Characteristically asymmetric X-ray line broadening, an indication of residual long-range internal stresses

Research output: Chapter in Book/Report/Conference proceedingChapter

15 Citations (Scopus)

Abstract

Dislocation distributions in plastically deformed metals, grain boundaries in polycrystals, second phase particles in alloys, or the variety of coexisting phases in steels are all heterogeneous microstructures. The constituents of a heterogeneous microstructure usually have different elastic and plastic properties. Plastic straining of a material possessing a heterogeneous microstructure can be described, in the simplest case, by a two-component composite model. Considering the two constituents of a composite as the hard and soft components, and assuming that they are strained in parallel, it can be shown that after unloading the two regions remain under the effect of residual internal stresses acting alternatively in the forward and backward direction relative to the applied stress, respectively. The locally varying residual internal stresses impose a locally alternating tetragonality which is manifested by a characteristically asymmetric X-ray line broadening. The characteristically asymmetric X-ray line profiles can be evaluated for the residual long-range internal stresses which are discussed in terms of the elastic-plastic properties of single phase metals and a superalloy.

Original languageEnglish
Title of host publicationMaterials Science Forum
EditorsR. Delhez, E.J. Mittemeijer
PublisherTrans Tech Publ
Pages23-44
Number of pages22
Volume166-169
Editionpt 1
Publication statusPublished - 1994
EventProceedings of the 3rd European Powder Diffraction Conference. Part 2 (of 2) - Vienna, Austria
Duration: Sep 25 1993Sep 28 1993

Other

OtherProceedings of the 3rd European Powder Diffraction Conference. Part 2 (of 2)
CityVienna, Austria
Period9/25/939/28/93

Fingerprint

Residual stresses
X rays
Plastics
Microstructure
Metals
Steel
Polycrystals
Composite materials
Unloading
Dislocations (crystals)
Superalloys
Grain boundaries

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Ungár, T. (1994). Characteristically asymmetric X-ray line broadening, an indication of residual long-range internal stresses. In R. Delhez, & E. J. Mittemeijer (Eds.), Materials Science Forum (pt 1 ed., Vol. 166-169, pp. 23-44). Trans Tech Publ.

Characteristically asymmetric X-ray line broadening, an indication of residual long-range internal stresses. / Ungár, T.

Materials Science Forum. ed. / R. Delhez; E.J. Mittemeijer. Vol. 166-169 pt 1. ed. Trans Tech Publ, 1994. p. 23-44.

Research output: Chapter in Book/Report/Conference proceedingChapter

Ungár, T 1994, Characteristically asymmetric X-ray line broadening, an indication of residual long-range internal stresses. in R Delhez & EJ Mittemeijer (eds), Materials Science Forum. pt 1 edn, vol. 166-169, Trans Tech Publ, pp. 23-44, Proceedings of the 3rd European Powder Diffraction Conference. Part 2 (of 2), Vienna, Austria, 9/25/93.
Ungár T. Characteristically asymmetric X-ray line broadening, an indication of residual long-range internal stresses. In Delhez R, Mittemeijer EJ, editors, Materials Science Forum. pt 1 ed. Vol. 166-169. Trans Tech Publ. 1994. p. 23-44
Ungár, T. / Characteristically asymmetric X-ray line broadening, an indication of residual long-range internal stresses. Materials Science Forum. editor / R. Delhez ; E.J. Mittemeijer. Vol. 166-169 pt 1. ed. Trans Tech Publ, 1994. pp. 23-44
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