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Experimental Research on Temperature Field in Ultrasonic Assisted Grinding Engineering Ceramics Guofu Gao 1,2,a , Chuanshao Liu1,b, Bo Zhao 1,c , Feng Jiao 1 , and Qinghua Kong2 1 School of Mechanical and Power Engineering, Henan Polytechnic University, Jiaozuo, China 2 School of Mechanical Engineering, Tongji University, Shanghai, China a gaogf@hpu.edu.cn, blcs@hpu.edu.cn, czhaob@hpu.edu.cn Keywords: Temperature field, Ultrasonic grinding, Engineering ceramics Abstract.
As one of the key factors grinding heat has a significant effect on the ground surface quality in grinding engineering ceramics using diamond grinding wheel.
Differences between mechanical and physical performances of ceramic materials and grinding parameters have important influences on the surface temperature distribution.
According to the results of orthogonal experiments on grinding parameters, the grinding depth is the most important factor affecting the grinding temperature on the workpiece surface.
Both of the factors made the surface temperature of grinding zone change slightly.

Influence of Coiling on Microstructural Evolution and Mechanical Properties of Strip-Cast Low-Carbon Low-Niobium Steel Lu Jiang1, *, Thomas Dorin1, Ross Marceau1, Nicole Stanford1, 2, Peter Hodgson1 1Deakin University, Institute of Frontier Materials, Geelong, Victoria 3216, Australia 2Department of Materials Science and Engineering, Monash University, Victoria 3800, Australia Keywords: direct strip casting; microstructure; precipitation; hardening mechanisms; low carbon steel Abstract.
Mechanical properties were evaluated by Vickers macrohardness measurements.
The results show that coiling treatment has a strong influence on the final microstructure and mechanical properties, thus highlighting the necessity to carefully design the coiling treatment.
This in turn results in differences in the final mechanical properties, which has been well studied for traditional hot-rolled steels [4, 5].
In general, several main strengthening factors are usually considered in low-alloy low-carbon steels: solid solution, grain size, dislocation and precipitation [10, 11].

Structure and functional properties of surface layer produced on cast aluminium light alloys by appliance of anodisation Jarosław Konieczny 1, a *, Krzysztof Labisz 1, b, Anna J.
Krasińskiego 8, 40-019 Katowice, Poland a jaroslaw.konieczny@polsl.pl, b krzysztof.labisz@polsl.pl, c anna.dolata@polsl.pl Keywords: anodisation, mechanical properties, roughness, surface treatment, aluminium alloys Abstract The aim of the work is presents the influence of casting method and anodic treatment parameters on properties, thickness and structure of an anodic layer formed on aluminium casting alloys.
In other words the applying of anodic layer does not affect the geometry profile of surface.
Labisz, Microstructure and mechanical properties of HPDL laser treated cast aluminium alloys, Materials Science and Engineering Technology 2014, Mat.
Sieniawski, Effect of morphology of eutectic silicon crystals on mechanical properties and cleavage fracture toughness of AlSi5Cu1 alloy, Journal of Achievements in Materials and Manufacturing Engineering, Volume 14, Issue 1-2, January-February 2006, pp. 31-36

The practical application has lay more attention on the evolution law of macro-physics, mechanical property of damage process, the great change of mechanical property of concrete can show that negative temperature brings about degradation to concrete structure.
In the fractal dimension of crack expansion form, there are information of crack quantity, crack length and tortuous degree of crack expansion path in the observation area of sample surface, and many factors as microscopic structure, loading condition.
Modulus of elasticity of concrete has a lot of factors that contains some factors affecting strength, the strength of concert in the negative temperature is very low, its volume expands when the water become ice, and there are many tiny crack inner concrete, which causes the damage of concrete inner structure; and with the increase of temperature to be positive, anhydrated cement particles inner concrete continue to hydrate, new gels form, structure damage inner concrete heals further, and the damage degree decrease [11,12].
Conclusions Mechanical property variation of high-strength concert, which is under standard curing and negative temperature, has been studied and the evolution of damage process based on mesoscopic damage mechanics.
Concrete structure, properties and materials ( Tongji University Press, Shanghai 1991) [3] Peter Grassl, Milan Jirásek.

In EDM processes, the machining conditions or the input factors are strongly affecting the quality of machined parts and machining expenditures [1].
Input factors No.
The factors are individually set up with three-level, as displayed in Table 1.
To reach those optimal factors, the correlation between the process factors at different levels and MRR is established employing the Taguchi method.
The results from model and experiment Objective properties Optimal process parameters Calculation Experiment Error (%) Ton2/Toff3/IP3/SP2/dw3 Ton2/Toff3/IP3/SP2/dw3 MRR (µg/s) 1.8877 1.7206 8.85 4.

