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Material properties of the weld zones were determined by minitensile specimens.
The presented research activity tries to give basic knowledge on the crack behaviour in an idealized weldment under various load cases. 2 Material Properties of the Weld For a complex analysis of the weld mechanical properties of all its parts need to be known.
Along with the known hardness measurements a complete set of mechanical properties of an electron beam welded joint of bronze and steel was obtained.
With heterogeneous materials stress intensity factors cannot be determined with usual formulas.
The properties of the HAZ have partially different properties from the base materials.

Severe plastic deformation (SPD) has attracted interest as one of the breakthrough procedures to achieve further enhancement of mechanical properties for metals.
Since the microstructure affects mechanical properties of SPDed metals [2] [3], it is useful for material design to investigate microstructural mechanisms and factors which contribute to macroscopic properties.
Mechanical anisotropy of the rolled SUS 316L is investigated on the bases of obtained results.
It is predicted that mechanical anisotropy is introduced by cold-rolling.
Hocini, International Journal of Mechanical Sciences, 51 (2009) 797-806

The ECAP deformation occurs in a matrix that contains two channels of the same cross-sectional area and form an angle of Φ = 90° and Φ = 120°, the process can be repeated many times allowing to control the microstructure and properties of the materials.
As the cross-section of the sample remains approximately constant, the process can be repeated many times allowing control the microstructure and thus the final properties of the materials [4,5].
However, surface cracks will oxidize during reheating and, with the conformation, these oxides will settle into the resulting product, thus affecting the mechanical properties.
The primary globule size (GLS) and the roundness shape factor (SF) was measured using the ImageJ software on 14 micrographs.
The value of the shape factor (SF) indicates the globular structure.

In this paper the superplastic properties of a commercial 5083 aluminum alloy is studied.
It is well known that a primary factor in producing superplasticity is a fine grain size.
Grain refinement as a result of cold and hot working and recrystallization treatments, which called thermo-mechanical processing (TMP), has been used extensively in the development of superplastic properties [3-5].
Kaibyshev et al. [11] examined the superplastic properties and microstructural evolution of a 0.2% Zr and 1.6% Mn modified 5083 aluminum alloy.
It is well known that, in addition to affecting the grain size and cavitation, variations in the alloy composition and microstructure as well as small differences between sheets of nominally the same composition may also influence the superplastic formability [7].

Configuration and Material Properties of Single-lap Adhesive Cantilevered Beams Figure 1 shows the single-lap adhesive cantilevered beams studied in the present work.
The mechanical properties of the aluminium alloy were as follow: young’ modulus e=70Gpa; poisson’ ratio v=0.33.The adhesive applied was the mixture of epoxy and polyamide resin.
The mechanical properties of the adhesive investigated were: young’ modulus ead=2Gpa; poisson’ ratio vad=0.30;bonded thickness h=0.1,0.2,0.3,0.4,0.5mm;bondlines length l=10,20,30,40,50mm.
The result indicates that the transverse natural frequencies of the single-lap adhesive cantilevered beams are nearly not affected by bonded thickness.
Rao: Mechanical Vibrations(Tsinghua Univesity Press, Beijing 2009), in Chinese [6] X.

The modern SLM systems are intended for melting of a wide range of powder materials with different properties.
The temperature and temperature gradient determine the speed of phase transitions, chemical reactions, microstructure and properties of the material.
Under the laser processing the temperature evolution is one of the dominant factors with high temperature gradients.
The thermal properties of stainless steel INOX 304 L were as follows: a = 4,05*10-6 m2/s – thermal diffusivity, = 8,03 g/cm3 – density, c = 500 J/kg*K - heat capacity.
ISRN Mechanical Engineering 2012 (2012)

Considering the factors including specimen dimension, stress state and conversion equation, these methods are compared with each other [10].
Not only the pre-exponent factors are permitted to be distinctive (Bt=Bc) but also the stress exponent constants may be unequal (nt≠nc).
Determination of creep properties of a P91 weldment by small punch testing and a new evaluation approach.
A small cantilever beam test for determination of creep properties of materials.
Comparative Study on the Determination of Creep Properties by Using Different Types of Small Specimens.

If one considers axisymmetric forward extrusion, the main processing parameters which affect the resulting extrudate quality are; the press ratio, the die cone angle, the friction between the workpiece and the tooling, the mechanical properties of the material such as hardening and ductility characteristic, and the heating effects during forming. [1] Friction affects not only the quality of the workpiece in metal forming but also the forming force.
Friction was modeled by the Tresca model, i.e., by where m is the friction factor ().
To study how the extrusion force is affected by friction and the extrusion geometry (flat faced and conical die with 45° angle) for axisymmetric 2D extrusion, a number of simulations were run in which the friction was increased gradually from the ideal frictionless state up to a high friction state characterized by m=1.
For the case of forward extrusion considered here (extrusion ratio =25) FEA and theory predicts maximum extrusion load to be ~doubled when friction is increased from 0 up to maximum friction characterized by a friction factor equal to 1.
So in this case friction effects against the tooling seem to affect extrusion load as much as do deformation effects.

Based on nonlinear hardening during reverse loading and the change of the Bauschinger effect factor with plastic strain, reverse loading released strain energy of elastic responses of machined underlayer.
Introduction The mechanical state of the machined surface layer such as the residual stress and micro-hardness affects on the quality of the mechanical component.
In cutting processes, the layer affected by previous cutting may subject to cut again.
It is expected that in this paper to analysis the effect of cutting sequence from roughing to finishing on the mechanical state within machined layer.
Because in reversible cutting operation, based on nonlinear hardening during reverse loading and the change of the Bauschinger effect factor with plastic strain, reverse loading released strain energy of elastic responses of machined underlayer.

The results of many scholars show that Cu-Cr alloys are an excellent aging strengthening alloy, using deformation and heat treatment method are an effective way to refine the grain, improve the uniformity of the structure, the mechanical properties and conductivity of the alloys [5-7].
In the thermal deformation process of copper alloys, DRX is a phenomenon that changes its structure and properties [8].
Microstructure and properties of Cu-0.8Cr-0.2Zr alloy contact materials, Special-cast and Non-ferrous Alloys, 35(2) (2015) 137-139
Microstructure and properties of QCr0.8 copper alloy[J].
Research on dynamic mechanical properties of QCr0.8 copper alloy, Journal of Rocket Propulsion, 42(6) (2016) 57-61