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This is because it does not require the consumable filler materials and can eliminate some welding defects such as crack and porosity.
The tool rotation promotes mechanical (solid-state) mixing of the materials on the advancing and retreating sides of the weld.
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Lapasset, Precipitation microstructures in an AA6056 aluminium alloy after friction stir welding: Characterisation and modeling, Materials Science and Engineering A 496 (2008) 77–89
[3] H.J.Liu, Tensile Properties and Fracture Locations of Friction-Stir-Welded Joints of 2017-T351 Aluminum Alloy, Journal of Materials Processing Technology, 142 (2003) 692-696

Materials Science and Engineering: B, 2016. 206: p. 69-78
Journal of Materials Science: Materials in Electronics, 2009. 20(9): p. 789-834
Frontiers of Materials Science, 2012. 6(2): p. 128-141
Journal of Materials Science: Materials in Electronics, 2021: p. 1-8
Journal of Materials Science: Materials in Electronics, 2020. 31: p. 11352-11365

At present, the modified materials of the implanted electrodes are used such as Au, Pt, iridium oxide, etc.
And the metal materials are made of Pt, Pt-Ir alloy, Au, iridium oxide, Ti, tungsten or tantalum.
Qiu, et al., IrO2 Thin Films Deposited by DC Magnetron Sputtering Method, JOURNAL OF INORGANIC MATERIALS-BEIJING. 15 (2000) 733-739
Dingfang, et al., The implantable platinum - iridium alloy modified microelectrode and implanted in the rat brain after the motor cortex of impedance measurement, Journal of wuhan university: science edition. 3 (2009) 253-257
Rare metal materials and engineering, 35 (2006) 820-823

., Beijing, 100013, China 2 Tiandi Science&Technology Co.
Tooth body is 42CrMo steel,elastic modulus of 212 GPa, poisson's ratio of 0.28, the density of 7850 kg/m3; carbide-tipped materials are YG series carbide, elastic modulus of 600 GPa, poisson's ratio of 0.22, the density of 14600 kg/m3.
China Safety Science Journal,2006.16(11),14-17
Journal of Heilongjiang Institute of Science and Technology,2009,19(3):22 2-224
Journal of Liaoning Technical University: Natural Science Edition,1999,18(6):649-652

After removal of infected enamel and/or dentin, synthetic materials such as dental resin or metals are filled in the cavity [2].
The mechanical properties of these materials are not similar to that of natural tooth and these materials are incapable of replacing the biological Function of the lost tissue [3].
Journal of Materials Chemistry B 1.37 (2013): 4764-4772
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Journal of Biomaterials Science, Polymer Edition 16.12 (2005): 1537-1555.

Tang: Journal of Hazardous Materials Vol. 175 (2010), p. 816 [3] F.
Hameed: Journal of Hazardous Materials Vol. 164 (2009), p. 473 [5] J.
Chen: Journal of Hazardous Materials Vol. 168 (2009), p. 739 [7] Z.L.
Meikap: Journal of Hazardous Materials Vol. 153 (2008), p.221
Xia: Journal of Hazardous Materials, Vol. 150 (2008), p.446

Choice of materials.
The residual austenite and bainite after heat treatment also affect the wear resistance of materials.
It is difficult, if using the whole material design, to ensure that the materials have high strength, high toughness and good wear resistance.
References [1] K.Liu,Mh.Jiao:submitted to Journal of Hefei University of Technology (Natural Science) (2005)
Guo: submitted to Journal of Shandong University of Technology (Natural Science Edition) (2004)

Meskini: Journal of Composite Materials.
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Jen: Journal of Composite Materials.

Mermerdaş, Microstructural properties and pozzolanic activity of calcined kaolins as supplementary cementing materials, Canadian Journal of Civil Engineering, 39(2012), 1274-1284
Constituent Materials.
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Ray, Tensile strength of steel fibre reinforced concrete, Journal of the Institution of Engineers, India.
Ramaswamy, Mechanical properties of steel fiber-reinforced concrete, Journal of Material and Civil Engineering, 19(2007), 385-392

Xiong: Materials, Vol. 8 (2015) No.6, p.3101
Umar: Materials Express, Vol. 5 (2015) No.1, p.3
Hu: Journal of Materials Chemistry A, Vol. 1 (2013) No.29, p.8445
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