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Deep cryogenic treatment (DCT) has been acknowledged as an approach to modify metallic materials properties to enhance their performance. The effects of deep cryogenic treatment parameters (cryogenic temperature, cooling rate, soaking time and tempering temperature) on microstructure, mechanical properties and machining performance of Ti (N, C)–Al2O3-coated cemented carbide insert have been comprehensively...
Miniaturization drives the need for developing appropriate technology for microproducts of extremely small geometric features with high tolerances. In this work, the authors have investigated the material behavior and size effect in microextrusion of pure copper and aluminum with different grain sizes. A forward microextrusion assembly has been developed in the first phase of work to investigate the...
The aim of this study is to investigate the tool wear on friction stir processing of Al7075 base nanocomposite. The silicon carbide nanopowder was used as a reinforcing phase. The effects of input parameters including rotation speed, traverse speed and the pass number on the tool wear, microhardness and the topography were studied through the response surface methodology. Each of the input process...
The great challenge of modern industry is to carry out an online prediction in the shop floor during the machining to define the exact tool breakage instant and simultaneously improve the quality of manufactured products. Acoustic emission sensors have been used to monitoring traditional and non-traditional machining processes. This work shows a study of the online monitoring in the microturning process...
In microelectro discharge machining, dielectric plays prime role in the machining performance. The performance of machining is highly affected by dielectric fluid used in the micro-EDM. This paper discusses the influence of various different dielectric fluids such as demineralised (DM) water, oxygenated DM water, mixture of ethylene glycol and DM water, alumina suspension in DM water, alumina suspension...
This study investigated the ability of the continuous wave diode laser surface hardening of AISI 410 martensitic stainless steel with a maximum power of 1600 W. Variable process parameters scanning speed (4–7 mm/s), laser power (1200–1600 W) and stand-off distance (65–75 mm) were considered in this study. Microhardness, the geometry of hardened layer (depth and width), microhardness deviation from...
In a context where there is a continuous search for more environmentally friendly machining processes (for example, the implementation of the minimum quantity of lubrication—MQL—cooling–lubrication technique) and the constant concern with the high heat generation during the grinding process, there is still a lack of information about grinding of steel for molds and dies. Thus, the present work sought...
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