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For anisotropic materials, it is described by a 3 x 3 tensor α.
The thermal expansion coefficients are smaller in highly p-doped material compared to low ndoped material at high temperatures. p-type silicon carbide was also found to be harder than n-type material and to have a lower basal plane dislocation density [8].
Cliff, Journal of Crystal Growth Vol. 284, No. 425 (2005)
Bradt, Journal of The American Ceramic Society Vol. 70, No. 445 (1987)
Seitz et al., Journal of Applied Crystallography Vol. 37, No. 901 (2004)

Cold Bending Properties of Under-Matched Butt Joints for High Strength Steel Jiajie Wang1,2,a, Zhibo Dong1,b, Jingqiang Zhang 1, Jianguo Yang1, Xuesong Liu, Hongyuan Fang1, Tie Gang1 1State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China 2School of Materials and Chemical Engineering, Heilongjiang Institute of Technology, Harbin 150050, China awangjiajie2006@126.com, bdongzhb@hit.edu.cn Key words: under-matched butt joints；reinforcement；cold bending properties Abstract: In this paper, cold bending properties of Q620-CF steel butt joints were analyzed based on the finite element method.
Fig.3 The stress nephogram of under-matched joints Fig.4 The strain nephogram of under-matched joints Fig.5 and Fig.6 shows that the distribution of equivalent stress and strain of the flush equal-matched joints basically follows the law of materials mechanics, that is, the weld bottom appears stress concentration and strain concentration, which make the cold bending angle of equal-matched joints much larger more than that of under-matched joints.
At this time the weld metal has not yet cracked, but the base material has already cracked.
Author introduction: Wang Jiajie, male, PhD candidate, the main research direction: reliability analysis of welded structures and thermal spraying technology; Corresponding author: Dong Zhibo, male, PhD, the main research direction: reliability analysis of welded structures References [1] X J.Li, K.Ling, H.L, Li: Hot Working Technology, 2005(10):48-50 [2] R X.Jin, C B.Gui: Journal of Naval Academy of Engineering, 1998,83(2):74-80 [3] Y F.Yan, Y Yang, J Z.Yin, et al: Chinese Journal of Mechanical Engineering, 1996,32 (2):101-105 [4] Y J.Li, J.Wang, P.Liu: Welding of Low Alloy Steels and Engineering Application[M].
Chemical Industry Press, 2003 [5] S K.Yin, C H, He, Y L.Li: Development and Application of materials, 2008(2):58-63 [6] Z L.Zhao, H Y.Fang, J G.Yang, et al: Chinese Journal of Mechanical Engineering, 2010, 46(10):75-80 [7] J F.Qiu, S Z.Cao: Machinery Manufacturing Engineer, 2003(11):46~47 [8] G Q Wang, A P.Wu, G S.Zou, et al: Tsinghua Science and Technology, 2009,14(3):293-299

If the dissolution of the anodic material is under the premise, the voltage should be as small as possible.
Fang, Electrochemical drilling with vacuum extraction of electrolyte, Journal of Materials Processing Technology. 210 (2010) 238–244
International Journal of Machine Tools & Manufacture. 45(2005)137–152
[8] Hewidy, M.S., Ebeid, S.J., El Taweel, T.A., Youssef, A.H., Modelling the performance of ECM assisted by low frequency vibrations, Journal of Materials Processing Technology. 189(2007)466–472
[9] Chen Hui, Wang Zhen-long, Peng Zi-long, Zhao Wan-sheng, Fabrication of micro structures by ultra short voltage pulse electrochemical machining, Key Engineering Materials. 419(2010)813-816.

Thermodynamics of irreversible processes is used to develop a single-integral constitutive model for nonlinear viscoelastic materials.
References [1] R.A.Schapery: On the Characterization of Nonlinear Viscoelastic Materials, Polymer Engineering and Science, 9(4), 259-310, (1969)
[3] A.H.Muliana, R.M.Haj-Ali: Nested Nonlinear Viscoelastic and Micromechanical Models for the Analysis of Pultruded Composite Materials and Structures, Mechanics of Materials, 36(11), 1087-1110, (2004)
[5] R.M.Haj-Ali, A.H.Muliana: Numerical Finite Element Formulation of the Schapery Nonlinear Viscoelastic Material Model, International Journal of Numerical Method in Engineering, 59(1), 25-45, (2004)
[6] R.M.Haj-Ali, A.H.Muliana: A Multi-Scale Constitutive Formulation for the Nonlinear Viscoelastic Analysis of Laminated Composites Materials and Structures, International Journal of Solids and Structures, 41(13), 3461-3490, (2004).

