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The resulting mechanical properties are shown in Table 2, and the microstructure is shown in Fig. 2.
Mechanical properties of steels.
Tensile properties of the 30KhGSA-40KhMFA welded joint.
Paylasan, Effect of friction welding parameters on mechanical and microstructural properties of dissimilar AISI 1010-ASTM B22 joints, Welding journal. 90 (2011) 102–106
Hascalık, Effect of rotational speed on the interface properties of friction- welded AISI 304L to 4340 steel, Materials and Design. 28 (2007) 301-307

Research on Performance Effect Factors of flexural member for concrete filled rectangular steel tube Song Jiqiang1, a 1Architecture and civil engineering school , Inner Mongolia University Of Science & Technology, Baotou 014010, China a 624782193@qq.com Keywords: concrete filled rectangular steel pipe, flexural member, influencing factors, parameter analysis Abstract: Today large concrete filled rectangular steel tube members are widely used in large-scale civil engineering.
The main factors influenced the flexural member of the concrete filled rectangular steel tube are analysed in this paper.
Main factors influencing the concrete-filled rectangular steel tube The interaction between the steel tube and core concrete is mainly performed at the constraint function of the core concrete to the steel tube, which make the concrete material changed, strength increased, plasticity and toughness improved.
In this case, the flexural property of concrete-filled rectangular steel tube are affected by the nature of the steel tube and core concrete and the match of the geometric parameters and physical properties parameters.
Experimental study on flexural mechanical properties of concrete structures resisting rectangular steel pipe.Journal of .2006（3）：388-391

Some of the required data for this study include geological conditions, slope geometry, physical and mechanical properties of the rock from laboratory tests, and previous research findings.
Several factors affect slope stability, including geometry, material properties, discontinuity structure, rock mass, vibration, climate, and mining processes.[2].
In the laboratory, three rock samples were tested to determine their physical properties such as density, degree of saturation, void ratio, and porosity, as well as their mechanical properties like shear strength.
The physical properties of each sample were determined through physical property testing.
The Safety Factor (FS) value is determined using data collected from laboratory testing of the physical and mechanical properties of rocks, geometry data, and kinematic data.

Constitutive equation can mathematically describe the mechanical properties of metals as a function of temperature, strain rate, and strain[2].
In this paper, the material properties of 4Cr13 was analyzed, and the J-C model of 4Cr13 was obtained.
Its chemical composition and material properties are given in Table 1 and Table 2, respectively.
Table1 Chemical composition of 4Cr13stainless steel (%） Element C Si Mn Cr s p Ni Composition 0.36-0.45 ≦0.60 ≦0.80 12.00-14.00 ≦0.030 ≦0.030 <0.60 Table 2 Material properties of 4Cr13stainless steel Density (g/cm3) Elastic modulus（GPa） Poisson ratio Thermal conductivity Specific heat capacity (J/(kg*J)) Melting point (℃) 7.8 200 0.24 24.9(100℃) 460 1455 Results and discussion Static and dynamic mechanical properties.
Similarly, we can see that strain rate sensitive factors were decreased with increase in strain.

Fracture Risk Modeling in Pyrolyzed Phenolic Resin: Microstructure Prediction and Stress Concentration Factor Evolution via CNN-CVAE and FEM Wenhan Chen1,a, Shuhua Niu1,b, Dan Wang2,c, Cheng Li1,d, Dong Chen1,e and Jianwei Shi1,f * 1School of Mechanical and Power Engineering, Zhengzhou University, P.R.
Abstract: The microstructure of phenolic resin undergoes significant transformation under high-temperature pyrolysis, affecting its mechanical performance and fracture behavior.
Introduction Phenolic-based carbon fiber composites, known for their excellent thermal stability and mechanical properties, are widely used in the thermal protection systems of hypersonic vehicles.
During pyrolysis [1–7], the phenolic resin matrix undergoes significant pore evolution [8–11], which affects the connectivity of the microstructure and the macroscopic mechanical response, becoming a critical factor in fracture failure.
These changes have a pronounced impact on the mechanical response.

