Design and mechanical performance of fully dense nanocrystalline noble metals on the basis of Pd, Pd-Ag and Pd-Au [Elektronische Ressource] / Lilia Kurmanaeva

Design and Mechanical Performance of Fully Dense Nanocrystalline Noble Metals on the Basis of Pd, Pd-Ag and Pd-Au DISSERTATION zur Erlangung des akademischen Grades eines DOKTOR-INGENIEURS (DR.-ING.) der Fakultät für Ingenieurwissenschaften und Informatik der Universität Ulm von Lilia Kurmanaeva aus Salavat, Russia Gutachter: Prof. Dr. Hans-Jörg Fecht Prof. Dr. Ruslan Valiev Amtierender Dekan: Prof. Dr.-Ing. Klaus Dietmayer Ulm, 07.07.2011 Table of Contents 1 INTRODUCTION AND OBJECTIVES ............................................................................. 1 1.1 Introduction .................................................... 1 1.2 Objectives of present study ........................................................................................... 3 2 THE STATE OF THE ART ................................. 5 2.1 Synthesis of bulk nanocrystalline materials ................................ 5 2.1.1 Physical methods: Inert Gas Condensation (IGC) ................... 6 2.1.2 Chemical methods: Electrodeposition (ED)............................. 7 2.1.3 Solid state processing by severe plastic deformation (SPD) .................................... 8 2.2 Plastic deformation mechanisms in ultrafine grained and nanocrystalline fcc metals: results from experiments and molecular dynamic simulations ........................ 12 2.2.1 Slip of full dislocations ..............................