Since the first synthesis of an amorphous phase in Au-Si system by rapid quenching of melt in 1960, a great large number of amorphous and glassy alloys were prepared up to date. Their alloy systems cover almost all metallic elements in the periodic table and can be classified to ferrous and non-ferrous alloy groups. Considering the present application situation and its future prospect of amorphous and glassy alloys, ferrous metal-based amorphous and glassy alloys are particularly important and attractive and their engineering importance has steadily increased toward the creation of a low-carbon society. Here we introduce the development examples of Fe- and Co-based amorphous and nanocrystalline alloys with unique morphologies such as wire, flaky powder and spherical particle and Fe-C base amorphous steels with new alloy compositions, in conjunction with their applications.
Summary: Materials are the essential part of our daily life and civilizations have been known by the materials they introduced. As the science progressed, scientists used the different combinations of material to enhance their properties to cope with new challenges and requirements. Alloys are also the combination of different materials specifically of metals. In early ages Iron and their alloys were used in the manufacturing heavy machineries. Gradually elements of lighter weight replaced the ferrous material like Alloys of Mg and Al. The main focus of this book will be on Aluminum Alloys specifically on Aluminum Alloy 2024. Aluminium alloys called super alloys because of their preferable mechanical and chemical properties for wide range of applications and uses. 2024 aluminium alloy was fabricated by taking percentage weight composition of Al-Cu-Mg-Zn.Corrosion tests were performed in 0.1M NaCl, 1% aqua regia and 5% aqua regia, 1% Potassium Dichromate solution and weight change was recorded in different intervals of time. Corrosion rate was studied by using Atomic Absorption Spectroscopy and morphological studies was accomplished by using Optical Microscopy.
Friction Stir Welding (FSW) is a solid-state welding process invented and patented by The Welding Institute(TWI) in 1991, for joining ferrous and non-ferrous materials. The FSW of Aluminium and its alloys has been commercialized; and recent interest is focused on joining dissimilar materials. However, in order to commercialize the process, research studies are required to characterize and establish process windows. This research work through material characterization of the welded joints establishes a process window for the Friction Stir Welding of 5754 aluminium alloy and C11000 Copper.