Search results

Characterization of Microstructure and Mechanical Properties of AA2219-O and T6 Friction Stir Welds D.
The microstructural and mechanical properties of the joints were analyzed to determine the effect of the FSW process.
Even though the microstructural properties of O alloys are shows better than the T6 alloys, their mechanical properties are not supporting with them.
Che, Improving mechanical properties of dissimilar material friction welds, Appl.
Shi, Empirical modeling for the effects of welding factors on tensile properties of bobbin tool friction-stir-welded 2219-T87 aluminum alloy.

Investigate the effect of several key factors on the forming force.
Examines the effects of several key factors on forging force.
The process has many advantages,for example,simple process route, good mechanical properties of products and Stable product quality, etc.
Fig.1 Wheels fill insufficient forging defects The impact on forming force from material temperature Temperature is the most critical factors affecting magnesium plastic.
Fig.6 Magnesium alloy wheels Product Wheels Product Performance Analysis Mechanical properties.

The change characteristics of mechanical properties of interface are discussed.
Potyondy studied the mechanical character of soil-concrete interface with direct shear device and discussed the influencing factors of interface strength [4].
However, there are almost no reports on the mechanical properties of interface between soil-macadam aggregate and concrete piles under varying water contents and macadam ratios.
The macadam ratio is an important parameter that affects the mechanical properties of soil-macadam aggregate and significant for the reinforcement design of the accumulative landslide in the reservoir area of Three Gorges.
(2) The mechanical properties of interface is controlled by gravel, clay and concrete and influenced by sliding and rolling of gravels during shear test

Factors affecting the performance of SIFCON In this section, it is discussed how the different compositions modify the properties of SIFCON.
There are many factors that directly or indirectly affect the properties of SIFCON; we will study the most important of those factors that have a direct influence on the mechanical properties of SIFCON.
Farsangi, “Mechanical Properties of SIFCON with Variation Steel Fiber Ratio and Nano Kaolin,” 2021
Rikhe, “EFFECTS OF REPLACEMENT OF METAKAOLIN WITH CEMENT ON THE MECHANICAL PROPERTIES OF SIFCON,” 2016.
Akçaözoğlu, “EFFECT OF BLAST FURNACE SLAG AND FLY ASH ADDITIVE ON MECHANICAL PROPERTIES OF SIFCON MATRIX,” EFFECT OF BLAST FURNACE SLAG AND FLY ASH ADDITIVE ON MECHANICAL PROPERTIES OF SIFCON MATRIX, 2021

In this work, the effect of isothermal heat treatments on microstructure evolution and mechanical properties after welding by induction of A37 pipeline steel have been studied by scanning electron microscopy, hardness measurements, and tensile tests.
The purpose of this present work was to study the effect of heat treatment on microstructures and mechanical properties after induction welding of A37 pipeline steel.
The variation in properties across the weld can be attributed to several factors, mainly to residual stresses just after welding.
On the other hand, other factors can contribute to this hardening like grain size, phase composition, metallic inclusions.
Conclusion In summary, the effect of isothermal heat treatments on microstructure evolution and mechanical properties after welding by induction of A37 pipeline steel have been studied by using optical microscopy, SEM, microhardness measurements, and tensile tests.

The properties of piezoelectric materials due to the effect of electrical, mechanical, thermal, radiation, and chemical parameters are systematized.
Until now, the problem of creating a unified model based on a systematic approach that takes into account the influence of heterogeneous factors leading to a change in the properties of piezoelectrics is urgent.
Systematization of the Properties of Piezoelectric Materials The systematization of the properties of piezoelectric materials is carried out according to the principle of assigning parameters to the following enlarged groups depending on the nature of physical quantities: group of electrical parameters (electric field strength, E; spontaneous polarization, P; frequency, f); group of mechanical parameters (deformation, x; mechanical stress, X); group of thermal parameters includes the temperature T, as well as the temperature of the phase transition TC; group of radiation parameters: X-ray dose, R; group of chemical parameters (percentage y of the component affecting piezoelectric properties; measure of sample defectiveness, z).
They are due to the influence on the measurement results of changing uninformative parameters (for a specific experiment) and external factors.
Conclusion Electrical, mechanical, thermal, radiation, chemical parameters affecting the properties of piezoelectric materials, causing their use in products of nano- and microsystem technology, are systematized.

This study attempts to compare the material properties of trabecular bone with regard to mechanical properties in axial compression and combined compression-torsion.
How superimposed axial compression and torsion loads would alter the axial mechanical properties is explained.
The apparent density of both testing conditions were almost the same and do not affect these mechanical properties.
Thus, for convenience of the study, the mechanical properties of combined loading considered only on compressive properties, apart from shear or torsional properties.
[6] Halawa, M., et al., The shear strength of trabecular bone from the femur, and some factors affecting the shear strength of the cement-bone interface, Archives of Orthopaedic and Traumatic Surgery, 92(1) (1978) 19-30

Microstructures and mechanical properties of Mg-10Gd-3Y-2Zn-0.5Zr alloy were investigated.
The alloy exhibited excellent mechanical properties by hot extrusion and heat treatment.
In this paper, microstructure and mechanical properties of Mg-10Gd-3Y-2Zn-0.5Zr alloy was prepared and its microstructure and mechanical properties were investigated.
Fig.5 Mechanical properties of the alloy Three factors may contribute to the excellent mechanical properties of the alloy: 1) Solid solution strengthening and precipitation strengthening.
In addition, the orientation of LPSO phase also affects the mechanical properties of the alloy to a large extent.

The purpose of the investigation carried out is the study of regularities in structural-phase changes and mechanical-chemical processes occurred in a surface layer under the influence of outer and inner technological factors.
At the activation molecules and atoms gain additional energy contributing to the negotiation of a potential barrier affecting a rate of chemical reactions.
The essence of the activation process at vibration mechanical-chemical processing (VMCP) consists in the application catalytic properties to a metal surface with respect to the reaction of zinc ions reduction.
It is seen from the equation (1) that the activity of ions can affect considerably the value of equilibrium potential.
Zinc coating applied upon metal surfaces under the influence of free-moving indenters possesses increased corrosion properties in comparison with coating obtained by a common technology at the expense of the absence of a hydrogenated layer. 2.

The aggregate and the cement were tested according to their physical and mechanical characteristics, while the properties of the hardened concrete were evaluated according to their mechanical resistance.
Table 1- Physical and mechanical properties of cement Physical and mechanical properties Standard Result Specific weight (g/cm³) NM 23 [5] 2.96 Compressive strength 7 days (MPa) NBR 7215 [6] 15 Compressive strength 14 days (MPa) 22 Compressive strength 28 days (MPa) 28 Figure 1 – Compressive strength test of cement.
The age and history of concrete affect its characteristics and properties, which qualify the concrete.
The knowledge of the properties, possibilities, limitations and also the conditioning factors, are elements which allow the engineers to choose the appropriate material to use in their works [4].
Absorption is affected by several factors [18]: - Constituent materials: water (quantity and purity); cement (quantity, composition and fineness); aggregates (number, type, size, moisture and impurities); and additives (reactive or inert)