Friction Stir Processing of High Strength 7XXX Aluminum Alloys

Front Cover Friction Stir Welding of High-Strength 7XXX Aluminum Alloys Copyright Page Contents List of Figures List of Tables Preface to This Volume of Friction Stir Welding and Processing Book Series 1 Introduction References 2 Physical Metallurgy of 7XXX Alloys 2.1 Precipitation Reaction in Al-Zn-Mg Alloys 2.2 Effect of Cu 2.3 Effect of Ag 2.4 Effect of Microalloying 2.5 Effect of Li 2.6 Effect of Predeformation on Aging 2.7 Summary 2.8 Differential Scanning Calorimetry Observations References 3 Friction Stir Welding-Overview 3.1 Introduction 3.2 Taxonomy. 3.3 Various Zones3.4 Material Flow 3.5 Defects in FSW 3.6 Key Benefits of FSW References 4 Temperature Distribution 4.1 Introduction 4.2 Experimental Observations 4.3 Numerical Observations 4.4 Summary References 5 Microstructural Evolution 5.1 Introduction 5.2 Evolution of Grain Size 5.3 Precipitate Evolution 5.4 Differential Scanning Calorimetry 5.5 Summary References 6 Mechanical Properties 6.1 Introduction 6.2 Hardness and Tensile Properties 6.2.1 Effect of FSW Parameters 6.2.2 Effect of Thermal Boundary Conditions 6.2.3 Effect of Base Temper. 6.2.4 Effect of Natural Aging6.2.5 Multiple Pass FSW 6.2.6 Effect of Material Thickness 6.3 Fatigue and Damage Tolerance 6.3.1 Effect of Laser and Shot Peening 6.4 Joint Efficiency References 7 Corrosion 7.1 Introduction References 8 Physical Metallurgy-Based Guidelines for Obtaining High Joint Efficiency 9 Summary and Future Outlook Back Cover. Friction Stir Welding of High Strength 7XXX Aluminum Alloys is the latest edition in the Friction Stir series and summarizes the research and application of friction stir welding to high strength 7XXX series alloys, exploring the past and current developments in the field. Friction stir welding has demonstrated significant benefits in terms of its potential to reduce cost and increase manufacturing efficiency of industrial products in transportation, particularly the aerospace sector. The 7XXX series aluminum alloys are the premium aluminum alloys used in aerospace. These alloys are typically not weldable by fusion techniques and considerable effort has been expended to develop friction stir welding parameters. Research in this area has shown significant benefit in terms of joint efficiency and fatigue performance as a result of friction stir welding. The book summarizes those results and includes discussion of the potential future directions for further optimization. Offers comprehensive coverage of friction stir welding of 7XXX series alloys Discusses the physical metallurgy of the alloys Includes physical metallurgy based guidelines for obtaining high joint efficiency Summarizes the research and application of friction stir welding to high strength 7XXX series alloys, exploring the past and current developments in the field