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The Mg-12Gd-2Y-Sm-0.5Zr (wt. %) alloy was prepared by casting technology and the microstructure and mechanical properties of the alloy have been investigated.
High thermal stability and good mechanical properties are crucial for the wider future application of magnesium alloys.
However, the application of the Mg alloys is limited due to their low mechanical properties especially at elevated temperature.
It was found that the Mg-12Gd-2Y-Sm-0.5Zr alloy has excellent mechanical properties and anomalous temperature dependence of tensile strength in the temperature range from 20～300℃.
In this paper, the microstructure and mechanical properties of high performance Mg-12Gd-2Y-Sm-0.5Zr are investigated.

Among all the surface integrity properties, the residual stress profile is the dominating factor that influences the machined workpiece fatigue life [6, 7].
The material mechanical properties are also a strong function of the material microstructure states.
For example, the white layer formation in the machining process is reported to be a strong factor that influences the surface integrity properties [13].
The a phase has much superior material mechanical properties than the b phase.
[25] Lütjering, G., Influence of processing on microstructure and mechanical properties of (α+ β) titanium alloys.

They were then tested using conventional mechanical tests at 1070°C/140MPa to determine the effects of exposure on stress rupture properties.
Introduction Nickel-based single crystal superalloys are predominately used as materials for turbine blades in aero-engines because of their excellent mechanical properties at elevated temperatures.
Microstructure instability of single crystal at elevated temperature during service causing γ' coarsening and formation of topologically close packed (TCP) phases can be a concern for second generation single crystal alloys, since the stress rupture properties can be adversely affected.
The coarsening of the γ' precipitates was observed to be the main factor in the degradation of the stress ruptures properties.
The coarsening of the γ' precipitates was observed to be the main factor in the degradation of the stress rupture properties.

These filaments underwent different characterization techniques to test its mechanical and thermal properties.
The study also covers the testing of the mechanical properties of the developed PLA-MMT composites and compared it with the virgin PLA.
These pellets were then stored in a Ziplock bag and kept in an airtight container with desiccant to prevent any moisture from affecting the materials.
The mechanical properties such as tensile strength, strain at break, and the modulus of rupture are shown in Fig. 4.
Enhancement of mechanical properties of PLA/PCL (80/20) blend by reinforcing with MMT nanoclay.

Introduction Asphalt-aggregate interface is the decisive factor in asphalt concrete structures, which directly affects the performance of asphalt concrete, such as high temperature stability, water stability and structural strength, etc. [1].
Cohesive properties of the asphalt could according to the surface energy theory test to acquire.
Asphalt plays a role of binder in asphalt mixture, asphalt-aggregate bonding properties directly affect the life of asphalt mixtures.
And the changes of interface morphology depend on the factors of the volume fraction of asphalt and specimen molding time [12].
Therefore, developing a more reasonable test system, quantitative revealing the rule of asphalt-aggregate interface mechanical properties and establishing a more rational mesomechanics analysis model to predict asphalt macroscopic mechanical properties will undoubtly an urgent task in the industry.

The research on the calculation methods and the influential factors analysis of the mechanical joint persistence ratio of jointed rock mass JianYun Chen1, a, XiWei Hu2,b 1Earthquake Engineering Research Division, Dalian University of Technology, Dalian 116024, Liaoning, China 2Room 404, Building 18, West Living Zone, Dalian University of Technology, Dalian 116024, Liaoning, China aeerd001@dlut.edu.cn, bhit_19870101@163.com Keywords: Jointed rock mass; Joint persistence ratio; Monte-Carlo; Joint network.
The Monte-Carlo method is employed in simulating the joint network of jointed rock mass based on certain principles, and the calculation method on the mechanical persistence ratio is studied, furthermore, some research on the influential factors on the persistence ratio is performed, and the values of some empirical parameters are obtained, which assured the stability of the results.
Because of the mechanical differences between joints and rock bridges, we must consider the mutual affects of joints[1].
As in the rock, the distribution of joints is extremely complex, the early studies considered that determining the persistence ratio of rock was almost impossible, with the development of computational science in the field of rock mechanics, formed a Monte-Carlo method to simulate the joint network of rock gradually, and then we can study the mechanical properties of the rock mass.
(2)As can be seen from the results above, we should determine certain values of the simulation times, model size, projection width when we calculate the mechanical persistence ratio, and there’s little influence of the assumed average normal stress, but we don’t know the influence of some of the other factors , such as the inhomogeneity of the assumed average normal stress etc.

Thickness and bottle diameter influence of the mechanical properties of PET beer bottles are obtained.
This article is to analyze the thickness of the PET beer bottles and bottle outside diameter of its mechanical properties.
It first analyzes thickness and bottle diameter of the mechanical properties of PET beer bottles.
Conclusion Through the structural analysis of PET beer bottle, that affect the bottle resistance to internal pressure strength of the main structural factors are the thickness of the bottle and the bottle diameter.
The mechanical properties and body diameter of PET beer bottle effects got analyzed.

Wuhan 430000, China afxcfree@126.com, b951819553@qq.com, c87832369@qq.com Keywords: Inorganic polymer concrete, Experimental research, Mechanical properties, Compression strength, Flexural strength Abstract.
Its basic mechanical properties are studied by the cube compressive strength test, the drying-wetting cycle test and flexural strength test and compared with the ordinary concrete in the same sand ratio.
Its goal is to study the basic mechanical properties of inorganic polymer concrete whether adding mineral powder and to be compared with the same level of ordinary concrete.
All of these factors bring about the decrease of the bending tensile strength of thespecimens.
So it has adversely effect on its toughness properties.

Influence of Bi Addition on Wettability and Mechanical Properties of Sn-0.7Cu Solder Alloy M.I.I.
The effect of bismuth (Bi) micro-alloying additions on wettability and mechanical properties of Sn-0.7Cu lead-free solder were explored.
This in turn slowed the reaction rate between the bulk solder and the Cu substrate thus affecting the thickness of the interfacial IMC layer [18].
For instead, with Bi addition, the size of these IMC is significantly reduced, which leads to improvement in mechanical properties.
Fig. 5: Microhardness result of the Sn-0.7Cu+xBi (x=0.0, 0.5, 1.0, 1.5 and 2.0) solder alloys Summary The effect of Bi in Sn-0.7Cu solder alloy on wettability and mechanical properties has been investigated.

The load-depth curve in Fig. 1 is general raw data from the test, from which various mechanical properties can be obtained.
However, this standard deals only with hardness and elastic modulus, which are insufficient for evaluating mechanical properties.
Generally, tensile properties are considered the most important mechanical properties.
Therefore, in this study we investigated what properties affect the constants and determined their optimum values using finite element analysis.
Due to the small elastic deformation, the elastic property does not affect the plastic constraint factor.