Development of novel grain refiners for AZ91D magnesium alloys and their effect on hot tearing
.iii Lay Summary .iv Preface v List of Tables xiii List of Figures xiv List of Equations xxviii Acknowledgements xxix Dedication xxx Chapter 1: Introduction 1 Chapter 2: Literature Review 5 2.1 Magnesium and Magnesium Alloys 5 2.1.1 Aluminum Containing Mg Alloys 6 2.2 Grain Refinement 8 2.2.1 Solidification of Metals and Alloys 8 2.2.1.1.1 Homogeneous Nucleation 8 2.2.1.1.2 Heterogeneous Nucleation .10 2.2.2 Grain Refinement of Mg Alloys .11 2.2.2.1 Grain refinement of Aluminum Free Mg Alloys .12 2.2.2.2 Grain refinement of Aluminum Bearing Mg Alloys .12 2.2.2.2.1 Titanium Based Refiners .12 2.2.2.2.2 Carbon Based Refiners .14 2.3 Hot Tearing .15