Abstract
Research in advanced materials and manufacturing processes is concerned with fundamental scientific questions relating to a wide variety of new materials and the development of an understanding of how to utilize these materials in various applications. Materials and Manufacturing Engineering focuses on the application of materials as well as the processing of new materials and manufacturing processes. Research in these areas will lead to the advancement of technological products within various fields, including energy production, the automotive and aeronautical industries, medical devices, and communication.
This particular special issue called for the topics of material property enhancements through advances in materials processing, material design, material combinations and design that improve system performance, nanoscience and nanotechnology, synthesis of ferrous, nonferrous and composite materials for various applications, machining and forming technology, non-traditional material removal processes, machine tools technology, materials joining, micro- and nano-fabrication, precision engineering, inspection, measurement and metrology, additive manufacturing, and manufacturing planning, optimization, and simulation. The aim of this special collection is to bridge the gap between pure research and the more practical publications on materials and manufacturing, in addition to collecting original research articles as well as review articles with the purpose of providing guidelines for future research directions. The papers accepted for this special collection present the efforts and achievements made in the field of materials and manufacturing. Even though the selected papers only focus on some specific issues within materials and manufacturing, they signify advancement that we are very happy to be able to share with the readers of this field. This special issue contains papers related to materials and manufacturing.
Materials
Xiaofeng Lu et al. investigated the effect of ambient temperature on compressibility and recovery of NiTi shape memory alloys as static seals and concluded that the compressibility and recovery coefficients of NiTi alloys were insignificantly fluctuated at the temperatures between 60°C and 150°C upon the compression loading. The features of strong deformation and martensite reorientation in the compressed NiTi alloys confirmed the temperature effect. Fu Li et al. evaluated the hot workability of as-extruded TA2 pure titanium using processing map and summarized that the strain will not impact the workability obviously for the little change of the stable regions of the processing maps in different strains. Finally, an overall consideration was given in the processing maps, and the optimized workability of TA2 should be within the strain rate range of 0.5–1 s−1and temperature range of 900°C–925°C. Chaohua Jiang et al. presented the influence of different amounts of polyacrylic ester and silica fumes on the mechanical properties of mortar, such as the compressive strength, splitting tensile strength, bonding strength, and abrasion resistance. They reported that the compressive and splitting tensile strength of mortar can be improved with the addition of polyacrylic ester and silica fumes.
Manufacturing
Can Kang et al. investigated the impact of abrasive particles on the target plate using abrasive water jet and reported that, as for the target plate, global surface morphology is in accordance with predicted effects. The most favorable surface roughness is not associated with vertical impact, and it hinges upon the selection of standoff distance. Furthermore, variation of surface roughness with incident angle is not monotonous. Hongmin Xin et al. designed and conducted the disk-milling grooving experiments of titanium alloy and examined the milling force and milling temperature. They also investigated tool life, wear patterns, and its corresponding mechanisms in detail through scanning electron microscope observation, X-ray energy-dispersive spectrometer, and automatic tool analyzer. They concluded that the oxidation degree of major cutting edge was higher than minor cutting edge and the rake face was severe compared to flank face. The element W easily diffused into the titanium alloy, the diffusion ability of Co and C were weaker than W, and the element Ti was dead in diffusion process.
Yahya Isik presented a cooling method to be used in metal cutting based on a tool holder with a closed internal cooling system with cooling fluid circulating inside and reported that with the reduced cutting temperature of the internal cooling, it was possible to control the temperature and thus prevent reaching the critical cutting temperature during the turning process, which is vitally important in extending tool life during the processing of Waspaloy. Jitender Kundu and Hari Singh performed the friction stir welding of aluminum alloy AA5083-H321 for optimization of the process parameters for maximum joint strength. Taguchi’s L9 orthogonal array has been used for three parameters: tool rotational speed, traverse speed, and tool tilt angle. They conveyed that tool rotational speed and traverse speed are the two most significant parameters which influence most of the quality characteristics of friction stir-welded joint. Haiyang Wang et al. presented the analytical formulation of circular steel tubular column with hollow concrete section. In addition, the concept of average temperature was proposed to formulate the failure load of circular hollow recycled concrete-filled steel tubular section and circular hollow concrete-filled steel tubular section columns at high temperature. Gianluca D’Urso et al. implemented the acquisition system for the measurement of micro-electro-discharge machining process parameters and the statistical analysis of their influence on the process performance and used a linear and non-linear regression approach to obtain predictive equations for the most important aspects of micro-electro-discharge machining process, such as the machining time and the electrode wear.
We believe that the readers of Advances in Mechanical Engineering will find that this special collection contains updated information on recent issues in materials and manufacturing.