Effect of equal-channel angular pressing on superplastic behavior of eutectic Pb–Sn alloy

Equal-channel angular pressing (ECAP) is a convenient processing method for refining the grain size of bulk materials to the submicrometer level. Metallic alloys processed by ECAP often exhibit excellent superplastic characteristics including superplasticity at high strain rates. This paper summarizes recent experiments designed to evaluate the occurrence of superplasticity in representative aluminum and magnesium alloys and in the Zn-22% Al eutectoid alloy.

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Superplastic behavior of the Al-Mg-Sc-Zr alloy with bimodal structure processed by equal channel angular pressing and subsequent rolling

10.1063/1.5131889 ◽

2019 ◽

Author(s):

E. Avtokratova ◽

O. Latypova ◽

O. Sitdikov ◽

M. Markushev

Keyword(s):

Equal Channel Angular Pressing ◽

Superplastic Behavior ◽

Bimodal Structure ◽

Angular Pressing ◽

Zr Alloy

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Achieving superplastic behavior in fcc and hcp metals processed by equal-channel angular pressing

Materials Science and Engineering A ◽

10.1016/j.msea.2007.06.090 ◽

2008 ◽

Vol 493 (1-2) ◽

pp. 104-110 ◽

Cited By ~ 32

Author(s):

Roberto B. Figueiredo ◽

Megumi Kawasaki ◽

Cheng Xu ◽

Terence G. Langdon

Keyword(s):

Equal Channel Angular Pressing ◽

Superplastic Behavior ◽

Angular Pressing

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Anelasticity and Structural Stability of ECAP Processed Al-Mg-Si Alloys Investigated by Mechanical Spectroscopy

Materials Science Forum ◽

10.4028/www.scientific.net/msf.503-504.835 ◽

2006 ◽

Vol 503-504 ◽

pp. 835-840 ◽

Cited By ~ 3

Author(s):

Stefano Amadori ◽

Luca Pasquini ◽

Ennio Bonetti ◽

Marcello Cabibbo ◽

C. Scalabroni ◽

...

Keyword(s):

Equal Channel Angular Pressing ◽

Young Modulus ◽

Relaxation Processes ◽

Structural Damping ◽

Mechanical Spectroscopy ◽

Superplastic Behavior ◽

High Background ◽

Angular Pressing ◽

Zr Addition ◽

Sc Addition

Mechanical spectroscopy was employed to investigate the microstructure evolution of a Zr-modified 6082 Al-Mg-Si alloy and the same alloy with Sc addition after ageing and following severe plastic deformation through equal channel angular pressing. Measurements of the internal friction and dynamic young modulus have been performed in isothermal and isochronal runs in the frequency range 0.1 - 104 Hz. The anelasticity spectra reveal in the temperature range 470-870 K both structural and anelastic relaxation processes. Two structural damping maxima connected with inverse temperature trend of the modulus occur in the alloys submitted to equal channel angular pressing, the first one is strongly suppresed by Sc and Zr addition. An anelastic relaxation peak whose strength depends on the nature and morphology of precipitates and dispersoids and on the deformation and ageing condition was observed in all samples investigated. The high background damping occurring before the first structural damping maximum is analyzed with reference to a superplastic behavior of the equal channel angular pressing processed alloys.

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