"SCIENCE AND TECHNOLOGY OF '!HE UNDEROLED MELT" This title was chosen as the topical headline of the Advanced Research Workshop (ARW) from March 17 to 22 1985, held at the Castle of Theuern. The usual term "Rapid Solidification" is an overlapping description. Due to the fact that nucleation is so eminently important for the undercooling of a melt and this, in turn, is an important characteristic of rapid solidifi­ cation, undercooling plays an essential role in "rapid solidification." The undercooled melt has caused an "accelerated evolution" (if not a revolution) in materials science during the last decade. Several rather exciting concepts with interesting potential for novel applications are being pursued presently in various laboratories and companies. They concern not only new processes and ha~ware developments, but also present chal­ lenging perspectives for ventures, including the founding of new companies; or they promise growth possibilities with established larger and smaller industrial establishments.

Inhalt

A. Invited Papers and Summarized Discussions.- Fundamentals of Rapid Solidification.- Role of Nucleation in Rapid Solidification.- Thermodynamics in Rapid Solidification.- Formation and Stability of Metallic Glasses.- Microstructure Formation in Rapidly Solidified Alloys.- Magnetic and Superconducting Materials.- Rapid Solidification by Laser Beam Techniques.- Continuous Products in Rapid Solidification.- The Compaction of Rapidly Solidified Materials.- Production and Characterization of Rapidly-Solidified Particulates.- Rapid Solidification Technology: The Potential for Innovative Alloy Properties.- Engineering Properties and Applications of Rapidly Solidified Materials.- B. Poster Contributions.- Thermodynamic Aspects of Glass Formation in Ni-Zr Alloys.- Thermodynamics of Chemical Ordering and Glass-Transition in Liquid Mg-Sn Alloys.- Structural Criteria for Glass Forming Ability: Application to Aluminium-Based Alloys.- Effect of the Cooling Rate on the As-Cast Fraction Crystallized.- Solidification of Amorphous Pd77,5Si16,5Cu6 in a Drop Tube.- The Formation Kinetics of PdCuSi-and PdNiP-Metallic Glasses.- Crystallization Behaviour of Ni-Nb Amorphous Alloys: Comparison of Calorimetric Results and Homogeneous Nucleation - Growth Modelling.- Nucleation and Crystallization Kinetics in GeSe2 - Sb2Te3 Systems.- Direct Thermal Measurement of Adiabatic Dendritic Coarsening.- Microstructure of Melt-Spun Al-Mo Alloys.- Microstructure of Partially Crystalline Metallic Glasses.- Theory of Microstructural Development during Rapid Solidification.- RS Aluminium - Processing and Evaluation.- Computer Controlled Pyrometric Measurement of the Cooling Rate during Melt Spinning.- The Optimization of Amorphous Materials for Toroidal Transformer Cores.- C. Concluding Statement.- General Observations and Impressions.