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To meet the engineering applications, mechanical and physical properties of materials especially steels and their alloys are improved through thermal treatments.
Several patterns of thermal treatment sequences were executed with an aim to modify the material properties.
Conversely, to inspect and restore fatigue broken bridges, it is fundamental to access the chemical and mechanical properties of the materials of broken parts or hinges.
In future, experimental exploration can be conducted for various heat treatment cycles to establish valid fracture conditions of EN-31 steel and other engineering materials too, exhibiting challenging mechanical properties.
Zhou: Microstructural Evolution, Behavior of Precipitates, and Mechanical Properties of Powder Metallurgical High-Speed Steel S390 During Tempering.

Mechanical, physical and chemical properties of copper was investigated before and after immersion tests.
Investigations were carried out on change in morphological properties using optical microscope; change in chemical structure using FTIR; change in mass and volume by weight loss measurement; hardness changes using universal hardness tester; and change of chemical properties of the fuel blends using total acid number titration method.
These may give rise to potential problems such as interaction with metal surfaces and at the same time, degradation of fuel properties.
The properties of fuel blends taken for experiments were given in Table 1.
Therefore, fuel ethanol must have a specification to control its acidity and its blending properties.

Materials with or manufactured in the form of cellular structure have many advantageous properties that enable further potential engineering applications.
Such innovative product and the associated techno social factors promote the modernization of the respective construction technologies, in particular for extremely challenging built environment scenarios.
This problem is exacerbated with compressible soils affecting stability and excessive settlement causing discomfort and hazards to road users.
Usage and Characteristic Properties of Industrial Polymers Industrial Usage.
Significance of Cellular Shapes and Sizes Physical properties of cellular materials depend on shape, cell size and porosity.

A criterion for mechanical stability of the parent phase is: ( ) 02 0 2 2 >=      ∂ ∂ = A f ηη η , (3) The curve (a) in Fig.1 show schematically Eq.(1).
When both austenite and martensite are mechanical stable, Eq.(7a) and (7b) can be united into 0>a .
In more traditional alloy systems, such as iron-base alloys, the coefficient a shows normal weak negative temperature dependence; but in numerous systems, such as nonferrous alloys, oxides and other compounds etc. the coefficient a exhibits anomalous positive temperature dependence, which is usually observed in connection with the thermoelastic martensitic properties [18].
We select 50=κ in our calculation since the choice of κ does not affect the following discussion.
The chemical driving force of martensitic transformation and elastic constants of material are predominant factors to affect interfacial structure.

Introduction Ternary (Ti,Al)N solid solution with B1 NaCl phase has been successfully developed as hard coatings for mechanical processing cutting tools and anti-corrosion coatings for blades of aviation engine. [1-3].
In order to further improve the coating’s performance, especially oxidation-resistance and mechanical properties, quaternary (Ti,Al,X)N coatings were developed by introducing element X into (Ti,Al)N.
And recently there have been some research about the influence of incorporation of Nb into (Ti,Al)N on the structure and mechanical performance [8].
Many factors such as the texture orientation, stress state, crystlline size, solid solution strengthening and crystal defect affect the hardness of (Ti,Al,Nb)N.
The droplets almost did not affect the anti-oxidation performanc for the coatings.

Therefore, the surface properties of zirconia with clinical surface finishing are quite important for the wear of enamel opposing it.
In the present study, properties such as surface roughness, glossiness, crystal phase, and low temperature degradation of zirconia were studied.
It suggests that both factors accelerated the low temperature degradation of ZENOSTAR.
Murakami, Properties of dental polishing materials and devices, J.
Lo, Mechanical properties and resistance to hydrothermal aging of ceria- and yttria-doped tetragonal zirconia ceramics, Mater.

A long holding time cause to produce carbide that is undesirable since it results in the embrittlement of the structure and degrades the mechanical properties of ADI [3-8].
Mechanical properties of ADI depend on the austempered microstructure which, in turn, is a function of the alloying elements and the heat treatment parameters [4].
Impact properties.
Moreover, the duration of the austempering may affect the microstructure.
Bahrami, The role of austempering parameters on the structure and mechanical properties of heavy section ADI, J.

SPD microstructure positively affects mechanical properties and corrosion resistance by refining the microstructure and homogeneously distributing the eutectic phase.
The low degree of heat treatment ensures that most of the silicon does not turn into a spherical shape, which can adversely affect the mechanical properties.
Effect of ECAP on microstructure uniformity and mechanical properties of high purity aluminum.
ECAP effect on the micro-structure and mechanical properties of AM30 magnesium alloy.
Factors Influencing Tensile Mechanical Properties of Al-7Si-Mg Casting Alloys A356 / 7. 2012, 467–471

While the research on mechanical properties of 2524-T3 alloy limited.
Srivatsan studied on the influence of test temperature on high-cycle fatigue properties and fracture characteristics of aluminum alloy 2524 [3, 4].
The microstructures and tensile properties of cold-rolled and T3 treated 2524 aluminum alloy sheet with the thickness of 2 mm at different orientation were investigated by tensile test [7].
The material mechanical property is given in Table 1.
(2) The average value of with the thickness of 1.6mm is 161MPam1/2, so 2525-T3 aluminum alloy shows superior fatigue properties and higher strength.

Silica-based ceramic cores are used most often for their unique high-temperature properties.
Summary The effects of molecular weight of a binder on the properties of molten cores have been investigated
References [1] Wei Q, Zhong J W, Xu Z L, et al, Microstructure evolution and mechanical properties of ceramic shell moulds for investment casting of turbine blades by selective laser sintering, Ceram Int. 44(2018) 12088-12097
[4] Qin Y X, Pan W, Effect of silica sol on the properties of alumina-based ceramic core composites, Mater Sci Eng A-Sruct. 508(2009) 71-75
[6] Kim Y T, Yeo J, Lee S, et al, Influence of silicon carbide as a mineralizer on mechanical and thermal properties of silica-based ceramic cores, Ceram Int. 42(2016) 14738-14742