Laser Shock Processing of FCC Metals: Mechanical Properties and Micro-structural Strengthening Mechanism (Springer Series in Materials Science Book 179)

Laser shock processing (LSP) is a new and promising surface treatment technique for improving the fatigue durability, corrosion, wear resistance and other mechanical properties of metals and alloys. During LSP, the generated shock wave can introduce a deep compressive residual stress into the material, due to its high-pressure (GPa-TPa), ultra-fast (several tens nanoseconds), ultra-high strain-rate and high-energy. The overall properties and behavior of metal materials subjected to LSP were significantly improved because a refined surface layer was successfully obtained. Nevertheless, up to now, a clear scenery between micro-structure and macro-property of the refined surface layer, especially formation of sub-micrometer grains from coarse grains during severe plastic deformation, is still pending. Therefore, the basic studies of the underlying mechanism for grain refinement by ultra-high strain-rate presented in this book becomes more and more crucial. Front Matter....Pages i-xi General Introduction....Pages 1-14 Surface Integrity of LY2 Al Alloy Subjected to Laser Shock Processing....Pages 15-51 Tensile Properties and Fatigue Lives of LY2 Al Alloy Subjected to Laser Shock Processing....Pages 53-84 Grain Refinement of LY2 Al Alloys Induced by Multiple Laser Shock Processing Impacts....Pages 85-101 Visual Inspection and Control Methods of Laser Sock Processing Effectiveness....Pages 103-111 Mechanical Properties of AISI 304 SS and its Welded Joint Subjected to Laser Shock Processing....Pages 113-135 Stress Corrosion Cracking Resistance of AISI 304 SS Subjected to Laser Shock Processing....Pages 137-152 Grain Refinement of AISI 304 SS Induced by Multiple Laser Shock Processing Impacts....Pages 153-167 Electrochemical Corrosion Resistance of AISI 304 SS Weldment Treated by Laser Shock Processing....Pages 169-187 Back Matter....Pages 189-194 Surface integrity of LY2 aluminum alloy subjected to laser shock processing Tensile properties and fatigue life of LY2 aluminum alloy by laser shock processing Grain refinement of the alloys with high stacking fault energy (SFE) induced by ultra-high plastic strain during multiple laser shock processing impacts Mechanical properties of ANSI 304 stainless steel subjected to laser shock processing Stress corrosion cracking (SCC) resistance of ANSI 304 austenitic stainless steel subjected to laser shock processing Grain refinement of the alloys with low stacking fault energy (SFE) induced by ultra-high plastic strain during multiple laser shock processing impacts Grain refinement of the alloys with medium stacking fault energy (SFE) induced by ultra-high plastic strain during multiple laser shock processing impacts.