Simultaneous Improvement of Strength and Ductility in Al-Ag Alloys Processed by High-Pressure Torsion and Aging

2012 ◽  
pp. 1685-1690
Author(s):  
Seungwon Lee ◽  
Zenji Horita
Keyword(s):  
High Pressure ◽  
High Pressure Torsion ◽  
Strength And Ductility

scholarly journals High Strength and Ductility in Ball-Milled Titanium Powders Consolidated by High-Pressure Torsion

2010 ◽  
Vol 654-656 ◽  
pp. 1239-1242 ◽  
Author(s):  
Kaveh Edalati ◽  
Z. Horita ◽  
Hiroshi Fujiwara ◽  
Kei Ameyama ◽  
Masaki Tanaka ◽  
...  
Keyword(s):  
High Pressure ◽  
Ball Milling ◽  
High Pressure Torsion ◽  
High Strength ◽  
Ultrafine Grained Structure ◽  
Ultrafine Grained ◽  
Titanium Powders ◽  
Strength And Ductility

Pure Ti powders were subjected to ball milling and subsequently high-pressure torsion (HPT) for consolidation. It is found that a fully dense (99.9%) disc with ultrafine grained structure (~50-300 nm) was produced. The strength and ductility were well comparable to those of ball-milled Ti-6%Al-4%V powders after hot roll sintering.

An Overview on the Fracture Behavior of Metals Processed by High Pressure Torsion

2010 ◽  
Vol 667-669 ◽  
pp. 671-676 ◽  
Author(s):  
Anton Hohenwarter ◽  
Reinhard Pippan
Keyword(s):  
Fracture Toughness ◽  
High Pressure ◽  
Fracture Behavior ◽  
High Pressure Torsion ◽  
High Strength ◽  
High Fracture Toughness ◽  
High Fracture ◽  
Ultrafine Grained ◽  
Specimen Orientation ◽  
Strength And Ductility

Motivated by the large variety of enhanced properties of ultrafine and nanocrystalline materials such materials are under extensive investigation. Besides focusing on classical material parameters, like strength and ductility, the fracture toughness of these materials is also of great importance, especially when the damage tolerance is required. In this contribution an overview of the fracture behavior of different metals covering ultrafine-grained iron and nickel as well as a nanocrystalline steel processed via high pressure torsion (HPT) will be given. It will be shown that the specimen orientation can have a tremendous influence on the fracture behavior and toughness. Due to this toughness anisotropy an unexpectedly good combination of high strength and high fracture toughness can be achieved very often in these materials.

scholarly journals Improved Combination of Strength and Ductility in Zirconium-Added Al-Zn-Mg-Cu Alloy Processed with High-Pressure Torsion

2016 ◽  
Vol 57 (10) ◽  
pp. 1735-1740 ◽  
Author(s):  
Hiroyuki Kawabata ◽  
Ichiro Aoi ◽  
Keiichiro Oh-ishi ◽  
Takanori Nakagaki ◽  
Yoshihiro Shimizu ◽  
...  
Keyword(s):  
High Pressure ◽  
High Pressure Torsion ◽  
Cu Alloy ◽  
Strength And Ductility

scholarly journals Using Plane Strain Compression Test to Evaluate the Mechanical Behavior of Magnesium Processed by HPT

Metals ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 125
Author(s):  
Amanda P. Carvalho ◽  
Leonardo M. Reis ◽  
Ravel P. R. P. Pinheiro ◽  
Pedro Henrique R. Pereira ◽  
Terence G. Langdon ◽  
...  
Keyword(s):  
High Pressure ◽  
Plane Strain ◽  
High Pressure Torsion ◽  
Thin Sheet ◽  
Plane Strain Compression ◽  
Small Samples ◽  
Element Analysis ◽  
Custom Made ◽  
Stress And Strain Distribution ◽  
Strength And Ductility

There is a great interest in improving mechanical testing of small samples produced in the laboratory. Plane strain compression is an effective test in which the workpiece is a thin sheet. This provides great potential for testing samples produced by high-pressure torsion. Thus, a custom tool was designed with the aim to test 10 mm diameter discs processed by this technique. Finite element analysis is used to evaluate the deformation zone, stress and strain distribution, and the accuracy in the estimation of stress–strain curves. Pure magnesium and a magnesium alloy processed by high-pressure torsion are tested using this custom-made tool. The trends observed in strength and ductility agree with trends reported in the literature for these materials.

Intermixing of Fe and Cu on the Atomic Scale by High-Pressure Torsion as Revealed by Dc- and Ac-Squid Susceptometry

2020 ◽  
Author(s):  
Martin Stückler ◽  
Heinz Krenn ◽  
Lukas Weissitsch ◽  
Stefan Wurster ◽  
Reinhard Pippan ◽  
...  
Keyword(s):  
High Pressure ◽  
High Pressure Torsion ◽  
Atomic Scale
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