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Al-Ti alloys are used in automotive and aerospace applications as excellent engineering materials due to their high specific strength and stiffness, high strength retention and high creep resistance at high temperature [4, 5].
Inoue, Progress in Materials Science, 43 (1998] 365-520
Suryanarayana, Progress in Materials Science, 46 (2001] 1-184
Abdulkareem, International Journal of Metals, Volume 2013 (2013), Article ID 127106
Nanoelectronics and Materials, 8 (2015) 23-32.

Materials and Methods Material Selection: The alloy used in this study is aluminum alloy 6061 (AA6061), which is a widely used aluminum alloy for structural applications.
When the intensity (energy) of ultrasonic waves is more to that of liquid materials bonding energy, it breaks the liquid bonds and develops cavitation bubbles inside the molten material.
After sonication process, liquid material was poured into the preheated die.
David, Theoretical and experimental study on ultrasonic dispersion of nanoparticles for strengthening cast aluminum alloy A356, Journal of Metallic Science and Technology, 26 (2008), 112-120
Hao, Processing Routes for Aluminium based Nano-composites, Master of Science thesis, Worchester Polytechnic Institute, Worchester, MA, Apr. 2010.

They are generally regarded as typical difficult-to-cut materials on account of their high strength, high work hardening tendency and poor thermal conductivity [1,2].
Ciftci: Materials and Design 25(2004), pp.303-305
Altan: Journal of Materials Processing Technology 153-154 (2004), pp.35-41
Wang: Key Engineering Materials, Vol. 375-376 (2008), pp.172-176
Volkov: Lubrication Science 11(1998), pp.51-62.

Progress toward major applications of the bulk has been hindered by the "weak-link problem" in these sintered materials.
These materials show a highly aligned structure, and overcoming the weak-link problem.
The raw materials of Y2O3, BaCO3, and CuO were mixed in the radio of Y: Ba: Cu=1:2:3 and calcined at 900� for 12 h and repeated.
b a b [9] S K Chen, L Zhou ,K G Wang et al: Chinese Journal of Low Temperature Physics, Vol. 23, No. 3(2001), p.193
[10] Hayashi,K.Kurachi,et al.: physica C, Vol.357(2001), p.669 [11] Gao Enzhi, LI Jinshan, Cao Haitao: Materials Science and Technology, in press

A combination of Eulerian–Langrangian elements is used for the waterjet and the target material, respectively.
Acknowledgements This work is financially supported by The National Natural Science Foundation of China (No. 51075076), Science and Technology Plan Project in Guangdong Province, China (No. 2009B050400005).
Journal of Materials Processing Technology 209 (2009) 4573–4577
Advanced Materials Research Vols. 126-128 (2010) 9-13
Mask and unmasked machining of glass by micro abrasive jet, Advanced Materials Research Vols. 69-70 (2009) 182-186

Journal Citation (to be inserted by the publisher) Copyright by Trans Tech Publications Fabrication and Sagging Behavior of Three Layer Al-Si/Al-Mn-Zn/Al-Si Clad Sheets for Automotive Heat Exchanger Sang-Ho Lee 1, Mok-Soon Kim 1*, Dong-su Jung 2, Jeong-Whan Han 1 and Byung-Don You 1 1 School of Materials Science and Engineering, Inha University, #253 Yonghyun-dong, Nam-gu, Inchon 402-751, Korea, mskim@inha.ac.kr 2 School of Mechanical, Aerospace and Industrial Automation Engineering, Inha University Keywords: Aluminum Brazing Sheet, Cladding, Homogenization, Cold-Rolling, Intermediate Annealing, Brazing Abstract.
The clad materials were hot rolled to a thickness of 2mm, followed by cold rolling to thicknesses in the range of 125∼182µm.
The cold rolled clad materials having various thicknesses were intermediate annealed at 2 Title of Publication (to be inserted by the publisher) 690K for 1h, and then finally cold rolled to the thickness of 100µm, by which the reduction rate of the final cold rolling (CR) changed in the range from 20 to 45%.
Sagging After brazing Before brazing 3 Title of Publication (to be inserted by the publisher) In order to analyze the microstructural features of the core alloys in the brazing process, core alloys without cladding (bare alloys) were fabricated by the same processing conditions as the clad materials, and then subjected to the brazing treatment previously described.
R01-2000-000-00297-0 from the Basic Research Program of the Korea Science and Engineering Foundation.

Processes based on self-organization of materials are very attractive due to their possibility to provide an opportunity to form the nanostructures that are difficult to achieve with conventional methods.
Solar Energy Materials & Solar Cells 93 (2009) 621-624
Lieber, Functional Nanoscale Electronic Devices Assembled Using Silicon Nanowire Building Blocks, Science 291 (2001) 851-853
Lin, Growth of zing oxide nanowires on silicon (100), Tamkang Journal of Sience and Engineering 6 (2003) 127-132
Zhang, Growth of nanowires, Materials Science and Engineering R60 (2008) 1–51

However, for all these cases the quantitative knowledge of the mechanical properties of the oxide scale and of the limits to its adherence is a key to the optimum use of the materials.
Now, these strain rates resulting from the cooling rates are entered into the so-called deformation mechanism maps (for example, figure 4) [9] for substrate materials.
Ito Current Advances in Materials and Processes (ISIJ), Vol. 16 (2003), p. 1329 [3] M.
Metcalfe The Spalling of Steam Grown Oxide from Superheater and Reheater Tube Steels, EPRI report no FP 686 (1978) [6] Papers in a special issue of Materials at High Temperature, to appear in 2005 and summarizing report in this journal: S.R.J.
Schütze Materials Science and Technology Vol. 20 (2004), p. 307 [8] A.G.

For machining ultrasmooth surface, we have to remove material at atomic level.
If we reduce the removal unit in machining, work material may be wiped off at atomic level like chemistry machining [5].
And the removal process will be dominated by the surface atomic structure instead of characteristic of the work material.
Nanoparticle colloid jet machining just utilizes the reactive impact to remove material atoms from work surface.
[3] Yuzo Mori, Kazuya, Kazuto Yasutake, Hidekazu Goto, Hiroaki Kakiuchi, Yasuhisa Sano, Hidekazu Mimura: Creation of perfect surfaces，Journal of Crystal Growth, 275 (2005) p. 39-50

The theory and method of residual stress measurement has been widely studied in material science.
The main results of these studies can be classified into two categories: method based on certain material properties and method based on removing part of the material [5-6].
Acknowledgments The authors wish to thank the National Science Foundation of China for financial support and He L. for machining experiments.
References [1] Heinz, A., Haszler, A., Muller, O., 1997, Innovative aluminium materials and components for future aerospace applications, Proceeding of the 1st International Non-ferrous Processing and Technology Conference, March 10-12, St.
[3] Rasouli, Y.S., Retraint, D., Lu, J., 1998, Study of through-thickness residual stress by numerical and experimental techniques, Journal of Strain Analysis, 33/6:449-458