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Introduction Currently, the processing of materials by ultrashort laser pulses is of great interest [1-5].
Menkova, Crystallization of metals under conditions of ultra-fast cooling during processing of materials by ultrashort laser pulses, Optical journal. 6 (2008) 13-19
Series: Natural Sciences. 2 (2010) 103-120
Knapp, Micro-Processing of materials by picosecond lasers, Photonics. 1 (2013) 34-43 [11] E.Y.
Samokhin, Successes of physical Sciences. 2 (2017) 159

Last year the BSR produced over 15 700 Web of Science indexed (ISI) nano-articles that counted almost 14% from the world number [18].
One of the trends in nanotechnologies development in Latvia concerned to material sciences is obtaining of the functional nanomaterials and new composite nanomaterials [24, 25].
In 2013 50 habilitated doctors and over 300 doctors carried the research in material sciences in Latvia.
Journal of Technology Innovations and Research. 2 (2013) 1-16
Sternbergs, Materials sciences: nanotechnologies for extraction of state-of-the-art functional materials, advanced composite materials, Science, Research and Innovation: Advancing Latvia’s Development. 3 (14) (2007) 93-98

Tool Diffusion Wear Mechanism in High Efficiency Machining Ti6Al4V Yihang Fan1,2,a, Zhaopeng Hao3, Minli Zheng1, Fenglian Sun2, Suoliang Niu1 1 National and Local United Engineering Laboratory of High-efficiency Cutting and Tool Technology, Harbin University of Science and Technology, Harbin, 150080, China 2 School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150040, China. 3 Modern Manufacture Engineering Center, Heilongjiang University of Science and Technology, Harbin, 150027, China a yihang1911@163.com Keywords: Ti6Al4V, Cemented carbide tool, Diffusion wear, Cutting temperature, Pressure at tool-chip/workpiece interface Abstract.
It is the good materials for manufacturing some parts of the aircraft engine.
Acknowledgement This work was supported by the Science and Technology Research Projects of Education Department of Heilongjiang Province (2012) - “Tools friction wear mechanisms in high-speed cutting titanium”(12531140) and the National Natural Science Foundation - “Adhering Fracture Mechanism Research of High-efficiency Heavy Cutting Tools for Shell Ring Materials” (51075109) References [1] E.
Ezugwu: Journal of Machine Tools &Manufacture, Vol. 45 (2005), pp.1353-1367
Yang et al: Journal of Shenyang University of Technology, Vol. 33 (2011), pp. 166-171 [4] X.

Suwas, S.V Kailas, Two-pass friction stir welding of aluminum alloy to titanium alloy: a simultaneous improvement in mechanical propertie, Materials Science and Engineering, A 733 (2018), pp.199–210
Msomi, Effect of friction stir processing on gas tungsten arc-welded and friction stir-welded 5083-H111 aluminium alloy joints, Advances in Materials Science and Engineering, (2019), pp1-15
Lewandowska, Similar and dissimilar welds of ultrafine grained aluminium obtained by friction stir welding, Materials Science and Engineering, A 777(2020), p.139076
Pustokhina, Dissimilar modified friction stir clinching of AA2024-AA6061 aluminum alloys: Effects of materials positioning, Journal of Materials Research and Technology, 9 (2020), pp.6037–47
Msomi, V, Comparative analysis between normal and submerged friction stir processed friction stir welded dissimilar aluminium alloy joints, Journal of Materials Research and Technology 9, 5(2020), pp.9632-9644.

Method and Materials Materials.
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Ogasawara, Sugar-anionic clay composite materials:intercalation of pentoses in layered double hydroxide, J.

Theoretical and applied research on the application of high magnetic field in materials science is drastically increasing.
Lu and B.D.Sun: Materials Science and Engineering A Vol. 421(2006), p. 254
Zeng: Materials Science and Engineering A Vol. 527 (2010), p. 4953
Ohtsuka: Materials Science and Engineering A Vol. 438–440 (2006), p. 136
Deng: Materials Science and Engineering A Vol. 441 (2006), p. 181

Materials Science and Engineering A, Vol. 302(2001), p. 37 [2] A.A.
Materials Science Forum, Vol. 419-422(2003), p. 57 [3] K.U.
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Journal of Thermoplastic Composite Materials. 1998, 11(1): 22-56
Journal of Thermoplastic Composite Materials, 2000, 13(7):292-313
Journal of thermoplastic composite materials, 2005, 18(5):269-285
Journal of thermoplastic composite materials,. 2006, 19(1):97-112
Journal of thermoplastic composite materials, 1998, 33:4049-4058

Vibration tapping is capable to tap the deep and small hole in difficult-to-machine materials.
And if the thread holes are small and deep, the tapping process becomes difficult, especially for difficult-to-machine materials such as titanium alloys.
Chen: International Journal of Mechanical Sciences Vol.40 (1998), pp.1209-1222
Wang: Journal of Materials Processing Technology Vol.132 (2003), pp.345-352
Kuo: Journal of Materials Processing Technology Vol.192-193 (2007), pp.306-311

The mechanical integrity of the material at temperatures above 1500°C is confirmed in several studies [3-6].
Materials and Methods Two compositions were produced from the starting powders of Al2O3 (Type A GS-1000 - Alcoa Aluminum SA, with purity of 99.8%) and Y2O3 (TYPE REO, Alfa-Aesar, purity of 99.9%).
Waku, Deformation and Fracture Behavior of an Al2O3/YAG Composite from Room Temperature to 2023 K, Composites Science and Technology. 61 (2001) 2117-2128
Kohtoku, High Temperature Strength and Thermal Stability of Unidirectionally Solidified Al2O3/YAG Eutectic Composite, Journal of Materials Science. 33(1998) 1217-1225
Gao, Processing, Microstructure and Mechanical Properties of 25 vol% YAG-Al2O3 Nanocomposites, NanoStructured Materials. 11 (1999) 1073–1080