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

Anton Hohenwarter; Reinhard Pippan

doi:10.4028/www.scientific.net/MSF.667-669.671

Paper Titles

Research on Temperature Change and Microstructure Evolution of Bore in Steel Target Penetrated by Copper Jets
p.641

Cooperative Grain Boundary Sliding and Shear Banding at High Strains in Ultrafine Grained and Nanocrystalline Pd Alloys
p.649

Effect of Hydrostatic Pressure on the Microstructure and Mechanical Properties during and after High Pressure Torsion
p.657

SPD-Induced Grain Boundary Segregations and Superior Strength in UFG Al Alloys
p.665

An Overview on the Fracture Behavior of Metals Processed by High Pressure Torsion
p.671

The Effect of Grain Boundary Sliding and Strain Rate Sensitivity on the Ductility of Ultrafine-Grained Materials
p.677

Correlation of Physical Parameters with Steady-State Hardness of Pure Metals Processed by High-Pressure Torsion
p.683

Mechanical Properties of Al-6061 and an Al-6061 Metal Matrix Composite Processed by High-Pressure Torsion
p.689

Mechanical Characteristics of Zn-22% Al and Al-3% Mg Alloys Processed to High Strains by ECAP
p.695

HomeMaterials Science ForumMaterials Science Forum Vols. 667-669An Overview on the Fracture Behavior of Metals...

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

Abstract:

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.