PDF Toughness anisotropy in X70 and X80 linepipe steels

Get Price Now

steel - MeeTinG THe neeDs of An eVolVinG linepipe

Linepipe steel grades such as the following A relatively high design pressure of 15MPa compared to 10MPa or less that is characteristically used in most parts of the world; The transmission of rich gas that places special demands upon fracture toughness; High strength levels typically X70 moving to X80Understanding mechanical property anisotropy in high The anisotropy in yield strength and Charpy impact toughness of X70-Nb and X80-NbMo microalloyed linepipe steels was examined by using orientation distribution function analysis.The texture fibers of X70 and X80 microalloyed steels were similar but with significant differences in the intensity.Understanding mechanical property anisotropy in high The anisotropy in yield strength and Charpy impact toughness of X70-Nb and X80-NbMo microalloyed linepipe steels was examined by using orientation distribution function analysis.The texture fibers of X70 and X80 microalloyed steels were similar but with significant differences in the intensity.

The tensile properties and toughness of microstructures

The tensile properties and toughness of microstructures relevant to the HAZ of X80 linepipe steel girth welds Creator Gaudet,Michael J.Publisher University of British Columbia Date Issued 2015 Description In the transportation of oil and gas products from and over remote locations,such as Canada's Arctic environment,pipelines are used.Some results are removed in response to a notice of local law requirement.For more information,please see here.Previous123456NextMechanical Properties Anisotropy in X80 Line Pipes The anisotropy of tensile properties and impact toughness of X80 ferrite-bainite pipeline steels was investigated.The lowest strength values were found in longitudinal (L) direction,medium in the direction of wall thickness (Z-direction),the highest in transverse (T) direction.Some results are removed in response to a notice of local law requirement.For more information,please see here.12345NextMechanical Properties Anisotropy in X80 Line Pipes The anisotropy of tensile properties and impact toughness of X80 ferrite-bainite pipeline steels was investigated.The lowest strength values were found in longitudinal (L) direction,medium in the direction of wall thickness (Z-direction),the highest in transverse (T) direction.

Some results are removed in response to a notice of local law requirement.For more information,please see here.Role of delamination and crystallography on anisotropy of

The orientation dependence of Charpy toughness has been investigated in API-X80 linepipe steel.The occurrence of delamination and preferential alignment of {1 0 0} cleavage planes are found to contribute to the observed anisotropy in Charpy properties.Role of Delamination and Crystallography on Anisotropy of Abstract.The orientation dependence of Charpy toughness has been investigated in API-X80 linepipe steel.The occurrence of delamination and preferential alignment of {100} cleavage planes are found to contribute to the observed anisotropy in Charpy properties.

Review Mechanical Anisotropy in Steels for Pipelines

rolled linepipe steels.This process has a cost advantage relative to one in which the steel is seam welded after bending into a tubular shape.However,one particular problem associated with the steels used to fabricate the pipes is that of the anisotropy of mechanical properties,especially the toughnessPredictions of toughness and hardness by using chemical Aug 26,2014 PDF Toughness anisotropy in X70 and X80 linepipe steels#0183;Artificial neural networks with multilayer feed forward topology and back propagation algorithm containing two hidden layers are implemented to predict the effect of chemical composition and tensile properties on the both impact toughness and hardness of microalloyed API X70 line pipe steels.The chemical compositions in the forms of carbon equivalent based on the International Institute of Microstructure,Texture Mechanical PropertiesFigure 1.Anisotropy in Charpy impact energy for steel X80 .The temperature dependence of toughness anisotropy of pipeline steel grade API-X70 is very weak and orientation dependence is characterized by decreased toughness in the transverse direction.(Fig.2).It is important to mention that the material displays very high toughness even at

Microstructure,Texture Mechanical Properties

Figure 1.Anisotropy in Charpy impact energy for steel X80 .The temperature dependence of toughness anisotropy of pipeline steel grade API-X70 is very weak and orientation dependence is characterized by decreased toughness in the transverse direction.(Fig.2).It is important to mention that the material displays very high toughness even at Microstructure characteristics and mechanical properties Apr 12,2012 PDF Toughness anisotropy in X70 and X80 linepipe steels#0183;The relation between microstructure characteristics and mechanical properties of X80 pipeline steels was investigated using optical microscopy,scanning electron microscopy,etc.It is shown that the structure consists of polygonal ferrite (PF),quasi-polygonal ferrite (QPF),acicular ferrite (AF),and granular bainitic ferrite (GF).With increasing volume fraction of M-A islands (below 3% Microstructure and Properties of Low Manganese API X70 Abstract.The microstructure and properties of a low manganese (0.91.0%Mn) X70 pipeline steel for sour service application was investigated.The microstructure of thermomechanically processed X70 pipeline steel primarily consisted of acicular ferrite (AF) together with small fraction of polygonal ferrite(PF),degenerated pearlite (DP) and martensite/austenite (M/A) constituent.

