LXV. The development of deformation textures in metals.—<i>Part II</i>. Body-centred cubic metals

Calnan, E. A.; Clews, C. J. B.

doi:10.1080/14786445108561277

Cited by 76 publications

(13 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For contour plots of Schmid factors of non-primary slip systems, the reader is referred to the literature, e.g. [10,70,71].…”

Section: A4 Miscellaneousmentioning

confidence: 99%

Anomalous Slip - A Feature of High-Purity Body-Centred Cubic Metals

Seeger¹,

Wasserbäch²

2002

phys. stat. sol. (a)

View full text Add to dashboard Cite

The hitherto poorly understood phenomenon of anomalous slip in body-centred cubic (bcc) metal crystals, constituting a striking violation of Schmid's law of resolved shear stresses in limited ranges of temperature and crystallographic orientation of the stress axis, is shown to be a natural consequence of the fact that the slip planes of a 0 h111i=2 screw dislocations change from f110g at low temperatures to f112g at higher temperatures. Above the temperature T T of this change, which is responsible for the so-called lower bend of the flow-stress-temperature relationship, in the orientation range of anomalous slip the two slip systems with the largest resolved shear stress have different slip directions. The screw dislocations of these systems may avoid jog formation and generation of atomic defects by cross-slipping to the anomalous f110g plane. This mechanism accounts for the dependence of anomalous slip on temperature, crystallographic orientation, and purity. The variation from metal to metal is shown to be correlated with the elastic anisotropy. Mechanisms that might be responsible for this variation, in particular for the absence of anomalous slip in bcc iron, are discussed.

show abstract

“…For contour plots of Schmid factors of non-primary slip systems, the reader is referred to the literature, e.g. [10,70,71].…”

Section: A4 Miscellaneousmentioning

confidence: 99%

Anomalous Slip - A Feature of High-Purity Body-Centred Cubic Metals

Seeger¹,

Wasserbäch²

2002

phys. stat. sol. (a)

View full text Add to dashboard Cite

show abstract

“…In this case the alternating activity of two, respectively three glide systems leads to the formation of a 1 1 2 normal direction, if only {1 1 0} 1 1 1 slip systems are active, or to a 1 1 1 normal direction, if only {112} 1 1 1 slip systems are active. According to [9], where the same assumption concerning the stress state of rolling was made, the most preferred orientation developing during rolling should be (1 1 2)[1 1 0, . .…”

Section: Texture Evolution During Rolling Experimentsmentioning

confidence: 99%

Slip system determination by rolling texture measurements around the strength peak temperature in a Fe3Al-based alloy

Kobayashi

Zaefferer

Schneider

et al. 2004

Materials Science and Engineering: A

View full text Add to dashboard Cite

Texture measurements were carried out on a Fe-26Al-5Cr alloy that was deformed by warm rolling at temperatures above and below the stress anomaly temperature in order to obtain information about a possible change of slip systems around that temperature. Special attention was paid to the initial microstructure, temperature during rolling and recrystallisation problems. Textures were determined by automatic crystal orientation mapping (ACOM) using electron backscatter diffraction (EBSD), which allows separation of measurement data from recrystallised and unrecrystallised fractions in the microstructure. A clear difference in texture evolution appears above and below the stress anomaly temperature; the most preferred orientations after rolling at 600 and 400• C are ∼{5 5 7} 1 1 0 and ∼{1 1 1} 2 1 1 , respectively. This result suggests that the shear fraction of the active {1 1 2} 1 1 1 slip systems increases with respect to that of the {1 1 0} 1 1 1 slip systems with increasing temperature around the stress anomaly temperature.

show abstract

“…The direction of the effective stress exerted on any one crystal grain will therefore tend to move down the contour gradient in Fig. 5 towards directions such that multiple slip can occur simultaneously (see Calnan & Clews, 1950, 1951. When such multiple slip occurs, however, it is associated with little or no lattice rotation.…”

Section: Discussionmentioning

confidence: 99%