Dynamics of twinning in metals and alloys

Lubenets, S. V.; Startsev, V. I.; Fomenko, L. S.

doi:10.1002/pssa.2210920102

Cited by 24 publications

(5 citation statements)

References 65 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The mixture of both <0001> fiber // ND and {0001} {hkil] ideal components are common and reflect the deformation part and the recrystallization part of the texture during high temperature extrusion or rolling. [23,24] This might be one part of the explanation of the texture variation observed in AZ31, AZ61, and AZ91. AM20 represents a texture type which is closest to the ideal fiber texture of round extruded magnesium (<10-10>) // ED).…”

Section: Discussionmentioning

confidence: 96%

“…Other strong textures one can find in case of overlapping of <0001> based fiber texture plus ideal component. [24] The higher the Al content in Mg-alloys, the lower the stacking fault energy and the more intensive twinning. The weakest texture is known, if the central pole in the (0002) pole figure shows a high scatter or in case of a tilt in two components as seen in WE43.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Hot Rectangular Extrusion Textures of Six Mg‐Alloys Via Neutron Diffraction

Brokmeier

2017

Adv Eng Mater

View full text Add to dashboard Cite

Due to the high quality and statistics utilizing neutron diffraction for texture analyses, the crystallographic texture variation of six Mg-alloys is described in detail (AM20-AZ31-AZ61-AZ91-ZC71-WE43). More or less in all cases, the crystallographic texture is composed of some ideal texture components such as {0001} <10-10> and {10-10} <11-20> and fiber components such as <0001> // ND and <10-10> // ED. There is a dependency of the existence and texture sharpness of texture components with alloying elements such as the amount of Al. ZC71 is special with one dominating texture component {10-10} <11-20>. WE43 shows the split of the central pole in the basal pole figure but texture components are identical to other alloys without the tilt.

show abstract

Section: Discussionmentioning

confidence: 96%

Section: Discussionmentioning

confidence: 99%

Hot Rectangular Extrusion Textures of Six Mg‐Alloys Via Neutron Diffraction

Brokmeier

2017

Adv Eng Mater

View full text Add to dashboard Cite

show abstract

“…In our previous studies [1] we found that single crystals of In-Pb alloys containing 6 and 8 at. % Pb at temperatures T µ 180 K manifest the property of pseudoelasticity, i.e., reversibility of large plastic deformations.…”

Section: Introductionmentioning

confidence: 80%

Elastic shape memory effect in In-Pb alloys in the temperature range 0.48–180 K

2003

View full text Add to dashboard Cite

Pseudoelasticity caused by pseudotwinning in short-range ordered In-Pb alloys (6, 8 and 11.6 at. % Pb) is studied in the temperature range 0.48{180 K. The mechanical hysteresis parameters, namely, the thermodynamic stress ½ T which provides the reversibility of plastic deformation and the frictional stress ½ f which characterizes the resistance o¬ered by crystal lattice and its defects to twin boundaries motion are estimated. It is found that athermal processes determine the reversible deformation: the mechanical parameters ½ T and ½ f do not depend on temperature and strain rate. The stress ½ T increases and the stress ½ f decreases with increasing Pb content. One of the main conditions of the exhibition of superelasticity is the ful llment of the inequality ½ T > ½ f .

show abstract

“…Growth is strongly anisotropic due to the competing role of different mechanisms. The emitted twinning partials form highly mobile incoherent twin boundaries 1,6 , which commonly extend until they encounter obstacles like grain boundaries or other interfaces. The result is the formation of thin twin lamellae bounded by coherent twin interfaces.…”

Section: Introductionmentioning

confidence: 99%

Growth of deformation twins in tantalum via coherent twin boundary migration

Sandoval

Surh

Chernov

et al. 2013

Journal of Applied Physics

View full text Add to dashboard Cite

In order to investigate the process of twinning growth, the nucleation of twinning dislocation loops on the coherent boundary of a Tantalum twin superlattice is studied via a molecular dynamics approach. We get homogeneous nucleation rates by means of a stationarity test and the mean first-passage method. We study their dependence on driving force and temperature in a framework given by the Kolgomorov-Johnson-Mehl-Avrami (KJMA) theory. Correspondingly, the contribution to the twinning growth dictated by this nucleation mechanism, as compared to the pole mechanism, is discussed. The homogeneous loop nucleation and growth mechanism can be relevant to twinning in high strain-rate experiments as in shock waves.

show abstract

Dynamics of twinning in metals and alloys

Cited by 24 publications

References 65 publications

Hot Rectangular Extrusion Textures of Six Mg‐Alloys Via Neutron Diffraction

Hot Rectangular Extrusion Textures of Six Mg‐Alloys Via Neutron Diffraction

Elastic shape memory effect in In-Pb alloys in the temperature range 0.48–180 K

Growth of deformation twins in tantalum via coherent twin boundary migration

Contact Info

Product

Resources

About