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Effect of Al on the Microstructure and Mechanical Properties of Hot-Rolled Medium-Mn Steel D.T.
During deformation retained austenite transformed to martensite, resulting in excellent mechanical properties[2].
Many researchers added Al in medium Mn steel, hence obtained outstanding mechanical properties.
It has been known that there are many factors affecting the stability of retained austenite, such as chemical composition, grain size and morphology [14].
Effect of the Intercritical Annealing Temperature on the Mechanical Properties of 10?

The results show that there are several factors affect elastic modulus of the composite, including the adding proportion, elastic modulus, shape, size and tilt angle of the particles, etc.
During recent years, one of the research hotspots in this area was to investigate the influencing factors of the mechanical properties and their strengthening and toughening mechanisms.
Many researchers have established Axisymmetric single-cell model [3,6] , ellipsoid single-cell model considering the interaction between particles [7], randomly distributed spherical particles model [8] and serial sectioning method [9,10], etc, which simulated the tensile and fracture behavior of particle-reinforced metal matrix composites and analyzed the influence of certain factors including adding proportion, shape, size of reinforcement on mechanical properties of the composite.
Currently, the correlational research on the effect of attribute features, especially the elastic modulus of particle reinforcement on the mechanical properties is very lacking.
The effects of adding proportion, size and shape of the particles on the mechanical properties of the composites also need systematic research.

The soil drill into the earth, at a certain depth, took out a uniform soil column, then the soil is discharged from the pipe with rocker. 1.2 Sampling process Soil is an uneven one, the factors affecting it is perplexing.
Natural factorsincluding topography, parent material; also have factors.
Soil organic matterdirectly affects the soil physical and chemical properties, determination method for potassium dichromate volumetric method
In the test group, the mechanical composition of soilthickness difference, coarse grain large proportion, thus affecting the soil moisture characteristics.
Soil texture and water content are the main factors affecting the impact characteristics.

This research was study the effect of resistance spot welding (RSW) parameter on mechanical properties and macro structure.
Factors affecting the optimum were welding current of 14,500 amp. , welding time of 60 cycle and electrode force of 1.2 kN.
Optimization with Factorial Design When studying the effects of the factors that affect the response factors.
The result found that in each of the factors affecting the all response factors.
Factors affecting the tensile shear and nugget size are the optimum welding current 14,500 amp, welding time 60 cycles and electrode force 1.2 kN. were tensile shear 1.30 kN. and nugget size optimum 4.58 mm.

Results showed that the microstructural features such as phases, carbides, i.e. morphology and type, sub-grains and their boundaries and misorientation angles are the dominant factors influencing the mechanical properties.
In addition, ageing led to the reduction in the mechanical properties and hardness when compared to the as-produced condition.
In order to understand the carbide types affecting the materials properties EDS was conducted on the studied materials.
Room temperature mechanical properties.
Influence of aging time on a) hardness and b) mechanical properties.

This paper investigated the heat transfer and mechanical property of phase change material (PCM) walls and common wall.
The thermal properties of these PCMs are shown in the Table I.
Experimental Results of Mechanical Property.
The addition of phase change material is bound to affect the mechanical properties of the wallboard.
The mechanical property of PCM wallboard is one of the important factors that affecting the application feasibility of the wall.

Stability of mechanical properties is observed in temperature range from -40°C to 300°C [1, 2].
Moreover, duplex steels are much cheaper than high-nickel austenitic steels and this is caused, among other factors, by decreasing the nickel content as alloying element [2, 3].
Tested steel had the following mechanical properties: Rm = 923 MPa, R0.2 = 724 MPa, R1.0= 800 MPa, A5 = 34%.
Chemical composition of X2CrNiMoCuWN25-7-4 steel [mass %] C Mn Si P S Ni Cr Mo Cu W N 0.016 0.69 0.48 0.023 0.0005 6.95 25.55 3.66 0.66 0.58 0.24 Tests results Mechanical properties of welded joints.
Such ferrite content enables the achievement of proper structure and, as a consequence, the proper mechanical properties and resistance to corrosion.

The Properties and the Influence Factors of the White Layer in the Surface Grinding C.
The properties of the white layer in the surface grinding are described.
Tomlinson [2] indicated that the metallurgical changes associated with the formation of white layers clearly affect the surface properties of the material, and it has been shown that their presence decreases the resistance to fatigue.
In order to verify the hardness of the workpiece affects the properties of the white layer, an annealed workpiece was used in the experiment.
Conclusions The properties and the influence factors of the white layer in the surface grinding are discussed.

Analysis of the Factors Affecting Crack Resistance of Dam Concrete Gai-Xin Chen 1, a and Fu-Tian Jiang 1 1 China Institute of Water Resources and Hydropower Research (IWHR)， Beijing, 100038，People's Republic of China a chengx@iwhr.com Keywords: dam concrete; roller compacted concrete; crack; shrinkage; tensile strain capacity Abstract.
This paper summarizes the author's understanding about the factors affecting cracking-resistance of dam concrete, such as cold shrinkage, drying shrinkage, autogenous volume deformation and tensile strain capacity, etc.
The key is to properly treat all the factors that may cause cracking.
However, concrete has its own physical properties and its "brittleness" nature can't be altered.
The influence of environmental factors on surface concrete is severe for concrete placed,especially during late summer and early autumn.

This paper designed Poplar LVL production experiments under different process conditions, and measured the mechanical properties of poplar LVL specimens under different experimental conditions.
The result showed that, it is feasible that grey theory is used to analyze the influence level of production technology of poplar LVL on the mechanical properties.
Investigations show that, mechanical properties and engineering performance of LVL are affected by many factors such as wood species, veneer thickness and quality, processing variables, member size, in service environment and loading types [1-5].Different factors have different influence levels on the mechanical properties.
So it is feasible that grey relational analysis is used to analyze the influence level of production technology of poplar LVL on the mechanical properties.
This paper only had grey relational analysis of the influence level of four factors on the bending strength, the grey relational analysis of the influence level of other factors on the other mechanical properties remain further study.