Bulk metallic glasses are a new emerging field of materials with many desirable and unique properties. These amorphous materials have many diverse applications from structural applications to biomedical implants. This book provides a complete overview of bulk metallic glasses. It covers the principles of alloy design, glass formation, processing, atomistic modeling, computer simulations, mechanical properties and microstructures.

Reflecting the fast pace of research in the field, the Second Edition of Bulk Metallic Glasses has been thoroughly updated and remains essential reading on the subject. It incorporates major advances in glass forming ability, corrosion behavior, and mechanical properties. Several of the newly proposed criteria to predict the glass-forming ability of alloys have been discussed. All other areas covered in this book have been updated, with special emphasis on topics where significant advances have occurred. These include processing of hierarchical surface structures and synthesis of nanophase composites using the chemical behavior of bulk metallic glasses and the development of novel bulk metallic glasses with high-strength and high-ductility and superelastic behavior. New topics such as high-entropy bulk metallic glasses, nanoporous alloys, novel nanocrystalline alloys, and soft magnetic glassy alloys with high saturation magnetization have also been discussed. Novel applications, such as metallic glassy screw bolts, surface coatings, hyperthermia glasses, ultra-thin mirrors and pressure sensors, mobile phone casing, and degradable biomedical materials, are described. Authored by the world’s foremost experts on bulk metallic glasses, this new edition endures as an indispensable reference and continues to be a one-stop resource on all aspects of bulk metallic glasses.

As excellent candidates for structural materials, the mechanical behavior of bulk metallic glasses (BMGs) is being widely studied. Although their fatigue behavior is very important for engineering applications, there are few studies on their fatigue behavior. Moreover, the understanding of the fatigue behavior is pretty limited. High-cycle fatigue experiments were conducted on notched Zr-based BMGs under tension-tension loading in air and vacuum at room temperature. A sparking phenomenon was found by infrared camera at the final fracture moment of Zr50Al10Cu30Ni10 in air. The fatigue-endurance limit (983 MPa) of Zr50Cu3--Al1010Pd3 was greatest among these Zr-base BMGs in air. The fatigue lives in vacuum and air are generally similar. LM001 and LM002 are commercial Zr-based BMGs. The X-ray diffraction results show that LM001 is a monolithic BMG and LM002 is a BMG composite containing crystalline phases. The fatigue-endurance limit (239 MPa) of LM002 was found to be significantly lower than that (567 MPa) of LM001, which indicates that the crystalline phase could degrade the resistances to fatigue. The compression strengths of Zr-based BMGs with partial crystallization are comparable to those of their fully amorphous alloys. However, the fatigue-endurance limits of these BMGs with partial crystallization were much lower than those of their fully amorphous alloys, which suggested that the fatigue behavior of a BMG is very sensitive to the microstructure. Fatigue cracks initiate from the outer surface of the sample, inclusions, and/or porosity. The propagation region exhibits a typical striation-type fracture. The final fast fracture region was very rough and occupied most of the fracture surface. The vein pattern and droplets with a melted indication were observed in the apparent melting region. A mechanistic understanding of the fatigue behavior of the Zr-based BMGs is suggested. The ratio of the fatigue-endurance limit to the tensile strength seems to increase with increasing Poisson's ratio. Moreover, The fatigue endurance limits of Zr-based, Cu-based, and Fe-based BMGs and composites were comparable to those of ductile crystalline alloys. The fatigue-endurance ratios of Zr-based BMGs were found to be comparable with those of high strength crystalline alloys.

Metallic glasses and amorphous materials have attracted much more attention in the last two decades. A noncrystalline solid produced by continuous cooling from the liquid state is known as a glass. From the other point of view, a noncrystalline material, obtained by any other process, for example, vapor deposition or solid-state processing methods such as mechanical alloying, but not directly from the liquid state, is referred to as an amorphous material. At this moment, bulk metallic glasses (BMG) are appearing as a new class of metallic materials with unique physical and mechanical properties for structural and functional usage. Extreme values of strength, fracture toughness, magnetic properties, corrosion resistance, and other properties have been registered in BMG materials.

This book has been created on the basis of contributions to the 54th International Conference of Machine Design Departments that was held for the 60th anniversary of Technical University of Liberec. This international conference which follows a tradition going back more than 50 years is one of the longest-running series of conferences held in central Europe, dealing with methods and applications in machine design. The main aim of the conference was to provide an international forum where experts, researchers, engineers and industrial practitioners, managers and Ph.D. students could meet, share their experiences and present the results of their efforts in the broad field of machine design and related fields. The book has seven chapters which focus on new knowledge of machine design, optimization, tribology, experimental methods and measuring, engineering analyses and product innovation. Authors presented new design methods of machine parts and more complex assemblies with the help of numerical methods such as FEM. Research, measurements and studies of new materials, including composites for energy-efficient constructions are also described. The book also includes solutions and results useful for optimization and innovation of complex design problems in various industries.