Steel KODUR 460MC under Creep Condition

2014 ◽  
Vol 635 ◽  
pp. 161-164
Author(s):  
Mária Mihaliková ◽  
Elena Čižmárová
Keyword(s):  
Tensile Test ◽  
Creep Condition ◽  
Deformation Texture ◽  
Central Crack ◽  
Test Conditions ◽  
Micro Alloyed Steel ◽  
Reduction Of Area ◽  
Mixed Status ◽  
Failure Character ◽  
Considerable Deformation

This paper analyses a failure of the micro alloyed steel (Re= 500MPa) at a temperature range 400 - 500 oC in the tensile test conditions and in the creep conditions. The failure character in condition tensile test was changeless and the fraction was transcrystalline ductile. The structure near a fraction showed a considerable deformation texture (reduction of area = 76%). The contraction and the fraction stress considerable was decreased by the increase of the time up to the fraction and the by the increase of temperature in the creep conditions. There were formed secondary intercrystalline cracks except the central crack in the area fraction. Intercrystalline cracks were started step by step to be connected each other. The fraction was started to obtain a mixed status alike and the intercrystalline (creep) fraction part was started to increase.

Some Fracture Mechanics Correlations

1968 ◽  
Vol 10 (4) ◽  
pp. 329-336
Author(s):  
L. P. Pook
Keyword(s):  
Mechanical Properties ◽  
Fracture Mechanics ◽  
Tensile Test ◽  
High Strength Steels ◽  
High Strength ◽  
Gauge Length ◽  
Published Data ◽  
Square Root ◽  
Beryllium Copper ◽  
Reduction Of Area

The results of tests on two high-strength steels, beryllium copper and perspex, together with some published data on high-strength steels were examined to see whether there was any relationship between the fracture mechanics parameter K1C and conventional mechanical properties. It was found that for steels and beryllium copper a correlation appeared to exist between K1C and the zero gauge length strain (= Z/(1 - Z) where Z is the reduction of area measured in a tensile test). It was also found that for constant, K1C was proportional to the square root of Young's modulus. The correlation band for steels was too wide for K1C to be estimated accurately from.

Single-strap adhesively bonded joints with square or tapered adherends in tensile test conditions

2013 ◽  
Vol 44 ◽  
pp. 105-114 ◽  
Author(s):  
Marin Sandu ◽  
Adriana Sandu ◽  
Dan Mihai Constantinescu ◽  
Dragoş Alexandru Apostol
Keyword(s):  
Tensile Test ◽  
Bonded Joints ◽  
Adhesively Bonded ◽  
Adhesively Bonded Joints ◽  
Test Conditions

scholarly journals Assessment and Comparison of the Mechanical Properties of Laser Welded Joints in Docol 1200M and Strenx S700MC Steel Alloy Grades Under Impact Loads

2020 ◽  
Vol 11 (1) ◽  
pp. 17-30
Author(s):  
Paweł PROCHENKA ◽  
Jacek JANISZEWSKI
Keyword(s):  
Tensile Test ◽  
Split Hopkinson Pressure Bar ◽  
Rolling Direction ◽  
Base Material ◽  
Welding Process ◽  
Tensile Tests ◽  
Material Strength ◽  
Hopkinson Pressure Bar ◽  
Test Conditions ◽  
Static Tensile

The article evaluates the strength and ductility of laser butt joints made of 2 mm Docol 1200 M martensitic steel sheets based on the hardness, quasi-static and dynamic tensile tests. Technological research of laser welding process was carried out on welding cell using IPG fiber – based welding source with 6 kW maximum power. The tests were carried out for parallel and perpendicular orientation of specimens by rolling direction. In addition, the obtained results were compared with the analogous results obtained during the Strenx S700 MC steel tests. Dynamic tests were performed using the tensile split Hopkinson pressure bar technique with strain rates of 103 s-1. The obtained results showed that the strength of Docol 1200 M under dynamic tensile test conditions are similar to the material strength under static tensile test conditions. However, due to the breaking of the specimens in the heat affected zone, the strength of the welded joint is much lower than in base material, which was not observed during the Strenx S700 MC steel tests.

Texture Investigations of Zircaloy-4 Tubes by Neutron Diffraction

2005 ◽  
Vol 105 ◽  
pp. 297-302 ◽  
Author(s):  
Maja Dlouhá ◽  
Stanislav Vratislav ◽  
Ladislav Kalvoda
Keyword(s):  
Neutron Diffraction ◽  
Tensile Test ◽  
Annealing Temperature ◽  
Tensile Force ◽  
Tube Axis ◽  
Main Interest ◽  
Test Conditions ◽  
Pole Figures ◽  
Force Direction ◽  
And Inversion

This article presents the results of texture investigations of Zircaloy-4 tubes. Neutron diffraction and inversion pole figures were used to chracterize the texture of samples. The main interest is given to the analysis of texture changes under different tensile test conditions including tensile force direction, annealing temperature and tensile test temperature. Four different specimens of different orientation to the tube axis were tested.

Neutron Diffraction Measurements of Deformation and Recrystallization Textures in Cold Wire-Drawn Copper

2005 ◽  
Vol 495-497 ◽  
pp. 919-926 ◽  
Author(s):  
Ph. Gerber ◽  
S. Jakani ◽  
Marie Helene Mathon ◽  
Thierry Baudin
Keyword(s):  
Neutron Diffraction ◽  
Static Recrystallization ◽  
Volume Fraction ◽  
Wire Drawing ◽  
Deformation Texture ◽  
Recrystallization Process ◽  
Cold Wire ◽  
Reduction Of Area ◽  
Intensity Evolution

The crystallographic texture of electrolytic tough pitch copper has been investigated by neutron diffraction after deformation by cold wire-drawing (reduction of area between 51 and 94 %) and after static recrystallization. The deformation texture characterized by a strong <111> fiber is reinforced with increasing strain, while the volume fraction of <100> fiber is reduced. In turn, we show that the <100> fiber is strongly reinforced after recrystallization when intensity of the <100> maxima increases with the level of deformation. Since the <111> fiber disappears first during annealing, the static recrystallization has been followed “in situ” by measurements of the diffracted intensity evolution in the center of the {111} pole figure. From these experimental data and taking into account the Arrhenius equation, the activation energy of the recrystallization process has been determined for each deformation rate.

scholarly journals The theory of wedge indentation of ductile materials

1947 ◽  
Vol 188 (1013) ◽  
pp. 273-289 ◽  
Keyword(s):  
Tensile Test ◽  
Plastic Material ◽  
Wedge Angle ◽  
Hardness Test ◽  
Ductile Materials ◽  
Plane Normal ◽  
Deformation Properties ◽  
Wedge Indentation ◽  
Reduction Of Area ◽  
Equivalent Reduction

The theoretical solution for the deformation produced by a rigid frictionless wedge penetrating a plastic material is presented in this paper. The solution determines the form of the lip and the deformation in the material squeezed out towards the surface. The variation with wedge angle of the force required for penetration is determined in terms of the yield stress in a tensile test. The deformation of a grid of squares on a plane normal to the axis of the wedge is shown in figure 9 for a 30° semi-angle wedge. Close agreement is obtained with experiments as shown by comparing figure 9 with the photographs in figure 10 (plate 4). Lead blocks were used with a grid of squares scribed before penetration. This investigation is a first step towards the correlation of hardness test results with the deformation properties of a material under other conditions of stress, e.g. the tensile test. The average strain due to wedge indentation is shown to correspond to an equivalent reduction of area in a tensile test which increases with increasing wedge angle.

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