Although this alloy is difficult to cast, it has a particularly high response to age-hardening and therefore offers mechanical properties close to the wrought 2014 alloy.
In A201, trace additions of Ag promote greater response to age hardening (Table 1 shows its composition and typical mechanical properties) [17,18].
Mechanical properties of thixoformed A201 alloy using different die materials and different feedstock production routes as compared to 2014 wrought alloy.
The use of ceramic inserts had a beneficial effect on the mechanical properties as can be seen from Figure 5.
Nevertheless, if semi-solid processing of alloys or thixoforming is to ever make any inroads into full commercialization and more importantly find applications in the higher end of the market industries such as aerospace two factors are of great importance: 1) the creation of a data base with a wealth of consistent, repeatable properties, independently obtained and 2) clarity on the costs of the process which will of course directly affect the size of any potential market.

.% NaCl solution) was investigated, and its tensile mechanical properties were tested before and after corrosion.
The corrosion of reinforcing steel is one of main affecting factors to the duration of concrete structure, which has attracted people’s extensive attention.
There are two important factors to lead to the corrosion of reinforcing steel [1]: one is the carbonization of concrete, and the other is the inrush of chloride.
The self quality of concrete structure is also one of the main factors to cause the corrosion of reinforcing steel.
The tensile mechanical properties, including yield strength, tensile strength and elongation, are tested by a hydraulic pressure universal testing machine.

In order to retain excellent magnetic and mechanical properties, their shapes would be limited in small dimension, such as ribbons, wires or powders.
Mechanical Properties Firstly, Fig. 2 shows the strength dependence of the weight percentage of sodium silicate for different consolidation conditions.
There was too much coating agent in the core with 4 wt.% sodium silicate so the residual air was not a main issue affecting the Hc.
Inoue, Bulk amorphous and nanocrystalline alloys with high functional properties, Mater.
Masumoto, Mechanical properties of Fe-Si-B amorphous wires produced by in-rotating-water spinning method, Metall.

Grinding surface residual stress During the manufacturing process, the nanostructured ceramic coatings parts will be subjected to influence and affection from various process factors, after these affected factors has disappeared ( such as the external force is removed, the temperature reaches uniform, phase transition is completed), if above the influence and affection aren’t followed disappeared completely, there are still part of the influence and influence in the component, then this kind of residual influence and affection is called residual stress.
Because of the great difference of thermal physical and mechanical properties of ceramics , and influenced by the coating thickness and shape, the original stress state is different properties of different size on the surface of the specimen. the original stress state surface has an effect on the particle removal process, if it is original compressive stress, can suppress the extension of the grinding zone brittle crack and increases the ratio of microscopic plastic deformation, and thus it affects directly the grinding the measured value of the residual stress.
Grinding surface residual stress is one of the main indicators of the parts machined surface quality, it affects directly the mechanical, physical properties of the part, so it has guiding significance that analysing residual stress how to influence performance of nanostructured ceramic coatings , grasping fully the nature and law of residual stress, predicting machined surface quality of the parts.
Classification of grinding surface residual stress Existing state of residual stress is varied with the change of material properties, formation conditions, there are several classification methods as following.
According to the partitioning size of influential range, grinding surface residual stress can be divided into three categories of macro, micro and super micro residual stress, macro residual stress has an important influence on the mechanical properties and crack deformation, macro residual stress is called the first class of residual stress, it is distributed in the macro scope that there is balance in a larger range of many objects or grain range, its size, direction and nature can usually be measured by physical or mechanical methods.

This paper studies the influences of factors such as axial compressive ratio and shear wall thickness on the mechanical performance of the reinforced concrete column strengthening with shear wall under low-cyclic reversed loading.
Their mechanical properties are shown in Table 1.
Fig. 1 The sectional dimension and reinforcement of specimen [mm] Table 1 Mechanical properties of materials Materials fy [Mpa] Poisson ratio Elastic modulus [Mpa] Concrete -- 0.167 2.648×104 Longitudinal bar 335 0.3 2.0×105 Stirrup 335 0.3 2.0×105 Constitutive Relations of Materials Constitutive Relation of Concrete.
Taken the length of the shear wall as 200mm, and the axial compression ratio as 0.3 and 0.9, the influence of the thickness on the mechanical performance of two group reinforced column is analyzed.
Conclusions Axial compression ratio is the important factors that affect seismic performance of the components.