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Materials Science & Engineering A.2019: 751; 160–70,
Journal of Materials Science & Technology.2017: 33; 1596–03 [18] Yansen Hao, Guangming Cao, Chenggang Li, Jian Li.
Materials Characterization.2019: 147 ; 21–30
Spanos .Two-and three-dimensional microstructural characterization of a super-austenitic stainless steel, Materials Science and Engineering A.2006: 418 ;11–18
Materials Characterization.2016: 112; 41–50

These two favored materials are expected to obtain by the electromagnetic directional solidification of hypereutectic Al-Si melts.
The effective output of these two favored materials depends on the high segregation efficiency of the hypereutectic Al-Si melts.
Wei, Latest Progress in Purifying Metallurgical Grade Silicon into Solar Grade Silicon by Oxidation Refining, Chinese Journal of Vacuum Science and Technology, 1 (2010) 008
Morita, Control of Si Crystal Growth during Solidification of Si-Al Melt, Materials Transactions, 51 (2010) 1227-1230
Zhou, Refinement of primary Si in hypereutectic Al–Si alloy by electromagnetic stirring, Journal of Materials Processing Technology, 189 (2007) 13-18

Materials and Experimental Procedures Materials KC20WN and 15-5PH plates of 7mm thickness were chosen for this study.
The materials were welded in the solution treated condition.
Sundaresan, A comparative evaluation of welding consumables for dissimilar welds between 316LN austenitic stainless steel and Alloy 800, Journal of Nuclear Materials 279 (2000) 65-76
Ashrafizadeh, Dissimilar welding of AISI 310 austenitic stainless steel to nickel-based alloy Inconel 657, Journal of materials processing technology 209 (2009) 3628–3639
Sundaresan, Microstructural features of dissimilar welds between 316LN austenitic stainless steel and alloy 800, Materials Science and Engineering A292 (2000) 74-82

Watanabe, Microstructure and mechanical properties of Cu–Ni–Si alloys [J], Materials Science and Engineering A. 483-484 (2008) 117-119
Vincent, Dynamic embrittlement at intermediate temperature in a Cu–Ni–Si alloy [J], Materials Science and Engineering A. 477 (2008) 145-152
Albert, Precipitation processes in Cu-Co-Si alloys [J], Journal of Materials Science. 23 (1988) 4059-4065
Jin, Aging behavior of Cu–Ni–Si alloy, Materials Science and Engineering A. 361 (2003) 93-99
Noble, Precipitate structure in a Cu-Ni-Si alloy, Journal of Materials Science. 29 (1994) 218-226

For brittle materials such as proppant, when its stress is up to tensile stress limit, the material will be broken.
Journal of Natural Gas Science & Engineering, 2016, 33: 70-80
Mechanical Testing of Glass Hollow Microspheres[M]// Advances in Materials Characterization.
Journal of Southwest University of Science and Technology, 2018, 33(1): 8-12 (in Chinese)
[9]Gao H, Zheng Y R, Feng X T .EXPLORATION ON YIELD AND FAILURE OF MATERIALS [J].

Experimental Materials.
Teo, Journal of Membrane Science, 2000. 176(2): p. 147-158
Purkait, Journal of Membrane Science, 2008. 309(1-2): p. 209-221
[14] Han, J., etc., Journal of Membrane Science, 2010. 365(1-2): p. 311-318
[17] Xu, A., etc., Journal of Membrane Science, 2008. 311(1-2): p. 153-158

Empirical method is the first one to be used , but with the emergence of new materials, new technology, empirical method is not applicable in many ways; Analytical method mainly uses the space expansion theory and the theory of differential surface force source; numerical method is with the aid of computer technology, by finite element method or finite difference method to numerically simulate the problem of penetration, this method is of high speed, low cost, and can simulate the operation of the projectile trajectory.Thus,more direct, more used.
Five groups of tests were conducted, the object is ultra high performance cement-based composite materials Experiment, when the bullet into vertical target, first with the positive impact of concrete, and hardness, compressive strength of concrete itself, can have high stress zone around the spot for the impact of the child, while the concrete around the bullet in the head will produce radial compression stress wave, the bullet further into the target material, is a phenomenon of shear, extrusion, and the effect of free surface of the target for make the concrete material around the bullet point from the medium particles, eventually forming a kind of like a funnel pits and radial crack, formation of the pit area should be greater than the cross-sectional area of the bullet.
Journal of explosion and shock, 2002, 22 (4) : 368-371 [3] Kenedy R P.
Journal Southeast University,1991,21(1):1-7
Journal of PLA University of Science and Technology, 2005, 6(2) : 142-145.

INTRODUCTION Metallic glasses are a novel category of engineering materials which are characterized by their unique properties, emerging from the lack of perfect crystalline order [1-5].
The measurements took place in Slovak Academy of Sciences (Institute of Physics).
Hristoforou, Magnetotransport studies in (FexCoy)73Nb7Si5B15 ribbons, Journal of Magnetism and Magnetic Materials, 304, pp e583-e585, 2006 [15] D.
Hristoforou, Electron microscopy study of (Fe-Co)-Nb-Si-B alloys, Journal of Optoelectronics and Advanced Materials, pp 1775-1780, 2006 [16] DM Kepaptsoglou, M.
Hristoforou, Phase transformations of Co-enhanced Finemet amorphous ribbons based on resistance-temperature measurements, Journal of Optoelectronics and Advanced Materials, 10, pp. 1048-1051, 2008

Therefore, it will cost lots of material resources and financial expense to optimize the parameters through experiments.
Compressive stress is achieved in the hardened zone and the decrease of velocity leads to the increase of its value. 6 Acknowledgments This research was supported by the China National Natural Science Funds (No. 51179202), Natural Science Foundation of Shandong Province (No.
[2] Lin Li, The advances and characteristics of high-power diode laser materials processing, Optics and Lasers in Engineering. 34 (2000) 231-253
Shin, Thermal modeling for laser assisted machining of silicon nitride ceramics with complex features, ASME Journal of Manufacturing Science and Engineering. 128 (2006) 425-434
Lin, An analytical model for the temperature field in the laser forming of sheet metal, Journal of Materials Processing Technology. 101 (2000) 260-267.

In the process of analysis, the temperature-dependent properties of materials and enthalpy are considered.
The material fibers at the welding line are compressed when being heated and tensioned when being cooled obviously by adjacent materials.
Journal of Materials Processing Technology. 176, (2006) , p77-86 [3] LI Donglin,YU Yousheng,WEN Jialing,CHEN Mingqing:3D Dynamic Simulation on Temperature Field of Surfacing.
Journal of Wuhan University of Technology. 28（6）, (2004), p866 －869 (in Chinese) [6] Dean Deng,Hidekazu Murakawa:Numerical Simulation of Temperature Field and Residual Stress in Multi-pass Welds in Stainless Steel Pipe and Comparison with Experimental Measurements.Computational Materials Science. 37, (2006), p269-277 [7] NI Hongfang,LING Xiang,TU Shandong: Simulation of 3D Residual Stresses Field of Multi-pass Welding by FEM.
Miresmaeili:Experimental and Numerical Analyses of Residual Stress Distributions in TIG Welding Process for 304L Stainless Steel.Journal of Materials Processing Technology. 2 0 8, ( 2 0 0 8 ), p383-394 [9] R.H.