Microstructural evolution in copper subjected to severe plastic deformation: Experiments and analysis

Mishra, Avanish; Kad, Bimal K.; Grégori, Fabienne; Meyers, Marc A.

doi:10.1016/j.actamat.2006.07.008

Cited by 423 publications

(131 citation statements)

References 42 publications

Supporting

Mentioning

115

Contrasting

Unclassified

Order By: Relevance

“…5) show markedly different microstructures. Elongated grains are typical results of monotonic HPT straining [33] and ECAP [34] especially with deformation route C. It is well known that both the applied pressure (P) and the number of revolutions (N) influence the development of microhardness in HPT [5,7] and larger numbers of turns and/or higher pressure applied to disks can produce a more homogeneous microstructure.…”

Section: The Evolution Of Microstructure In Pure Al During Hptmentioning

confidence: 99%

Al–Mg–Cu based alloys and pure Al processed by high pressure torsion: The influence of alloying additions on strengthening

Zhang

Gao

Starink

2010

Materials Science and Engineering: A

View full text Add to dashboard Cite

The influence of alloying additions on strengthening of high pressure torsion (HPT) processed alloys was investigated using commercially pure Al (Al-1050 alloy) and five Al-(1-3)Mg-(0-4)Cu alloys (in wt%). Microhardness was measured on cross sections. For Al-1050 the microhardness reaches a peak at an effective strain of about 3 and subsequently decreases. The microhardness of Al-Mg-Cu alloys increases strongly and continuously with increasing equivalent strain. This workhardening rate is enhanced by increasing Mg content over the entire range of strain. Furthermore, the workhardening rates were higher in Cu-free and low Cu-containing (≤ 0.4%) Al-Mg alloys as compared to high Cucontaining Al-Mg alloy at strains less than 3. The results indicate that dislocation-solute and dislocation-cluster interactions play an important role in strengthening.

show abstract

Section: The Evolution Of Microstructure In Pure Al During Hptmentioning

confidence: 99%

Al–Mg–Cu based alloys and pure Al processed by high pressure torsion: The influence of alloying additions on strengthening

Zhang

Gao

Starink

2010

Materials Science and Engineering: A

View full text Add to dashboard Cite

show abstract

“…The former technique is based on powder metallurgy, whereas the latter is used in severe plastic deformation methods. Hydrostatic extrusion (HE) is one of the SPD methods that induces ultra-fine grain structures in metals or alloys without contamination and internal porosity [4]. The most meaningful advantage of the HE process is that there is no friction between the billet and the container wall, and thus the length of the billet is not limited as it is in conventional extrusion.…”

Section: Introductionmentioning

confidence: 99%

Microstructure Evolution and Texture Development in a Cu-8.5%AT. AL Material Subjected to Hydrostatic Extrusion

Jakubowska¹,

Zdunek²,

Kulczyk³

et al. 2016

Archives of Metallurgy and Materials

View full text Add to dashboard Cite

The aim of the present paper was to investigate microstructure and texture evolution of two single crystals and polycrystal of Cu-8.5%at.Al material. All of mentioned samples were deformed by HE to achieve true strain ε = 1.17. For microstructure analyzes observations by transmission electron microscope (STEM) were done. Crystalline size for samples after SPD were determine using XRD method. The global texture measurements were done using Bruker D8 Discover diffractometer equipped in Cr radiation. Microstructure investigations revealed nanocrystalline structure in single crystals with initial orientations <110> and <100> and polycrystalline Cu-8.5%at.Al material after SPD. The global texture measurements have shown the stability of initial orientation of <100> Cu-8.5%at.Al single crystal after HE, whereas the same SPD process strongly brakes up the orientation <110> Cu-8.5%at. Al single crystal.

show abstract

“…The strength of copper can be significantly increased by cold working [3][4][5], grain refinement [6][7][8][9][10][11], and the precipitation of nanoscale dispersoids [2,[11][12][13][14][15]. However, strengthening leads to a pronounced decrease in the electrical conductivity, due to increase in the dislocation density, grain boundaries, dispersoids, and solutes, which increase the scattering of conducting electrons [1].…”

Section: Introductionmentioning

confidence: 99%

Grain refinement in a Cu–Cr–Zr alloy during multidirectional forging

Shakhova

Yanushkevich

Fedorova

et al. 2014

Materials Science and Engineering: A

View full text Add to dashboard Cite

a b s t r a c tStructural changes during plastic deformation were studied in a Cu-0.3%Cr-0.5%Zr alloy subjected to multidirectional forging up to a total strain of 4 at the temperatures of 300 K and 673 K. The deformation behavior was characterized by a rapid increase in the flow stress at an early deformation followed by a steady-state flow at large strain. The development of the new ultrafine grains resulted from the progressive increase in the misorientations of the strain-induced low-angle boundaries, which evolve into high-angle boundaries with increasing cumulative strain through a strain-induced continuous reaction that is quite similar to continuous dynamic recrystallization. The formation of ultrafine grains was closely related to the development of geometrically necessary boundaries that is attributed to deformation banding. The grain refinement kinetics increased with an increase in the deformation temperature. At 673 K, the area fractions of the ultrafine grains with a size below 2 μm were 0.36 and 0.6 in the initially solution treated samples and the aged samples, respectively. However, the area fractions of the ultrafine grains did not exceed 0.2 at 300 K.

show abstract

Microstructural evolution in copper subjected to severe plastic deformation: Experiments and analysis

Cited by 423 publications

References 42 publications

Al–Mg–Cu based alloys and pure Al processed by high pressure torsion: The influence of alloying additions on strengthening

Al–Mg–Cu based alloys and pure Al processed by high pressure torsion: The influence of alloying additions on strengthening

Microstructure Evolution and Texture Development in a Cu-8.5%AT. AL Material Subjected to Hydrostatic Extrusion

Grain refinement in a Cu–Cr–Zr alloy during multidirectional forging

Contact Info

Product

Resources

About