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Effects of amorphous and nanocrystalline inoculants on the micro-structure and mechanical behavior of Fe-Si-Mn steels Lin Fang1, a, Chunxiang Cui1,b, *,Tiebao Wang1,c , Chuang He1,d, Kuo Jia1,e 1School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300130, China afanglin_007@126.com, bhutcui@hebut.edu.cn, cwtb@hebut.edu.cn, dhc0310@126.com, esincerityone@sina.cn Keywords: Fe-V-Nb intermediate alloy, 60Si2Mn, rapid solidification, amorphous and nano-crystalline, modification.
Introduction The common alloy spring steels are the most important spring materials.
Experimental In this research, the chemical compositions of materials needed for testing are listed in Table 1.
With the increasing of tempering temperature, the dimple becomes finer and finer, the toughness of materials is improved.
Li: Special steel Vol. 22(2001), p. 13-14 [8] Won Jong Nam, Hae Chang Choi: Wire Journal International Vol. 5 (1996), p. 94-97 [9] P.Y.Yang, Q.P.Yang: The new spring steel for motor car.

Synthesis and Application of p-Carboxyarsenazo for Spectrophotometric Determination of Cu(II) in Environment Water Lin Gao1, 2 a, Yanhua Li, Shengjie Chen2, Fang Chen2, Yuanfang Zhang and Junlong Yao3 1Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education, Jianghan University, Wuhan, China 2School of Chemistry and Environmental Engineering, Jianghan University, Wuhan, China 3School of Materials Science and Technology Wuhan Institute of Technology, Wuhan, China awoshiyjl2007@163.com Keywords: Spectrophotometry; Copper; p-Carboxyarsenazo; Synthesis.
Acknowledgment This work was supported by the National Natural Science Foundation of China (NSFC: 21107033), and Project of Scientific Research Fund of Hubei Provincial Education Department (Q20121510) .
Chen: Advanced Materials Research Vol. 1229(2011), p. 356-360 [2] C.J.
Cassella: Journal of Hazardous Materials Vol. 181(2010), p. 485-490 [5] Da.

B1 and B2 owns the same organization structure but different blended ratio of materials.
B2~B5 is composed of same material but woven with different organizations.
Li: submitted to Texitle Journal In Chinese, Vol.24 (2003), p.99
Pu: submitted to The Advance of Textile Science and Technology In Chinese (2009), p.11
Yao, in: New Environmental Protection and Health Materials of Tourmaline, edited by China Textile University Publications, Shanghai, China (2001), in press

where:is tri-axial stress ratio; is elasticity modulus; and are material constant; is accumulative plastic strain rate.
in where: is effective stress; is calculated stress; is damage variable; is axial accumulative plastic strain; is hardening parameter; and c are material parameters.
An Isotropic Damage Model for Ductile Material.
A Continuous Low Cycle Fatigue Damage Model and Its Application in Engineering Materials.
Journal of PLA University of Science and Technology (Nature Science Edition), 2012, 13 (3): 282-286.

Additive manufacturing (AM) is gradually occupying a unique place as a viable industrial manufacturing technology for parts with complex geometry and difficult-to-machine materials.
Introduction Fused deposition modeling (FDM) is a popular extrusion-type additive manufacturing technology for thermoplastic materials.
One of the main attributes of FDM for its popularity is the freedom to use raw material filaments of a range of thermoplastic materials, including Acrilo-nitrile-butadiene Styrene (ABS) and polylactic acid, from any vendor.
The contouring zone consists of one or more contours of deposition of materials following the locus of the edge of the layer.
Speara, Predicting microstructure-dependent mechanical properties in additively manufactured metals with machine- and deep-learning methods, Computational Materials Science, Volume 175, 1 April 2020, 109599

Therefore, the fly ash content in engineering cannot exceed 30% of the gelled material.
Technical features for the main materials and the mixing proportion design Technical features for the main materials.
Thus, if the component materials are given, water cement ratio is the main parameter to determine the concrete strength, durability and the other physical and mechanical properties [5].
For this reason, in project, it requires that the fly ash content cannot exceed 30% of the gelled material.
Technical College Journals of Yan Cheng (Natural Science). 2011(24):71-73

Table1 Bolt size Length/m The outer diameter/m Bolt NO.1 2.5 0.08 Bolt NO.2 3.0 0.08 Bolt NO.3 3.5 0.08 Bolt NO.4 3.0 0.07 Bolt NO.5 3.0 0.09 The definition of materials and mesh.
Because the model structure is symmetry and the shape is regular, so the selection of unit type is SOLID45 unit[4].The water hole diameter is 10mm, the ball tooth diameter is 10mm.The material is YG8, the material properties is linear elastic, density is 14.5g/cm3, the elastic modulus is 588GPa,the Poisson's ratio is 0.22.The rod material is steel Q345 manufacturing hollow bolt which is suitable for the manufacture of hollow bolt, the material properties is linear elastic, the density is 7.85g/cm3, the elastic modulus is 206GPa,the Poisson's ratio is 0.3.The bit materials is 20Ni4mn steel, the material properties is linear elastic, the density is 7.95g/cm3, the elastic modulus is 218GPa,the Poisson's ratio is 0.3[5].
Ma: Journal of North China Institute of Science and Technology, Vol. 4 (2007) No.4, p.29-31
Wang: Coal Science and Technology, Vol. 37 (2009) No.8, p.64-66

Composites Science and Technology 2015; 115: 43-51
Key Engineering Materials 2016; 713: 14-17
Mechanics of Materials 2006; 38(11): 1072-89
International Journal of Solids and Structures 2009; 46(14–15): 2809-21
Composites Part A: Applied Science and Manufacturing 2013; 55: 83-93

Introduction During construction and service of concrete bridges, they will be invaded by the environment and harmful chemical substances, and bear the function of cars, wind, and earthquake, while mechanical properties of materials are continuously deteriorated, resulting in damage of bridges structure.
When the surrounding temperature drops, pore water get cold and changed into the ice and expanded in volume, the internal structure of materials destroyed.
From the point of material science, if dynamic elastic modulus of concrete decreased up to 40% after freeze-thaw cycles, it is considered as damage of material [2].
[2] Nina Gong and Xila Liu: Sichuan Building Science, 2005, 31 (6): 144
[4] Chaoying Zou, Juan Zhao, Feng Liang, etal: Building Structures Journal, 2008, 29 (1):118-120.

Influence of the V-notch opening angle on critical applied force values for the crack initiation from the sharp V-notch Kateřina Štegnerová1,2,a, Luboš Náhlík1,2,b, and Pavel Hutař1,c 1CEITEC IPM, Institute of Physics of Materials, Academy of Science of the Czech Republic, Žižkova 22, 616 62 Brno, Czech Republic 2Institute of Solid Mechanics, Mechatronics and Biomechanics, Faculty of Mechanical Engineering, Brno University of Technology, Technická 2896/2, 616 69 Brno, Czech Republic astegnerova@ipm.cz, bnahlik@ipm.cz, chutar@ipm.cz Keywords: Sharp V-notch, crack initiation, stress singularity, generalized stress intensity factor.
In this paper the stability criterion applicable for structural components with sharp V-notch made of brittle material is considered.
Material was considered as homogenous linear-elastic and isotropic.
Knésl: International Journal of Fracture, Vol. 48 (1991), p. 79-83
Yosibash: Springer Science Business Media (2010)