About the book
Material flow analysis has been a very crucial topic in many advanced metal manufacturing processes especially for rolling, forging, extrusion, and welding that governs the quality of product through plastic flow behavior of different materials such as new high/ultra-high strength steels, and other lightweight alloyed metals i.e. Aluminum, Nickel, Titanium, Magnesium, etc., those are using in aerospace, automotive industries, biomedical engineering, and structures applications where always demand to reduce cost and weight of materials, however, increase quality and compatibility with human life. Last few decades, metallurgists are trying to achieve high strength with high corrosion resistance properties of materials by using such advanced manufacturing technologies. In rolling, forging, extrusion and high pressure torsion processing conditions, the plastic flow of metals play an important role in order to support new design and optimization of metal processing through thermomechanical processing.
Usually, constitutive analysis of the flow behaviors, which yield assessable information on the relation between the flow stress behaviors and the thermomechanical state variables i.e. plastic strain, strain rate, and temperature, is desired for processing of advanced alloyed materials. The best consolidation of mechanical and physical properties is only possible with the right sequence of thermomechanical state variables. Furthermore, we also know that complicated and large size of products are not possible to develop by single manufacturing processes, for that joining process play an important role to join similar/dissimilar metals by welding processes.
Last 2-3 decades, the friction stir welding, FSW especially for Al alloys are also one of the most important techniques due to the lack of melting, low distortion and low defects, etc. over traditional fusion welding process which forms several defects like inclusions, alloy element burning, porosity, welding hot cracks and residual deformation, that significantly reduce the welding quality of products. In FSW process, material suffers from severe plastic deformation due to a stirring tool with high speed of rotation which is required for solid state joining. The wrong combination of welding parameters is to be responsible for the worst mechanical properties in the welded region. Since, the right combination of both thermomechanical processing and joining process parameters may be favorable to reduce cost, longtime stability of metals as well as compatible with human life. The aim of this book is a review of recent progress on new grades of steels and other lightweight metals such as Al, Ni, Ti, Mg alloys.