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Maximum failure loads of CT specimens obtained by test and analysis are presented. 1.0 Introduction R curve analysis is a procedure generally used in elastic-plastic behavior of materials to characterize the resistance to fracture of materials during incremental slow stable crack extension.
S.Sundaresan,C.Pany, M.K.Sundaresan and B.Nageswara Rao, “Mathematical model for failure load evaluation of maraging steel compact tension specimens”, International Journal of Mathematical Sciences and Engineering Applications (IJMSEA), Vol.6.pp.281-297 (2012)
Nageswara Rao, “On the fracture toughness evaluation in weldments of a maraging steel rocket motor case”, Materials and Design, Vol.31, pp.4921-4926 (2010)
ASTM E399 -06, “Standard Test method for Linear Elastic Plane Strain Fracture Toughness KIC of Metallic Materials”, Annual Book of ASTM Standards, Vol.03.01 (2008)
Kapp, “Improved Wide Range Expressions for Displacements and Inverse Displacements for Standard Fracture Mechanics Specimens”, Journal of Testing and Evaluation, Vol.19, pp.45-54 (1991)

Materials and Methods The materials used for the current study was 7xxx series aluminum ingot.
Robson, Microstructural evolution in aluminium alloy 7050 during processing, Materials Science and Engineering A. 382 (2004) 112-121
Zheng, High-pressure homogenization treatment of Al-Zn-Mg-Cu aluminum alloy, Journal of Material Science.43 (2008) 1583-1586
Solberg, Effect of homogenization and alloying elements on recrystallization resistance of Al-Zr-Mn alloys, Materials Science and Engineering A. 444 (2007) 284-290
Prangnell, Modelling Al3Zr dispersoid precipitation in multicomponent aluminium alloys, Materials Science and Engineering A. 352 (2003) 240-250.

MaxStrain MCU realizes 2-D forging process to receive ultrafine or nanostructure in metallic materials.
Such non-classical steels processing modes allow us to receive materials with not typical mechanical properties.
Rudskoy: Ultrafine and nanoscale grain structure receiving using hot and warm deformation (Science and technical journal of SPbSPU #2, St.
Naumov: High Strength Dual-Phase Steel Structure Evolution During Hot Rolling (Materials Science & Technology 2012 Conference & Exhibition (MS&T’12), Thermal and Thermomechanical Processing Session, Pittsburgh, PA, USA 2012) [6] Y.A.
Naumov: High Strength Dual-Phase Steel Structure Evolution During Hot Rolling (Materials of 6th international science and application conference "Innovative technologies for metalurgy and mechanical industry", Ekaterinburg 2012) [7] G.A.

Using potassium carbonate, ammonium phosphate, zirconium dioxide, and cobalt oxide as raw materials, a kind of potassium zirconium phosphate ceramic pigments with bright purple color at high temperature were obtained through a series of optimizing experiments.
The raw materials are weighed accurately according to every single composition, and then ball milled and sintered at 1400 o C for 1 h.
This kind of solid solution is mostly formed in solid inorganic materials.
[2] Xiancai Li, Baoyu Ouyang and Houfan Liu: Journal of Nanchang University (Natural Science, in Chinese) Vol. 24 (2000), p. 85
[6] Peiwen Lu: The basic of inorganic materials science, (Wuhan University of Technology Press, Wuhan 1996)

Titanium and Zirconium Base Alloys in Ultra-Fine Grain state: Mechanical Stability and Failure Behavior DANILOV Vladimir1,2,a, EROSHENKO Anna1,b, SHARKEEV Yury1,2, ORLOVA Dina1,2, ZUEV Lev1 1Institute of Strength Physics and Materials Science SB RAS, Akademicheskii ave., Tomsk, 634055, Russia 2National Research Tomsk Polytechnic University, 30 Lenina ave., Tomsk, 634050, Russia advi@ispms.tsc.ru, beroshenko@ispms.tsc.ru Keywords: Titanium and zirconium alloys, biomedical materials, nanostructured materials, pressing, electron microscopy, microstructure, grain size, mechanical properties Abstract.
The SPD treatment would cause strengthening of materials, mostly due to grain refinement.
Both materials undergo viscous fracture.
Tjong, Nanocrystalline Materials.
Aleksandrov, Bulk Nanostructured Metal Materials, Akademkniga, Moscow, 2007

Experimental Materials Styrene maleic anhydride copolymer (SMA) as the protective colloid was prepared in our lab.
Melamine and 37% formaldehyde as wall materials, hydrochloric acid and sodium hydroxide anhydrous as pH controller, CVL as core material, poly-acrylic sodium and maleic anhydride, styrene were obtained from home market.
If core materials released into the environment can't be scattered timely, the Ct≠0, at this time (Ci - Ct) ≠ constant, and changes with time.
Journal of materials science, 1999, 34: 3161-3164 [2] Zhaohui Zhen.
Journal of Colloid and Interface Science, 2001, 241: 502–508 [4] Zhang yuting.

Materials and Methods Materials Bitter melon seeds (purchased from Chengxin herb corporation, Hebei province, China) were collected from mature and ripe bitter melons only, with similar size, color, and without physical damage.
Journal of Ethnopharmacology, 2005. 96(1-2): p. 49-55
LWT-Food Science and Technology, 2009. 42(9): p. 1530-1537
Journal of oleo science, 2001. 50(9): p. 753-758
The Journal of nutrition, 2012. 142(7): p. 1197-1204

Journal of Applied Ecology, 1991, 28: 963-987 [4] Z.
Journal of Environmental Sciences. 2009, 21(9): 1261-1267 [7] S.R.
International journal of food microbiology, 2000, 60(1): 91-97 [17] R.J.
Chinese Journal of Ecology. 2000, 19(5): 45-51(in Chinese) [19] Y.
Effect of plants and filter materials on bacteria removal in pilot-scale constructed wetlands.

High purity (99.999%) aluminum sheets with 0.2 mm thickness were utilized as the starting materials.
Kim, Nanostructured materials prepared by use of ordered porous alumina membranes, Electrochimica Acta. 50 (2005) 2997-3013
Sauer, Asymmetric membranes with modified gold films as selective gates for metal ion separations, Journal of Membrane Science. 210 (2002) 273-278
Bruening, Separation of amino acid mixtures using multilayer polyelectrolyte nanofiltration membranes, Journal of Membrane Science. 280 (2006) 1-5
Voelcker, Nanoporous anodic aluminium oxide: advances in surface engineering ad emerging applicationms, Progress in Materials Science. 58 (2013) 636-704.

Introduction Since the application market of polylactic acid and resin materials is huge, and the application forms of various polylactic acid and resin materials are very diverse.
Hence, it is necessary to add other materials that enhance mechanical properties [1-2].
Springer, Effects of processing temperature and layup on springback, Journal of Composite Material, 29, 10 (1995)
Wu, Influence of processing on quality of advanced composite tools, Journal of Advanced Materials, 27, 3 (1996)
[5] Kou H., Asif A., and Shi W., Photopolymerization kinetics of hyperbranched acrylated aromatic polyester, Journal of Applied Polymer Science, 89 (2003) 1500-1504