Warm Forming of FCC Poly Crystals: The Effect of Grain Size under Different Forming Conditions on the Softening Behavior

C. Rehrl; Siegfried Kleber; Reinhard Pippan

doi:10.4028/www.scientific.net/MSF.715-716.360

Paper Titles

Influence of Annealing Process on Recrystallisation Behaviour of a Heavily Cold Rolled AISI 304L Stainless Steel on Ultrafine Grain Formation
p.334

Grain Size Control in the Weld Pool and Heat Affected Zone Using Holograms
p.340

Recrystallization in Ultra-Fine Grain Structures of AA3104 Alloy Processed by ECAP and HPT
p.346

Direct Observations of Cube Nucleation from Intergranular Cube Segments in Cold Rolled Al-Mn
p.354

Warm Forming of FCC Poly Crystals: The Effect of Grain Size under Different Forming Conditions on the Softening Behavior
p.360

Recrystallized Grain Size in Single Phase Materials
p.361

Stored Energy and Annealing Behavior of Heavily Deformed Aluminium
p.367

Recrystallization and Grain Growth in Ultra Fine Grained Materials Produced by High Pressure Torsion
p.373

A Model for Recovery Kinetics of Aluminum after Large Strain
p.374

HomeMaterials Science ForumMaterials Science Forum Vols. 715-716Warm Forming of FCC Poly Crystals: The Effect of...

Warm Forming of FCC Poly Crystals: The Effect of Grain Size under Different Forming Conditions on the Softening Behavior

Abstract:

Ingot breakdown is the most significant process for achieving high-quality billets in the cogging process. Especially microstructure evolution and grain refinement during the plastic deformation are of technical interest for the metal forming industry. To obtain refined and uniform microstructures after processing, it is necessary to understand deformation mechanisms as well as recovery-and recrystallization phenomena. Polycrystalline pure nickel and cast structured austenitic stainless steels were deformed by a compression test at different warm forming temperatures (800-1200°C) to investigate the influence of initial grain size, strain and strain rate on the structural refinement process. To get rid off static-and postdynamic softening processes the samples were immediately water quenched after deformation. By using the electron back scatter diffraction technique, the microstructural evolution and the crystallographic orientations were captured after deformation.