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The latent heat is the heat contained in unit weight or volume of materials, it is a continuous function of temperature, the mathematical definition is (8) In the expression, H is thermal enthalpy.
Because of density and specific heat of materials are thermal parameters needed in the consideration, so the database of thermal parameters interrelated in ANSYS is established, which derive enthalpy changing value by ANSYS without other numeration[9].
Characteristic parameter of materials.
Melting point of materials is 1450℃, moving heat source is load, the effect of highness piled on the temperature field is neglected during the welding process, a calculated step is set by 0.05s, the whole calculated process is 15s.
[6] K.C.Tsao, C.S.Wu: Welding Journal Vol.67-3 (1988) P.70s-75s

“Evaluation of sheet metal formability by tensile tests”, Journal of Material processing technology 145: 72-83
“Analysis of plastic deformation for sheet metals with circular perforations”, Journal of Materials Processing Technology 37: 175–188
“Plastic behaviour of perforated sheets under biaxial stress state”, International Journal of Mechanical Sciences 39 (7): 781–793
“Modelling of forming limit diagram of perforated commercial pure aluminium sheets using artificial neural network”, Computational Materials Science, Vol. 47, pp. 1072-1078
[8] Venkatachalam,G et al. 2012“Prediction of Limiting Strains for Square pattern–Square Hole Perforated Commercial Pure Aluminium Sheets”, Advanced Materials Research 548: 382-386

Ultrafine energetic materials can improve the properties of explosive significantly [2-3].
[2] Yu Weifei,Huang hui,Nie fude,eg.Rasearch on Nano-Composite Energetic Materials[J] ENERGETIC MATERIALS 2005，13（5）：340-343
[3] Xu huixiang,Li xingwen,Zhao fengqi,eg.Review on Application of Nano-metal Powders in Explosive and Propellants[J] ENERGETIC MATERIALS 2011，19（2）：232-239
[J].Chinese Journal of Explosives&Propellants, 2002，25（2）：1-3
Chinese Journal of Explosives&Propellants, 2009，32（6）：75-78

China 2College of Mechanical Science and Engineering, Jilin University, Changchun 130025, P.R.
Zhang: Journal of Functional Materials, Vol. 35 (2004) No. 3, pp. 91-292 (In Chinese)
Li: Materials Review, Vol. 22 (2006) No. 6, pp. 92-99 (In Chinese)
Zheng: Key Engineering Materials, Vol. 392-394 (2009), pp. 497-503.
Zhan: Advanced Materials Research, Vol. 97-101 (2010), pp. 4057-4060.

Quartz glass has become an essential material for modern technology and industry.
However, as a typical fragile material, quartz glass has poor machinability.
Yuan, Study of Arts flow of Pendulous Reed, Journal of Harbin Institute of Technology. 1993,2:18-24
Spierings, Wet Chemical Etching of Silicate Glasses in Hydrofluoric Acid Based Solutions, Journal of Materials science. 28 (1993) 6261-6273
Yu, Effect of Bulk and Surface Defects on Etched Surface Topography of Silica Glass, Science and Technology of Overseas Building Materials. 2007, 4:46-48.

Preparation of Ni-Base Alloy Coatings on Monel alloy by Laser Cladding ZHANG Chunhua1, HAO Yuxi1, QI Lin1, HU Fang1, ZHANG Song1, a, WANG Maocai2 1School of Materials Science and Engineering, Shenyang University of Technology, China 2State Key Lab. of Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences.
Gupta: Journal of Materials Science, Vol. 36 (2001), p. 1433 [2] S.
Damborenea: Materials Science & Engineering A, Vol. 334 (2002), p. 233 [6] Q.
Yang: Key Engineering Materials, Vol. 350(2007), p. 681 [7] J.
Advanced Materials & Processes, Vol. 161 (2003), p. 35 [8] S.

In recent years, along with the method to improve the conductivity of the the development of research, the conductivity of this materials has reached practical level by people great attention.
How to improve the performance and improve LiFePO4 conductive lithium ion in material noumenon and two phase interface migration velocity is whether the application of this materials of the key.
Therefore, the synthesis and modification of this materials research hotspot and focus of concentrated in increasing material electronic conductivity and ion release rate two aspects. 2.LiFePO4 preliminary synthesis Take some of the Li2CO3 mole ratio, FeC2O4 • 2 H2O, (NH4) 2 HPO4, on agate jar, add the right proportion of agate ball, the ball materials for 0.2-1.0 than, ball mill to mixture evenly.
JOURNAL OF WuhanUniversityofTechnology, Vol 4. 91-94 (2004) [2] C.
Vol490, 2008.897-905 [4] Jianxiao Wang Magnetorheological elastomer damper-the rotor system frequency shift characteristics research, Journal of Foshan University(Natural Science Edition) Vol 1 (2010). 42-48.

Missell: Journal of Magnetism and Magnetic Materials Vol. 320 (2008), p.
F. de Campos: Materials Science Forum Vols. 591-593 (2008), p. 8
Harris: Journal of Materials Science Letters Vol. 10 (1991), p. 188
McCallum: Journal of Magnetism and Magnetic Materials Vol. 233 (2001), p.
F. de Campos: Materials Science Forum Vols. 530-531 (2006), p. 146

Interstitial materials take hydromica, carbonate, chlorite and kiesel as principle things.
Carbonate cementing materials content in Chang63 reservior sandstone of Baibao area is 4.39%, account for 21.87% of the total amount of cementing materials.
Journal of Jilin University: Earth Science Edition, 2008, 38(3):17-23
Journal of Xi'an University of Science and Technology: 2007, 27(3):377-381
Journal of China University of Petroleum (Natural Science), 2007, 31(1):5-12.

The transition to the use of advanced numerical methods for solving simulation problems to create new artificial materials is a new step in the speed and efficiency of development and the ability to quickly obtain results with conventional computers.
One of potential application of the classes of materials for hosting skyrmions are thin magnetic multilayers, such as Co/Pt, with high perpendicular magnetic anisotropy (PMA).
The stacking of different materials in the multilayers satisfies the first condition.
Piskunova, Dimensionality crossover in critical behaviour of ultrathin ferromagnetic films, Journal of Magnetism and Magnetic Materials 387 (2015) 77-82
Wiesendanger, Nanoscale magnetic skyrmions in metallic films and multilayers: a new twist for spintronics, Nature Reviews Materials 1 (7) (2016) 16044.