Magnesium Technology 2020 (eBook)

Preface 5
Contents 7
About the Editors 12
Session Chairs 15
Reviewer Pool 16
Part I Keynote Session 17
1 Twin Transmission Across Grain Boundaries in Mg 18
2 Hierarchically Structured Ultrafine Grained Magnesium Alloys 21
3 Multistage Fatigue (MSF) Modeling of Magnesium in a Corrosion Environment 26
4 Novel Texture Controlling of Mg Alloys 28
Part II Alloy Development 29
5 Design of Ductile Rare-Earth-Free Magnesium Alloys 30
6 Microstructure Evolution and Precipitation Strengthening in Ca-Containing Mg-Rare Earth Alloys 36
7 A Die-Cast Magnesium Alloy for Applications at Elevated Temperatures 42
8 Effect of Gd and Nd Additions on the Thermo-Mechanical Response of a MgMn Alloy 48
9 Development of Ultra Lightweight, Corrosion Resistant Mg Alloys 54
Part III Alloy Design and Solidification 60
10 Insights on Solidification of Mg and Mg–Al Alloys by Large Scale Atomistic Simulations 61
11 Two-Stage Settling Approach to Purify Mg Alloy 64
12 CALPHAD Modeling and Microstructure Investigation of Mg–Gd–Y–Zn Alloys 69
13 Intermetallic Phase Formation in Mg–Ag–Nd (QE) and Mg–Ag–Nd–Zn (QEZ) Alloys 78
14 Investigation on the Microstructure and Mechanical Properties of Mg–Gd–Nd Ternary Alloys 86
15 Recrystallization Effects on the Forming Behaviour of Magnesium Alloy Sheets with Varied Calcium Concentration 93
16 Towards the Development of High Ductility Mg–Al Based Alloys Through Second-Phase Refinement with Trace Yttrium Additions 101
17 Design of Heat-Dissipating Mg–La–Zn Alloys Based on Thermodynamic Calculations 107
18 Effects of Zn Additions on the Room Temperature Formability and Strength in Mg–1.2Al–0.5Ca–0.4Mn Alloy Sheets 111
Part IV Fundamentals, Mechanical Behavior, Twinning, Plasticity, and Texture I 118
19 An Investigation into the Role of Dislocation Climb During Intermediate Temperature Flow of Mg Alloys 119
20 Deviations from Theoretical Orientation Relationship Along Tensile Twin Boundaries in Magnesium 127
21 The Role of Faceting in {1012} Twin Nucleation 133
22 In Situ TEM Investigation of ?c+a?Dislocations in Magnesium 139
23 Full-Field Crystal Plasticity Modeling of {1012} Twin Nucleation 144
24 The Incorporation of Discrete Deformation Twins in a Crystal Plasticity Finite Element Framework 150
25 On the Load Multiaxiality Effect on the Cyclic Behaviour of Magnesium Alloys 153
Part V Thermomechanical Processing 162
26 Deformation Driven Precipitation in Binary Magnesium Alloys 163
27 Effect of Second Phase Particle Size on the Recrystallized Microstructure of Mg–Al Alloys Following ECAE Processing 166
28 Relating Texture and Thermomechanical Processing Variables in Mg–Zn–Ca Alloys 173
29 Variation of Extrusion Process Parameter for the Magnesium Alloy ME21 179
30 Asymmetric Rolling of TZ73 Magnesium Alloy to Improve Its Ductility 187
31 Friction Stir Processing of Magnesium Alloy with Spiral Tool Path Strategy 195
32 Joining Dissimilar Materials via Rotational Hammer Riveting Technique 204
Part VI Corrosion 210
33 Anomalous Hydrogen Evolution on Magnesium 211
34 Numerical Investigation of Micro-Galvanic Corrosion in Mg Alloys: Role of the Cathodic Intermetallic Phase Size and Spatial Distributions 213
35 The Corrosion Behavior of High Purity Mg According to Process History 220
36 Design of the Magnesium Composite with High Corrosion Resistance and High Deformability 226
37 Advanced Immersion Testing of Model Mg-Alloys for Biomedical Applications 230
38 Effect of 2 wt% Ag Addition on Corrosion Properties of ZK40 for Biodegradable Applications 238
39 Study of In Vitro Biodegradation Behavior of Mg–2.5Zn–xES Composite 248
40 Corrosion Behavior of Squeeze Cast Mg Alloy AM60-Based Hybrid Nanocomposite 254
Part VII Solidification and Production of Magnesium 261
41 Thermodynamic Descriptions of the Quaternary Mg–Al–Zn–Sn System and Their Experimental Validation 262
42 Investigation and Modelling of the Influence of Cooling Rates on the Microstructure of AZ91 Alloys 273
43 The Independent Effects of Cooling Rate and Na Addition on Hydrogen Storage Properties in Hypo-eutectic Mg Alloys 280
44 Producing High Purity Magnesium (99.99%) Directly by Pidgeon Process 289
45 Research on Properties of Prefabricated Pellets of Silicothermic Process After Calcination in Flowing Argon Atmosphere 293
46 Producing Pure Magnesium Through Silicothermic Under the Atmospheric Pressure 299
47 Effect of Temperature on Magnesium Vapor Condensation in Inert Carrier Gas 303
Part VIII Fundamentals, Mechanical Behavior, Twinning, Plasticity, and Texture II 309
48 Mapping Anisotropy and Triaxiality Effects in Magnesium Alloys 310
49 Cold Formability of Extruded Magnesium Bands 318
50 The Effect of Plastic Deformation on the Precipitation Hardening Behavior of Biodegradable Mg–Sr–Ca–Zn Based Alloys 324
51 Experimental Investigation of Raster Tool Path Strategy for Friction Stir Processing of Magnesium Alloy 329
52 Quantitative Relationship Analysis of Mechanical Properties with Microstructure and Texture Evolution in AZ Series Alloys 335
53 On the Influence of Twinning and Detwinning on the Deformation of Mg at the Micron Scale 342
54 An Investigation on the Microstructure and Mechanical Properties of the Hot-Dip-Aluminized-Q235/AZ91D Bimetallic Material Produced by Solid–Liquid Compound Casting 347
Part IX Poster Session 355
55 Effect of Zinc on Solidification and Aging Behaviour of Magnesium Alloys Containing Rare Earths 356
56 Influence of Manganese on Deformation Behavior of Magnesium Under Dynamic Loading 365
57 Microstructure and Hardness of Porous Magnesium Processed by Powder Metallurgy Using Polystyrene as the Space Holder 370
58 Correction to: Effects of Zn Additions on the Room Temperature Formability and Strength in Mg–1.2Al–0.5Ca–0.4Mn Alloy Sheets 375
Author Index 376
Subject Index 379