Coiling temperature of 650oC gave the best combination of mechanical properties. 1 Introduction Energy conservation is a key research topic in the development of the automobile industry.
Therefore, the volume fraction, shape and hardness of phases are the main factors affecting the mechanical properties of wheel steel [6,7].
(a) 20 μm 5 μm (b) P PF 20 μm (c) 5 μm (d) P carbide PF 20 μm (e) 5 μm (f) PF B P carbide 20 μm (g) 5 μm (h) carbide PF B Fig. 1 The optical and SEM microstructures of experimental steels: (a, b) CT 650oC; (c, d) CT 600oC; (e, f) CT 540oC; (g, h) CT 430oC Table 2 Volume fractions of different phases at different coiling temperatures CT/oC PF/% P/% P and B/% 650 83.1 16.9 / 600 78.2 21.8 / 540 75.7 / 24.3 430 68.4 / 31.6 3.2 Effect of coiling temperature on mechanical properties, Fig. 2 shows the effect of coiling temperature on strength and the product of strength and ductility (tensile strength/MPa × elongation/%).
Fig. 2 Effects of coiling temperature on mechanical properties: (a) strength and product of strength and ductility; (b) impact energy of experimental steels Microstructure is the factor that has the most significant influence on impact toughness.
The main factors for the high strength of the experimental steel, therefore, are fine-grained microstructure and nano-scale (Nb,V,Ti)C precipitates. 400 nm (a) 100n m (b) Fig. 4 The TEM images of experimental steel (a) dislocations; (b) nano-scale precipitate (Nb,V,Ti)C In this study, the effects of microstructure on strength, plasticity, impact toughness and stretch flangeability were determined.

Mechanical behavior of the amorphous/nanocrystal Ni-Mo23.56 alloy coatings by electrodeposition Weizeng Chena, Hong Xu, Ning Li, Baode Jing College of Engineering of Zhejiang Normal University, Jinhua, China, 321004 a E-mail: jdxcwz@zjnu.cn Keywords: Amorphous/nanocrystal, Ni-Mo alloy, Mechanical behavior, Electrodeposition Abstract: The amorphous alloy application is limited because of its brittleness property.
Introduction The amorphous bulk alloy is widely applied because of its good physical-mechanical properties in recent years[1-3].
The deposited amorphous/nanocrystal alloy had the properties of the amorphous and nanocrystal characteristics.
Fig.4 σ~ε pattern of the deposit Fig.5 SEM image of the deposit fracture Regarding the galvanic deposit amorphous state nanometer crystal nickel molybdenum alloy, affecting the plating layer performance two important factors are the plating layer molybdenum content and the grain size.
Therefore the mechanical properties have the great scope enhancement shch as tensile strength, degree of hardness and so on.

Influence of the pre-hydrated cement suspensions on hardening cement paste properties is determined.
Duration of hydration was the variation factors of mixtures.
Influence on physical-mechanical properties was evaluated on cube specimens by size 20x20x20 mm obtained from normal consistency cement paste.
Physical properties was determined by a caliper and laboratory scales.
The mechanical properties research has shown compression strength increase for all specimens in different age (Fig. 3.).

The Midwest cities large engineering construction have mushroomed, these engineering investment big, affecting wide, in its construction or after completion of the construction process, form many large scale ,project more, factors complex, geological environment variable, saftey and use requirement different loess slope engineering.
The Influence Factors for Slope Failures in Loess Area Internal affecting factors Geologic structure.
Exterior factors Climatic factor.
Under the action of loess slope gravity stress, with the pressure action of the overlying soil the microstructure change of loess will cause the major change of loess’ physical and mechanical properties, so changes the soil structure.
The safety factors caculated by various of limit equilibrium method show in table 1, the maximum is 0.843 for the safety factors.

Mechanical properties of CT3 steel Standard Mechanical properties Yield limit (N/mm2) Tensile Strength (N/mm2) Elongation (%) ΓOCT 380 - 89  225 min 373 ÷ 461 22 min Measuring instruments.
The sample after tensile test to determine mechanical properties is shown in Fig.10.
Synthesis and analysis of parameters affecting tensile strength are shown in Table 5.
Synthesis and analysis of parameters affecting elongation are shown in Table 6.
Tensile test results with mechanical properties are synthesized and compared with the mechanical properties of the sample material (Table 1), with the table as shown inTable 8.