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Numerical analyses, such as the one presented in this work, will serve to close the knowledge gap concerning the correlation between k, UCS and other material properties of rocks.
Failure load is another parameter which affect UCS and Is (50) (Eq. 1).
This value can be controlled by changing microscopic parameters shown in Table 1 which is changed based on material properties.
In order to estimate UCS, index-to-strength conversion factors are used.
These factors vary depending on rock type.

The overall creep properties of HAZ are worse than those of the weld metal.
Among the HAZ structures, fine grained HAZ has the worst creep properties.
The chemical compositions and the mechanical properties of the base metal are listed in table 1 and table 2 respectively.
As mentioned above, although the creep properties are affected by various factors, the major factor characterizing final properties is microstructure.
Furthermore, these stress exponents can be largely affected by various factors, such as the test temperature, precipitation behavior of the microstructures, and other things.

Effect of Experimental Factors on Hardness Measurement Using the UCI Technique Peter Burik1, a and Ladislav Pešek2, b 1Technical University of Liberec, Faculty of Mechanical Engineering, Department of Material Science, Studentská 2, 461 17 Liberec, Czech Republic 2Technical University of Košice, Faculty of Metallurgy, Department of Materials Science, Letná 9, 042 00 Košice, Slovak Republic apeter.burik@tul.cz, bladislav.pesek@tuke.sk Keywords: UCI technique, DP steel, IF steel, structural steel Abstract.
The work experimentally analyses the effect of various factors on measured hardness values on thin steel sheets by Ultrasonic Contact Impedance (UCI) technique.
The UCI hardness may depend on some factors, therefore optimal measurement conditions must be determined.
Thickness t and mechanical properties of the steels are in Table 1.
a) b) Fig. 3 Microstructure of used steels: a) Steel XSG, b) Steel HR 45 Table 1 Mechanical properties, grain size and indent size of used steels Steel Rp0.2 [MPa] Rm [MPa] A80 [%] HV 1 n t [mm] grain size [µm] indent size [µm] XSG 177 286 47.2 120 0.211 1.95 22 112 HR 45 360 Re 449 27 179 0.139 1.80 8 91 Results Distance between indents: Indentations on sheet surface without zinc coating were realized with different spacing between the indents centers (0.2; 0.3; 0.5 and 0.7 mm).

The mechanical properties were significantly affected by the iPP content.
Thus, an efficient method to improve the mechanical properties of HDPE monofilaments by introducing iPP component was established.
The effect of the iPP content on crystallisation, dynamic mechanical relaxation behavior and mechanical properties was investigated.
Fig. 6 Frequency of blending monofilaments as a function of a-relaxation temperature 3.4 Tensile mechanical properties of HDPE/iPP blending monofilaments The tensile mechanical properties of HDPE/iPP blending monofilaments are given in Table 3.
The mechanical properties were significantly affected by the iPP content.

Innovative ultra high-strength steels have excellent mechanical properties which commonly relate to the material’s martensitic microstructure.
Micrographs presented in Fig. 5 show that these improved mechanical properties come along with, or are caused by, a fine-grained martensitic microstructure of the steel.
Further experiments showed that the strengthening, and its values, were dependent on basically two factors, i.e. the applied strain and the temperature control during the quenching process.
Downstream heat treatment must be avoided in order to maintain the improved mechanical properties.
As a result, innovative thermo-mechanical hardening operations have been studied which provide even better mechanical properties than pure thermal treatment.

Abstract The mechanical properties mainly tensile properties, impact toughness and high-cycle fatigue properties, of two-phase Al-20Zn alloy subjected to severe plastic deformation (SPD) via equal-channel angular extrusion (ECAE) using route A up to 2 passes were studied.
Unfortunately, their mechanical properties are still inadequate for many engineering applications particularly in as-cast condition.
Mechanical properties and deformation behavior of ECAE processed Al-20Zn alloy were affected strongly by the number of passes.
Table 1.Mechanical properties of as-cast and ECAE processed Al-20Zn alloy obtained by hardness, tensile and charpy tests.
It is well known that these factors have considerable effect on mechanical properties especially the fatigue performance of metals and alloys [6].

China azjmg@gxu.edu.cn Keywords: high-aluminum zinc-based alloys; mechanical properties; microstructures Abstract.
Results and Analysis The influence of Al-content on mechanical properties.
It can change the type, quantity of primary phase and the amount of eutectics, which affects the mechanical properties of alloy and casting defects.
Effect of temperature on the mechanical properties.
The influences of temperatures on mechanical properties can be seen in Figure 2 and figure 3, respectively.

It is favorable to select a relative higher content of Al-10Sr addition to improve the mechanical properties of the spot welded magnesium alloy joints.
And the grains’ coarsening is very detrimenal to mechanical properties of spot welded magnesium alloy joint, which is attributed to epitaxial growth from the unmelt base metal.
The present work investigates the effect of the content of Al-10Sr on the microstructure and mechanical properties of resistance spot welded magnesium alloy joints.
Its purpose was to better understand the mechanism of the inoculation on the nugget and provide some foundation for improving mechanical properties of the magnesium alloy joints.
It is favorable to select relatively high amount of Al-10Sr addition for improving mechanical properties of spot welded magnesium joint.

Anisotropic Mechanical Properties of Pure Magnesium Analyzed by In situ Nanoindentation Jiří Bočan1,a,*, Jan Maňák1,b and Aleš Jäger1,c 1Laboratory of Nanomaterials and Interfaces, Institute of Physics of the AS CR, v.v.i., Na Slovance 1999/2, 182 21 Praha 8, Czech Republic abocanj@fzu.cz, bmanak@fzu.cz, cjager@fzu.cz Keywords: In situ nanoindentation, EBSD, mechanical properties anisotropy, pure magnesium Abstract: In this work, correlation between nanomechanical properties and crystallographic orientation of grains in 99.9 % magnesium is presented.
Introduction During past two decades, nanoindentation proved to be a convenient technique for measurement of mechanical properties of various materials at the micrometer and sub-micrometer length scales.
However, one of the main disadvantages is the hcp structure which causes their anisotropic properties.
The effects affecting the obtained results were also discussed.
Brown, The effect of crystallographic orientation on the mechanical properties of titanium, J.

The microstructure and mechanical properties of the joints obtained with different heat input were analyzed.
More energy and environment factors have been taken into consideration to pursuit the maximizing of benefit.
When joining the two different metals brittle intermetallic compounds at the interface formed by reaction between aluminum and iron and the brittle compound seriously affect the mechanical properties of joints[2], so joining aluminium to steel is difficult and challenging.
The microstructure and the phase constitution were studied by OP, SEM, EDS and XRD, and the mechanical properties of the joints were also analyzed.
Fig. 3 Elemental line scanning analysis of the interface （2θ/） Fig.4 XRD analysis of the interface Mechanical properties of Al/Steel joints.