfitting spherical inclusion

Quek, Siu Sin; Xiang, Yang; Srolovitz, David J.

doi:10.1016/j.actamat.2011.05.012

Cited by 35 publications

(28 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…of low angle grain boundaries [31], and loss of interface coherency around misfitting inclusions [32]. For the stresses in the vicinity of such a non-planar dislocation loop, or those at points not coplanar to a planar dislocation loop, the above mentioned classical asymptotic formulas obtained by Gavazza and Barnett [24] do not apply.…”

Section: Introductionmentioning

confidence: 93%

“…Our result can help in understanding the nature of complicated non-planar dislocation configurations and their dynamics under various kinds of motion of dislocations including glide, climb, and cross-slip of screw dislocations, e.g., in the processes of dislocation bypassing particles [27][28][29][30], migration of low angle grain boundaries [31], and loss of interface coherency around misfitting inclusions [32]. segment is calculated, based on which the Peach-Koehler force is determined (Equation (16)).…”

Section: Nearly Singular Behavior Of the Self-force Of A Dislocationmentioning

confidence: 99%

See 1 more Smart Citation

Asymptotic behaviors of the stress fields in the vicinity of dislocations and dislocation segments

Zhao

Wang

Xiang

2012

Philosophical Magazine

Self Cite

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 93%

Section: Nearly Singular Behavior Of the Self-force Of A Dislocationmentioning

confidence: 99%

Asymptotic behaviors of the stress fields in the vicinity of dislocations and dislocation segments

Zhao

Wang

Xiang

2012

Philosophical Magazine

Self Cite

View full text Add to dashboard Cite

“…The volume misfit (" V ) of the two phases can initially be accommodated elastically under preservation of a coherent interface. Upon prolonged annealing, leading to an increasing size of the second-phase particles, this misfit can no longer be accommodated fully elastically, and the interface can become semi or fully incoherent (Porter & Easterling, 1982;Quek et al, 2011;Meka et al, 2013;Geslin et al, 2014).…”

Section: Observations and Discussionmentioning

confidence: 99%

Misfit-induced changes of lattice parameters in two-phase systems: coherent/incoherent precipitates in a matrix

et al. 2016

View full text Add to dashboard Cite

Elastic accommodation of precipitation-induced or thermally induced misfit leads to lattice-parameter changes in crystalline multi-phase systems. Formulae for calculation of such misfit-induced lattice-parameter changes are presented for the aggregate (matrix + second-phase particles) and for the individual matrix and second phase, recognizing the occurrence of either coherent or incoherent diffraction by the matrix and second-phase particles. An overview and an (re)interpretation on the above basis is presented of published lattice-parameter data, obtained by X-ray diffraction analyses of aggregates of matrix plus secondphase particles. Examples for three types of systems consisting of a matrix with misfitting second-phase particles are dealt with, which differ in the origin of the misfit (precipitation or thermally induced) and in the type of diffraction (coherent or incoherent diffraction of matrix plus second-phase particles). The experimental data are shown to be in good to very good agreement with predictions according to the current treatment.

show abstract

“…The elastic expansion of the assembly as well as the large precipitate/matrix interfacial area associated with the nanosized platelets represents a state of elevated energy [17]. As is well known, coarsening of the microstructure, involving reduction of the interface area and loss of coherency, is a means of nature to reduce the energy of the system [18].…”

Section: Introductionmentioning

confidence: 99%

Diffraction-line shifts and broadenings in continuously and discontinuously coarsening precipitate-matrix systems: coarsening of initially coherent nitride precipitates in a ferrite matrix

et al. 2015

View full text Add to dashboard Cite

The initial precipitation of misfitting particles can be accompanied by elastic accommodation of the precipitate/matrix misfit leading to considerable matrix lattice dilatation/contraction and variable lattice microstrain. In this stage, the entire assembly of matrix and precipitate particles, as a whole, can diffract coherently. Upon aging of the system, relaxation of the accommodated misfit can occur by continuous and/or discontinuous coarsening of the precipitates. These processes are associated with distinctly different, characteristic diffraction phenomena, also involving a transition from coherent to incoherent diffraction of precipitates and matrix. For the case of, initially fully coherent, alloying element nitrides in a homogeneously nitrided ferrite matrix, these effects have been identified and analyzed, thus allowing tracing of misfitrelaxation processes.

show abstract

Loss of interface coherency around a misfitting spherical inclusion

Cited by 35 publications

References 19 publications

Asymptotic behaviors of the stress fields in the vicinity of dislocations and dislocation segments

Asymptotic behaviors of the stress fields in the vicinity of dislocations and dislocation segments

Misfit-induced changes of lattice parameters in two-phase systems: coherent/incoherent precipitates in a matrix

Diffraction-line shifts and broadenings in continuously and discontinuously coarsening precipitate-matrix systems: coarsening of initially coherent nitride precipitates in a ferrite matrix

Contact Info

Product

Resources

About