Cover -- Title Page -- Copyright Page -- Table of Contents -- Preface -- Editors -- Alloy Design and Development -- ALLOY DESIGN CONCEPTS FOR WROUGHT HIGH TEMPERATURE TiAl ALLOYS -- Abstract -- Introduction -- Effect of Nb addition in the phase transformation of TiAl alloy -- Strengthening Mechanism in high temperature TiAl alloy -- Deformation behavior and workability -- Oxidation resistance and mechanical properties -- Conclusion -- Acknowledgement -- References -- PHYSICAL METALLURGY AND PERFORMANCE OF THE TNB AND γ-Md Alloys -- Abstract -- Introduction -- Constitution and Microstructure -- TNB-Alloys -- γ-Md Alloy -- Yield Stress and Ductility -- Deformation Mechanisms -- Fracture Toughness -- Creep -- Fatigue -- Processing -- Casting -- Wrought Processing -- Powder Metallurgy -- Diffusion Bonding -- Shot Peening -- Conclusions -- Acknowledgements -- References -- A QUARTER CENTURY JOURNEY OF BORON AS A GRAIN REFINER IN TiAl ALLOYS -- Abstract -- Introduction -- Impact To TiAl Physical Metallurgy -- Facilitating Fine-Grained Cast TiAl Alloys -- Grain Refinement Mechanisms -- Beta Solidification -- Solidification Through L+β->α Peritectic Reaction -- Alpha Solidification -- Solidification Through Primary Titanium Borides -- Boron Effects in Wrought and Powder Alloys -- Ductility of Cast Alloys with Boron Addition -- Boride Structure and Morphology -- Boride Effect on Fracture -- Remaining Issues -- References -- COMPOSITION OPTIMIZATION OF β-γ TiAl ALLOYS CONTAINING HIGH NIOBIUM -- Abstract -- Introduction -- Experimental -- The Influence of Mn Element on Hot Deformability -- The Influence of Cr Element on Hot Deformability -- The Influence of Mo Element on Hot Deformability -- The Influence of V Element on Hot Deformability -- The Effect of Different P Stabilizing Elements on Hot Deformability -- Conclusions -- References.

Processing and Fabrication -- Impact of ISM Crucible Tilting Process on Mould Filling and Yield of Near-net Shape TiAl Turbine Blades -- Abstract -- Introduction -- Experimental -- Experimental casting trials based on the current caster configuration -- Tilting process optimization via variation of the caster configuration -- Results and Discussion -- Optimization of tilting and pouring with current caster configuration -- Optimization of tilt configuration by experimental simulation -- Conclusions -- Acknowledgements -- References -- THE EFFECT OF MOULD PRE-HEAT TEMPERATURE AND CASTING DIMENSIONS ON THE REACTION BETWEEN TiAl ALLOY AND THE ZIRCONIA INVESTMENT CASTING MOULDS -- Abstract -- Introduction -- Experimental Procedure -- Mould production -- Computer simulation of metal cooling profiles -- Results and Discussion -- Mis-run during casting -- Metal surface examination by XRD -- Metal/mould interaction -- Hardened Layer -- Simulation of metal cooling profiles -- Conclusion -- Acknowledgements -- Reference -- EXPERIMENTAL RESEARCH ON THE RECYCLING POTENTIAL OF PRECISION CAST γ-TiAl DURING ELECTROSLAG REMELTING -- Abstract -- Introduction and Thermodynamics -- Consolidation by VIM -- Deoxidation by Electroslag Remelting -- Fundamentals -- Thermodynamics of Deoxidation -- Experimental -- Vacuum Arc Remelting -- Investment Casting -- Summary -- Outlook -- References -- INFLUENCE OF THE SLAG COMPOSITION ON THE FLUORINE ABSORPTION IN γ-TiAI DURING IESR -- Abstract -- Introduction -- Experimental -- Electro Slag Remelting Furnace (ESR) -- Experimental Setup -- Experimental Procedure -- Results -- Conclusion -- Outlook -- References -- RESPONSE OF MELT TREATMENT ON THE SOLIDIFIED MICROSTRUCTURE OF Ti-48Al-2Cr-2Nb ALLOY -- Abstract -- Introduction -- Experimental -- Results and Discussion -- Conclusion -- Acknowledgement -- Reference.

RECENT DEVELOPMENT AND OPTIMIZATION OF FORGING PROCESS OF HIGH Nb-TiAl ALLOY -- Abstract -- Introduction -- State of Art of Forging Ti-45Al-8.5Nb-0.2W-0.2B-0.02Y Alloy -- Dilemmas of the Existing Process -- New Works in Forging Process -- Summary -- Acknowledgements -- References -- FABRICATION OF TiAl ALLOYS BY ALTERNATIVE POWDER METHODS -- Abstract -- 1. Introduction -- 2. Alternative PM methods -- 2.1. Combustion synthesis -- 2.2. Spark Plasma Sintering -- 3. Conclusions -- 4. References -- MANUFACTURING AND PROPERTIES OF HIGH Nb-TiAl SHEET MATERIALS -- Abstract -- Introduction -- Experimental -- Results and discussion -- 3.1 Microstructures before and after hot rolling -- Conclusion -- Acknowledgement -- References -- REACTION BEHAVIOR DURING HEATING OF MULTILAYERED Ti/Al FOILS -- Abstract -- Introduction -- Experimental -- Results and Discussion -- Solid-state reaction -- Liquid reaction -- Synthesis of γ-TiAl based sheet -- Conclusion -- Acknowledgement -- References -- HIGH Nb CONTENT TiAl ALLOYS SPECIFIED TO CAST PROCESS -- Abstract -- INTRODUCTION -- EXPERIMENTAL PROCEDURES -- RESULTS AND DISCUSSION -- CONCLUSIONS -- REFERENCES -- Joining and Surface Protection -- ELECTRON BEAM JOINING OF γ-TITANIUM ALUMINIDE -- Abstract -- Introduction -- Materials and experimental details -- Results and Discussion -- Brazing of the dissimilar joint nickel-titanium aluminide with brazing filler metal Nil03 -- Brazing of the dissimilar joint steel-titanium aluminide with brazing filler metal Nil03 -- Summary and conclusions -- MECHANICAL PROPERTIES AND MICROSTRUCTURE OF A TNM ALLOY PROTECTED BY THE FLUORINE EFFECT AND COATED WITH A THERMAL BARRIER -- Abstract -- Introduction -- Results and Discussion -- Mechanical Properties -- Fracture surface and microstructure -- Conclusions -- Acknowledgement -- References.

