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Katsuhiro Maekawa

Bio: Katsuhiro Maekawa is an academic researcher from Ibaraki University. The author has contributed to research in topics: Selective laser sintering & Machining. The author has an hindex of 16, co-authored 103 publications receiving 2041 citations.


Papers
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Book
06 Jul 2000
TL;DR: The most up-to-date in the field of metal machining is "Metal Machining: Theory and Applications" as mentioned in this paper, which provides in-depth discussion of the theory and application of machining at an advanced level.
Abstract: Metal machining is the most widespread metal-shaping process in the mechanical manufacturing industry. World-wide investment in metal machining tools increases year on year - and the wealth of nations can be judged by it. This text - the most up-to-date in the field - provides in-depth discussion of the theory and application of metal machining at an advanced level. It begins with an overview of the development of metal machining and its role in the current industrial environment and continues with a discussion of the theory and practice of machining. The underlying mechanics are analysed in detail and there are extensive chapters examining applications through a discussion of simulation and process control. "Metal Machining: Theory and Applications" is essential reading for senior undergraduates and postgraduates specialising in cutting technology. It is also an invaluable reference tool for professional engineers. Professors Childs, Maekawa, Obikawa and Yamane are four of the leading authorities on metal machining and have worked together for many years. Of interest to all mechanical, manufacturing and materials engineers Theoretical and practical problems addressed

501 citations

Journal ArticleDOI
01 Jan 1997-Wear
TL;DR: In this article, the authors investigated the thermal properties of high-speed machining of Inconel 718 and Ti 6Al 6V 2Sn alloys from a thermal point of view.

500 citations

Journal ArticleDOI
01 Sep 1995-Wear
TL;DR: The role of friction in nano-scale machining has been investigated using a new molecular dynamics simulation model based on the Nose-Hoover method, in which the restricted analytical region moves together with the tool advancement.

212 citations

Journal ArticleDOI
TL;DR: In this article, a comparative investigation of mechanical properties of Ti-6Al-4V titanium alloy with micro-crystalline and sub-micro-stalline structures in the temperature range of 20-600 � C has been carried out.
Abstract: A comparative investigation of mechanical properties of Ti–6Al–4V titanium alloy with microcrystalline and submicrocrystalline structures in the temperature range of 20–600 � C has been carried out. The grain sizes under the submicrocrystalline and microcrystalline conditions are 0.4 and 10 mm, respectively. The alloy with the microcrystalline structure has been additionally subjected to a heat-strengthened treatment. The structure refinement of the alloy results in increase in both strength and fatigue limit at room temperature by about 20%. With increasing deformation temperature, the strength of the submicrocrystalline alloy is higher than that of the microcrystalline alloy up to 400 � C. However, the creep strength of the submicrocrystalline alloy is slightly lower than that of the heat-strengthened microcrystalline alloy already at 250 � C.

108 citations

Journal ArticleDOI
01 Aug 1990-Wear
TL;DR: A hot-machining technique using plasma jet heating has been employed to improve the machinability of glasses and engineering ceramics such as Pyrex, mullite, alumina, zirconia and silicon nitride, and a sintered high speed steel as mentioned in this paper.

90 citations


Cited by
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Journal ArticleDOI
TL;DR: In this paper, the evolution of the new microstructures produced by two types of dynamic recrystallization is reviewed, including those brought about by severe plastic deformation (SPD).

1,777 citations

Journal Article

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1,682 citations

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TL;DR: A brief overview of the available SPD technologies is given in this paper, along with a summary of unusual mechanical, physical and other properties achievable by SPD processing, as well as the challenges this research is facing, some of them generic and some specific to the nanoSPD area.

1,451 citations

Journal ArticleDOI
TL;DR: In this article, the state of the art in selective laser sintering/melting (SLS/SLM) processing of aluminium powders is reviewed from different perspectives, including powder metallurgy (P/M), pulsed electric current (PECS), and laser welding of aluminium alloys.

1,172 citations

Journal ArticleDOI
TL;DR: In this paper, the authors provide an overview of machining induced surface integrity in titanium and nickel alloys and conclude that further modeling studies are needed to create predictive physics-based models that is in good agreement with reliable experiments.
Abstract: Titanium and nickel alloys represent a significant metal portion of the aircraft structural and engine components. When these critical structural components in aerospace industry are manufactured with the objective to reach high reliability levels, surface integrity is one of the most relevant parameters used for evaluating the quality of finish machined surfaces. The residual stresses and surface alteration (white etch layer and depth of work hardening) induced by machining of titanium alloys and nickel-based alloys are very critical due to safety and sustainability concerns. This review paper provides an overview of machining induced surface integrity in titanium and nickel alloys. There are many different types of surface integrity problems reported in literature, and among these, residual stresses, white layer and work hardening layers, as well as microstructural alterations can be studied in order to improve surface qualities of end products. Many parameters affect the surface quality of workpieces, and cutting speed, feed rate, depth of cut, tool geometry and preparation, tool wear, and workpiece properties are among the most important ones worth to investigate. Experimental and empirical studies as well as analytical and Finite Element modeling based approaches are offered in order to better understand machining induced surface integrity. In the current state-of-the-art however, a comprehensive and systematic modeling approach based on the process physics and applicable to the industrial processes is still missing. It is concluded that further modeling studies are needed to create predictive physics-based models that is in good agreement with reliable experiments, while explaining the effects of many parameters, for machining of titanium alloys and nickel-based alloys.

986 citations