Preface Chapter 1: Metallurgy and Processing of Steel and Alloys The Interaction of the Components of the Injected Two-Phase Flow with Hot Metal during Injection Desulphurization in the Ladle Thermodynamic Study and Predicted Amorphization Composition Range of the Co-Ni-Ti Liquid Alloys Energy Implications of Switching to Surfactant-Modified Concentrate in Iron Ore Pellet Induration Features of the Formation of the Structure of Welded Joints of Structural Steels during Underwater Welding with Filler Wire 12X18N9T Using External Electromagnetic Influence Axial Fatigue of PBF-LB Ti6Al4V: Process and Surface Effects Fatigue Resistance of PBF-Lb IN625-RAM2 Alloy Sustainable Roller Burnishing: Effects on Surface Roughness and Power Consumption in Additively Manufactured AlSi10Mg Alloy Characterization of the Interface between WAAM-Deposited Carbon Steel and S355 Structural Steel Plate Effects of Ball Milling Time on CoCrFeNiTi High Entropy Sintered Alloys Chapter 2: Fatigue, Fractography and Failure Analysis Fracture Surface Morphology and Roughness of Ti-Scaffold Filaments Metal Dusting Failure in an Aniline Processing Plant Fractography and Microstructural Analysis of Fatigue Crack Propagation in Beta-Annealed Ti6Al4V Alloy after Fatigue Test Influence of High-Pressure Hydrogen on Tensile Properties of Pipeline Steels Evaluated by Autoclave In Situ SSRT Fracture Mechanisms of Aluminum Alloy Caused by Fatigue Tests.