WEAR PROTECTION FOR TURBINE BLADES MADE OF TITANIUM ALUMINIDE -- Abstract -- Introduction -- Wear phenomena at low pressure turbine blades -- Behavior of titanium aluminid materials under different wear conditions -- Fretting wear (sliding) -- Impact wear (hammering) -- Solid particle erosion -- Fretting fatigue / Fretting sliding wear under high pressure conditions -- High velocity sliding friction wear -- Wear protection -- Sliding wear / Impact wear -- Fretting fatigue -- Conclusion -- Acknowledgement -- Literature -- EFFECT OF Er ADDITION ON MICROSTRUCTURE AND OXIDATION RESISTANCE OF HIGH Nb CONTAINING TiAl ALLOYS -- Abstract -- Introduction -- Experimental -- Results and Discussion -- Microstructural Characterization -- Oxidation Behaviour -- Conclusions -- References -- Fundamentals -- FUNDAMENTAL AND APPLICATION-ORIENTED RESEARCH ON GAMMA ALLOYS -- Abstract -- Introduction -- Interactions Among Point Defects and Solutes -- Atomic Interactions in TiAl-Nb System -- Strengthening Mechanisms of TiAl-Nb Alloys -- The βo ->ω" Transformation in Beta-Gamma Alloys -- First Principles Study of Oxidation Process -- Effects of Vacancies a n d Solutes on TiO2/TiAl Binding -- Alloying Effects on Oxidation Energy of TiO2 and AI2O3 -- MD Simulation of Dislocation Reactions -- Nucleation and Glide of (011] Superdislocations -- Transformation of Dislocation Dipoles -- Texture Evolution During Extrusion -- Near Net-Shape Investment Casting -- Forming via Prealloyed Powder Metallurgy -- Summary and Conclusion -- Acknowledgements -- References -- DEFORMATION OF PST CRYSTALS OF Ti46A18Nb AND Ti46A18Ta -- Abstract -- Introduction -- Experimental procedure -- Results and discussion -- SEM and EBSD observations -- TEM analysis in Ti46Al8Nb -- Conclusions -- References -- SEEDED GROWTH OF TM7Al-2Cr-2Nb PST CRYSTALS -- Abstract -- Introduction -- Experimental Procedure.

Results and Discussion -- Directional Solidification of Ti-43Al-3Si Alloy -- Seeded Growth of Ti-47AI-2Cr-2Nb PST Crystals -- Room Temperature Tensile Properties of Ti-47AI-2Cr-2Nb PST Crystals -- Conclusion -- References -- TEXTURES OF RECTANGULAR EXTRUSIONS OF Ti-47Al-2Cr-2Nb-0.15B -- Abstract -- Introduction -- Experimental Procedure -- Materials and Thermo-mechanical Processing -- Characterization of Local Texture and Microstructure -- Results -- Texture of As-extruded M icrostructure -- TMTL Microstructure -- Discussion -- Extrusion Texture of y Phase -- Evolution of α/α2 Phase Texture -- Conclusions -- References -- Microstructure and Properties -- ORIGIN AND MAGNITUDE OF INTERNAL STRESSES IN TiAl ALLOYS -- Abstract -- Introduction -- Alloys -- Stress Reduction and Anticipated Dislocation Behaviour -- Reliability of the Method -- Internal Stresses -- Conclusions -- References -- EFFECTS OF MICROSTRUCTURE, ALLOYING AND C AND Si ADDITIONS ON CREEP OF GAMMA TiAl ALLOYS -- Abstract -- Introduction -- Experiments -- Results and Discussion -- 1. Microstructure and Properties -- 2. Effect of Microstructure and Alloy Composition on Creep -- 3. Aging Responses in Fully-Lamellar Material -- 4. Aging Effect on Creep of FL Materials at 760°C -- 5. Carbide (and Silicide) Formation-Process and Effects -- 6. Optimized Carbon + Silicon Additions and Distribution -- 7. Thoughts on Primary Creep -- Summary -- Acknowledgment -- References -- MICROSTRUCTURE AND PROPERTIES OF CAST Ti-46Al-8Ta ALLOY -- Abstract -- Introduction -- Experimental Procedure -- Results and Discussion -- Primary Solidification Phase and Solidification Path -- Solid Phase Transformations -- Microstructure Stability -- Conclusions -- Acknowledgements -- References -- EFFECT OF THE MICROSTRUCTURE ON THE DEFORMATION AND FATIGUE DAMAGE IN A GAMMA-TiAl PRODUCED BY ADDITIVE MANUFACTURING.

Abstract.