Quantitative determination of secondary slip in copper single crystals deformed in tension

Basinski, Z. S.; Basinski, S.J.

doi:10.1080/14786430310001612184

Cited by 23 publications

(17 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…8a). The excess dislocation density within the high-density bands is in the range 6x10 13 -8x10 13 m -2 , and is roughly an order of magnitude above the background value, ~ 1x10 13 inside the orientation bands.…”

Section: Defect Patterns On the Y-facementioning

confidence: 92%

“…Single-crystal copper was chosen for this research as a prototype material whose deformation behavior has been extensively studied at the microscopic level [5][6][7][8][9][10][11][12][13][14][15][16]. While there has been little recent work on deformation patterns in the mesoscopic (>20 µm) and macroscopic regimes, the mesoscopic dislocation patterns in Cu were characterized in some detail through etch-pit studies done by Livingston [17,18] and Basinski [19] some time ago.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Mapping mesoscale heterogeneity in the plastic deformation of a copper single crystal

Magid

Florando

Lassila

et al. 2009

Philosophical Magazine

View full text Add to dashboard Cite

The work reported here is part of a 'multiscale characterization' study of heterogeneous deformation patterns in metals. A copper single crystal was oriented for single slip in the (111)[101] slip system and tested to ~10% strain in roughly uniaxial compression. The macroscopic strain field was monitored during the test by optical 'image correlation'. The strain field was measured on orthogonal surfaces, one of which (the x-face) was oriented perpendicular to [121] and contained the [101] direction of the preferred slip system. The macroscopic strain developed in an inhomogeneous pattern of broad, crossed shear bands in the x-face. One, the primary band, lay parallel to (111). The second, the 'conjugate' band, was oriented perpendicular to (111) with an overall (101) habit that contains no common slip plane of the fcc crystal. The mesoscopic deformation pattern was explored with selected area diffraction, using a focused synchrotron radiation polychromatic beam with a resolution of 1-3 µm. Areas within the primary, conjugate and mixed (primary + conjugate) strain regions of the x-face were identified and mapped for their orientation, excess defect density and shear stress. The mesoscopic defect structure was concentrated in broad, somewhat irregular primary bands that lay nominally parallel to (111) in an almost periodic distribution with a period of about 30 µm. These primary bands were dominant even in the region of conjugate strain. There were also broad conjugate defect bands, almost precisely perpendicular to the primary bands, that tended to bridge primary bands and terminate at them. The residual shear stresses were large (ranging to well above 500 MPa) and strongly correlated with the primary shear bands; interband stresses were small. The maximum resolved shear stresses within the primary bands were oriented out of the plane of the bands, and, hence, could not recover the dislocation structure in the bands. The maximum resolved shear stresses in the interband regions lay predominantly in {111} planes. The results are compared to the mesoscopic defect patterns found in Cu in etch pit studies done some decades ago, which also revealed a mesoscopic dislocation structure made up of orthogonal bands.

show abstract

Section: Defect Patterns On the Y-facementioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Mapping mesoscale heterogeneity in the plastic deformation of a copper single crystal

Magid

Florando

Lassila

et al. 2009

Philosophical Magazine

View full text Add to dashboard Cite

show abstract

“…On possible explanation, as mentioned in previous etch pit studies [12,13] , is that 'glide polygonization' occurs on the primary system where edge dislocations align to form a band perpendicular to the primary. Another possibility is that the slip orthogonal to the primary is composed of a composite of other slip systems [5,7,10] that deform in such a way that the net slip is orthogonal to the primary. Regardless of the origins, our data suggests that this orthogonal slip begins to occur even in the early part of the deformation, traditionally known as stage I.…”

mentioning

confidence: 99%

“…Although there has been experimental evidence that suggests that this classical theory is not entirely valid [4][5][6][7][8], most of the work was done in tension with samples that rotate during deformation due to the boundary conditions. In this study, single crystals samples were tested in compression using a unique testing apparatus, which was designed to minimize the constraints traditionally imposed during a tensile test.…”

mentioning

confidence: 99%

Multiple slip in copper single crystals deformed in compression under uniaxial stress

2007

View full text Add to dashboard Cite

“…al [2], established a method to compute the slip system activity based on the experimental deformation gradient matrix. Johnson [3], refined this method and applied it to copper single crystals deformed in tension, and recently, Basinski and Basinski [4] performed a detailed study applying the mathematical method developed by Chin to many different orientations of Cu single crystals. While the methodology used in these studies is very powerful, the accuracy of these studies is dependent upon the experimentally measured deformation gradient matrix.…”

Section: Introductionmentioning

confidence: 99%

Calculation of the slip system activity in deformed zinc single crystals using digital 3-D image correlation data

Florando

Rhee

Arsenlis

et al. 2006

Philosophical Magazine Letters

View full text Add to dashboard Cite

A 3-D image correlation system, which measures the full-field displacements in 3 dimensions, has been used to experimentally determine the full deformation gradient matrix for two zinc single crystals. Based on the image correlation data, the slip system activity for the two crystals has been calculated. The results of the calculation show that for one crystal, only the primary slip system is active, which is consistent with traditional theory. The other crystal however, shows appreciable deformation on slip systems other than the primary. An analysis has been conducted which confirms the experimental observation that these other slip system deform in such a manner that the net result is slip which is approximately one third the magnitude and directly orthogonal to the primary system.

show abstract

Quantitative determination of secondary slip in copper single crystals deformed in tension

Cited by 23 publications

References 10 publications

Mapping mesoscale heterogeneity in the plastic deformation of a copper single crystal

Mapping mesoscale heterogeneity in the plastic deformation of a copper single crystal

Multiple slip in copper single crystals deformed in compression under uniaxial stress

Calculation of the slip system activity in deformed zinc single crystals using digital 3-D image correlation data

Contact Info

Product

Resources

About