These include methods based on ultrasonic waves used extensively for non-destructive damage detection in materials.
Staszewski, Environmental effects on Lamb wave responses from piezoceramic sensors, Materials Science Forum, 440-441 (2003) 195-202 [6] M.J.
Nagel, Piezoelectric materials at elevated temperature, Journal of Intelligent Material Systems and Structures, 144(11) (2003) 693-705 [7] J.T.
Wilcox, The temperature stability of guided wave structural health monitoring systems, Journal of Smart Materials and Structures, 15(4) (2006) 967-976 [10] P.
Uhl, Local interaction simulation approach for simplified temperature effect modelling in Lamb wave propagation for damage detection, submitted to Journal of Smart Materials and Structures (2012) [11] N.

Materials and Method Materials and Alkali Solution Preparation.
Results and Discussion Materials Characterization.
Kim, Development of method to remove weld scallop and ceramic backing material of wedge type and its application, International Journal of Naval Architecture and Ocean Engineering 7(2) (2015) 315-323
Luo, et al., Influence of boss-backing welding to ERW pipe, Materials Research Express 8(5) (2021) 056517
Davidovits, Geopolymers: Ceramic-like inorganic polymers, Journal of Ceramic Science and Technology 8 (2017) 335-350

In order to reduce the tritium permeation at high temperature, the reducing material should work at relative low temperature and the material should have small hydrogen inventory[5].
It is necessary to find a less expensive material with the similar property.
Experimental Material.
[6] J.E.Klein,J.S.Holder,Screening tests for improved methane cracking materials,Fusion Science and Technology.54(2008)611-614
[8] D.Escobar,S.Srinivasan,Y.G.Goswami,Hydrogen storage behavior of ZrNi70/30 and ZrNi30/70 composites,Journal of Alloys and Compounds,458(2008)223-230

Crack Mechanism and Anti-cracking Measures of Concrete Structures Crack Mechanism and Anti-cracking Method Thermal characteristics and thermal inertia properties of concrete materials are closely associated with the rapid increase in temperature after pouring.
Given that high-performance concrete and cement materials with high hydration heat were used, the internal temperature in the pier was extremely high.
Acknowledgments The author acknowledges the support provided by National Natural Science Foundation of China (Grand No. 51209235),governmental public industry research special funds for projects(Grant Nos.201201050), 973 Project(2013CB036406,2013CB035903),the Special Scientific Fund sponsored by IWHR for Department of Structures and Materials (1309,1353,1361,1169),The twelfth five-year science and technology project (SQ2013BAJY4138).
Journal of Hohai University, Vol.30(5): 12-16(2002)
Journal of Hohai University, Vol.30(5):48-52(2002)

In recent years, titanium alloy have been one of the most important thin-wall parts materials used in electronic industry.
Acknowledgement The authors acknowledge the financial support of Postdoctoral Science Foundation Funded Project of Jiangsu Province, China (0802025B).
Zpya: Journal of Materials Processing Technology Vol. 100(2000), p80 [2] A.
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Huh1† 1 Division of Materials Science and Engineering, Korea University, Seoul 136-701, Korea 2 Stainless Steel Research Group, Technical Research Laboratories, POSCO, Pohang 790-785, Korea Keywords: Ferritic stainless steel, Texture, Recrystallization, R-values, Ridging, Microstructure.
Introduction Since the formation of textures during the thermomechanical processing of steel sheets gives rise to anisotropic materials properties, control of the crystallographic texture is essential in order to enhance the formability of steel sheets (e.g. [1]).
Experimental procedure As received materials was the hot band of a ferritic stainless steel (FSS 430) with about 17% chromium manufactured by POSCO, Korea.
Bunge: Texture Analysis in Materials Science (Butterworths London 1982).
Journal Title and Volume Number (to be inserted by the publisher) [7] O.