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Experimental Investigation of Mechanical Micro Machining for AL6061-T6 Material Chunjiang Zhou(1)(a) Jiancheng Liu(2)(b) Adrian Avila(2) (1)Department of Mechanical Engineering Zhejiang Institute of Mechanical & Electrical Engineering, Hangzhou, CHINA (2)Department of Mechanical Engineering, University of the Pacific Stockton, California, USA (a) Zcj7012231@126.com (b) jliu@pacific.edu Key words: micro milling, cutting force, cutting temperature, surface roughness, cutting burr Abstract: This paper is to experimentally investigate the mechanical micro machining properties of AL6061-T6 using tungsten-carbide micro end mills.
Aly et al. [6] presented a new methodology of providing a finite element model of the micro-cutting process with relevant material properties acquired from a newly developed molecular dynamics simulation model of a uniaxial tension test performed on silicon.
Therefore, the dominant factor which affects the machining quality the most can be identified.
It is apparently that the left side of cutting channel is severely affected by the BUE from Fig.7(c).
There is a tradeoff between these factors.

The coefficient of thermalexpansion (CTE) is one of the material factors affecting the behavior of concrete structures.
Literature Review Oshima et al.[1]experimentally investigated the thermal and temperature-dependent mechanical properties of polymer concrete.
Koyanaki, Thermal Properties and Temperature Dependency of Mechanical Properties of Resin Concretes for Structural Use, Proceedings of the 10th International Congress on Polymers in Concrete, Honolulu, Hawaii (2001) Paper 76 [2] C.
Daniel, Mechanical and Thermal Properties of Graphite Platelet/Epoxy Composites, Polymer 45 (2004) 8211-8219 [5] P.
Neville, Properties of concrete, Fourth Edition, John Wiley & Sons Inc., (1996) 418-419 [11] A.

- In the case of medium-carbon micro-alloyed steels for cold forming, the reduced PAGS achieved by means of thermo-mechanically controlled process reflects on a closer control of as-rolled mechanical properties, avoiding hardness hot spots asking for annealing treatments before cold forming.
Several researchers [3-7] pointed out that the main microstructural parameters affecting the deformation behaviour of fully pearlitic steel are the pearlite interlamellar spacing (λ), the pearlite nodule and colony sizes, and the prior austenite grain size (PAGS).
Mechanical properties of MC-B steel in tension and in compression
F P hard spot Conclusions The influence of main microstructural features (pearlite interlamellar spacing, PAGS) on the mechanical properties of some current steel wire rod grades were studied in order to evaluate the opportunities offered by thermomechanical rolling.
The reduced PAGS has a more direct influence on the mechanical properties of medium-carbon micro-alloyed steels for cold forming both in compression and tension regime because the ferrite grain size is strongly related to PAGS.

The attachment of the micromechanical silicon die to the substrate is one of the most critical steps in the packaging of highly accurate MEMS (microelectro-mechanical systems) accelerometer.
As the results show, Young’s modulus and the thickness of the adhesives are the most significant factors influencing the stress and deformation of the silicon die.
Introduction MEMS technology integrates mechanical elements and electronics onto a common substrate by the technology of microfabrication [1].
Several investigations have showed that the material properties of adhesives significantly affect the stress and strains of MEMS device sensitive element when cooled from cure temperature to room temperature.
The material properties for simulation is shown in Table .1.

Surface nanocrystallization (SNC) is a novel method for improving materials properties.
The microstructural evolution of the nanostructured surface layer was characterized by different techniques and the change of mechanical properties of the layer after the SMAT treatment was analyzed.
The increment of microhardness may be associated with two main factors.
The corrosion resistance of materials is dependent upon many factors.
These factors mentioned above lead to a decrease in the corrosion resistance of nc copper.

This phenomenon will affect bend angle and bend curvature, and can be influenced by various factors.
The amount of spring-back/spring-go is influenced by various process parameters, such as clearance between die and punch, tool shape and dimension, contact friction condition, punch and die radiuses, material properties, sheet anisotropy, and sheet thickness.
Li X. and his colleges [3] showed that the accuracy of spring-back simulation is directly affected by the material-hardening model.
Table 1 shows the properties of the used Ck 45 sheet.
The plastic properties of rolled sheet differ from the thickness direction, normal anisotropy, and also vary with orientation in the sheet plane.

For the welding joints made by pressure welding it is possible to use thermal treatment to increase their mechanical properties (including differential treatment with rail-end hardening in HAZ) [11].
Ferroalloys, mostly ferromanganese, ferrosilicon, ferromolybdenum, ferrotitanium, ferrovanadium, are added to the thermite mixture to improve mechanical properties of the metal.
Ferroalloys enable to get the thermite metal with mechanical properties close to mechanical properties of the metal of welded rails.
Galai, Effect of vibroimpact treatment on the physical and mechanical properties of the surface layer of welded joints in rails, J.
Mikhaylovs, Analysis of factors affecting fractures of rails welded by alumino-thermic welding, J.

The mechanical properties and the chemical composition of the steel grades used are shown in Table 1 to 3.
Applied fillers including their mechanical properties are shown in Table 4.
Low-heat-joining of the higher strengthened steel extinguishes a bigger challenge due to the mechanical and metallurgical properties of these materials.
Table 4, with different properties in respect of: • mechanical resistance (cyclic and static) • viscosity • wetting properties • melting points These characteristics are used to investigate and improve the cyclic strength of the junction.
The energy input also caused severe disturbance of the mechanical-technological properties of the specimens with multi-layered and TIG remelted joints.

Product quality depends on a great variety of factors.
In order to choose basic factors and take into consideration their affect on physical, mechanical, and exploitation properties system analysis can be used.
In order to predict properties of the product it is necessary to take into consideration the affect of technological parameters on semiproduct properties change during the whole technological cycle.
The main aim of the technological process is to obtain the coating with definite level of exploitation properties appropriate to exposure factors.
Hence, it is important to state the relations between basic factors which affect on the coating formation and their physical and chemical properties.

Mechanical properties are carried out according to GB/T531-1999.
Because of the EPDM filled with modified AlN is affected by many kinds of factors, it is not sufficiently to justify the modified effects of AlN only through the TGA analysis.
The reason is that over much filler will lead to unevenly disperses in the matrix thus affecting the thermal conductivity properties.
Mechanical Properties.
Conclusion In this paper, the properties of AlN and modified AlN, the influences of AlN particles on the thermal conductivity and mechanical properties of AlN/EPDM systems have been studied.