Formation of an ultrafine-grained structure during equal-channel angular pressing of a β-titanium alloy with low phase stability

2009 ◽  
Vol 60 (11) ◽  
pp. 1012-1015 ◽  
Author(s):  
W. Xu ◽  
X. Wu ◽  
M. Calin ◽  
M. Stoica ◽  
J. Eckert ◽  
...  
Keyword(s):  
Titanium Alloy ◽  
Equal Channel Angular Pressing ◽  
Phase Stability ◽  
Ultrafine Grained Structure ◽  
Angular Pressing ◽  
Ultrafine Grained

Effect of Texture and Microstructure on Ductility of a Mg-Al-Ca Alloy Processed by Equal Channel Angular Pressing

2008 ◽  
Vol 584-586 ◽  
pp. 375-379 ◽  
Author(s):  
Vladimir Serebryany ◽  
Mikhail V. Popov ◽  
A.S. Gordeev ◽  
V.N. Timofeev ◽  
L.L. Rokhlin ◽  
...  
Keyword(s):  
Low Temperature ◽  
Equal Channel Angular Pressing ◽  
Tensile Testing ◽  
True Strain ◽  
Basal Texture ◽  
Microstructure Formation ◽  
Ultrafine Grained Structure ◽  
Angular Pressing ◽  
Ultrafine Grained

Texture and microstructure formation during equal channel angular pressing (ECAP) of Mg-0.49%Al-0.47%Ca alloy were studied. The selected ECAP condition (route BC, N=6 passes, true strain ε ≈ 6.8, T=300°C) ensures an ultrafine-grained structure of the alloy and basal texture, inclined at an angle of 45-55º relative to the direction of extrusion. The expectation that such a change of the texture, together with the refinement of microstructure, should improve the low temperature ductility of this material was confirmed by tensile testing.

Microstructure and Properties of Ti Rods Produced by Multi-Step SPD

2006 ◽  
Vol 503-504 ◽  
pp. 763-768 ◽  
Author(s):  
V.V. Latysh ◽  
Irina P. Semenova ◽  
G.H. Salimgareeva ◽  
I.V. Kandarov ◽  
Yuntian T. Zhu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Yield Stress ◽  
Equal Channel Angular Pressing ◽  
Thermomechanical Treatment ◽  
Ultrafine Grained Structure ◽  
Annealed State ◽  
Angular Pressing ◽  
Ultrafine Grained ◽  
Cp Ti

This paper studies the effect of combined SPD treatment on microstructure and mechanical properties of semi-products out of CP Ti. The combined processing, consisting of equal-channel angular pressing and further thermomechanical treatment, produced ultrafine-grained rods out of Grade 2 CP Ti with a diameter of 6.5 mm and a length of up to 1 m. It was established that the formation of homogeneous ultrafine-grained structure in Ti rod with α-grain size of about 100 nm allowed to enhance yield stress by 200% in comparison with initial annealed state.

scholarly journals Ultrafine-Grained Structure Produced by Equal-Channel Angular Pressing

Materia Japan ◽  
1998 ◽  
Vol 37 (5) ◽  
pp. 376-376 ◽  
Author(s):  
Shogo Komura ◽  
Atsushi Ustunomiya ◽  
Zenji Horita ◽  
Minoru Nemoto ◽  
Minoru Furukawa ◽  
...  
Keyword(s):  
Equal Channel Angular Pressing ◽  
Ultrafine Grained Structure ◽  
Angular Pressing ◽  
Ultrafine Grained

Annealing behavior of ultrafine grained structure in low-carbon steel produced by equal channel angular pressing

2013 ◽  
Vol 581 ◽  
pp. 104-107 ◽  
Author(s):  
Galina G. Maier ◽  
Elena G. Astafurova ◽  
Hans J. Maier ◽  
Eugene V. Naydenkin ◽  
George I. Raab ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Equal Channel Angular Pressing ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Annealing Behavior ◽  
Ultrafine Grained Structure ◽  
Angular Pressing ◽  
Ultrafine Grained

Superplastic Behavior in Ultrafine-Grained Materials Produced by Equal-Channel Angular Pressing

2008 ◽  
Vol 579 ◽  
pp. 29-40 ◽  
Author(s):  
Cheng Xu ◽  
Megumi Kawasaki ◽  
Roberto B. Figueiredo ◽  
Zhi Chao Duan ◽  
Terence G. Langdon
Keyword(s):  
Equal Channel Angular Pressing ◽  
High Strain ◽  
Processing Method ◽  
Strain Rates ◽  
Bulk Materials ◽  
Superplastic Behavior ◽  
Angular Pressing ◽  
Ultrafine Grained ◽  
Ultrafine Grained Materials ◽  
Aluminum And Magnesium Alloys

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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