Microstructure - Texture Related Toughness Anisotropy of

The mechanical anisotropy of hot rolled coils for linepipe grades in the range between X52 and X80 have been investigated in terms of tensile strength and Charpy impact toughness.Microstructure - Texture Related Toughness Anisotropy of The dependence of Charpy toughness on the microstructure and texture of two industrial grades of API -X80 pipeline steel with a thickness of 15 and 17 mm,respectively,were studied in this work.Mechanical Properties of High-Nb X80 Steel Weld Pipes for The mechanical properties of steel pipe have great effects on the integrality and operation safety of gas transmission pipeline.In order to reduce the cost of the steel pipe,the high-Nb X80 pipeline steels with the different alloying systems have been used in the Second West-to-East Gas Transmission Pipeline Project.Nevertheless,an investigation into the effects of chemical composition on

Mechanical Properties of High-Nb X80 Steel Weld Pipes for

The mechanical properties of steel pipe have great effects on the integrality and operation safety of gas transmission pipeline.In order to reduce the cost of the steel pipe,the high-Nb X80 pipeline steels with the different alloying systems have been used in the Second West-to-East Gas Transmission Pipeline Project.Nevertheless,an investigation into the effects of chemical composition on Mechanical Properties and Bending Behaviors of Low API-X70 and X80 steel with good low temperature toughness were developed.The microstructure and mechanical properties of API-X70 steel plate and pipe were investigated and the buckling behavior of X80 steel pipe was evaluated through large scale deformation tester.API-X70 steels with 30 mm thickness were manufactured by finished rolling below Mechanical Properties and Bending Behaviors of Low API-X70 and X80 steel with good low temperature toughness were developed.The microstructure and mechanical properties of API-X70 steel plate and pipe were investigated and the buckling behavior of X80 steel pipe was evaluated through large scale deformation tester.API-X70 steels with 30 mm thickness were manufactured by finished rolling below

Mechanical Anisotropy in Steels for Pipelines

X70 482 565 90 X80 551 620827 93 Table 2 Highstrength steel pipeline projects over the per iod 20072012 [1].The X100 grade is at atrialstage.Region Length / km Steel North America 11,000 X80/X100 Russia 2,000 X80 China 8,000 X80 Europe 500 X80 2Mechanical Anisotropy in Steels for PipelinesThe toughness anisotropy associated with ductile fracture correlates with the {112} PDF Toughness anisotropy in X70 and X80 linepipe steelslt;110 PDF Toughness anisotropy in X70 and X80 linepipe steelsgt; component,and for cleavage fracture with the {001} PDF Toughness anisotropy in X70 and X80 linepipe steelslt;110 PDF Toughness anisotropy in X70 and X80 linepipe steelsgt; and {110} PDF Toughness anisotropy in X70 and X80 linepipe steelslt;001 PDF Toughness anisotropy in X70 and X80 linepipe steelsgt; components if they exist.84) Ju et al.also reported that the anisotropy of toughness at room temperature might be related to the distribution of {110} planes as a function Mechanical Anisotropy in Steels for PipelinesThe toughness anisotropy associated with ductile fracture correlates with the {112} PDF Toughness anisotropy in X70 and X80 linepipe steelslt;110 PDF Toughness anisotropy in X70 and X80 linepipe steelsgt; component,and for cleavage fracture with the {001} PDF Toughness anisotropy in X70 and X80 linepipe steelslt;110 PDF Toughness anisotropy in X70 and X80 linepipe steelsgt; and {110} PDF Toughness anisotropy in X70 and X80 linepipe steelslt;001 PDF Toughness anisotropy in X70 and X80 linepipe steelsgt; components if they exist.84) Ju et al.also reported that the anisotropy of toughness at room temperature might be related to the distribution of {110} planes as a function

Effects of microalloying and hot rolling parameters on

A comparison of toughness requirements for API X70 and X80.137. extremely low temperatures below -100 PDF Toughness anisotropy in X70 and X80 linepipe steels#176;C no toughness anisotropy has been observed.The addition of microalloying elements,such as Nb,Ti,Mo and V which precipitate in austenite Chemical composition of the high grade linepipe steels were 0.07%C 1.85%Mn Effect of hot deformation and crystallographic texture on Mar 01,2019 PDF Toughness anisotropy in X70 and X80 linepipe steels#0183;Reduced anisotropy in impact toughness for X70 steel compared to that of Ti + Nb steel,is due to 1.5 PDF Toughness anisotropy in X70 and X80 linepipe steels#215; stronger {332} PDF Toughness anisotropy in X70 and X80 linepipe steelslt;113 PDF Toughness anisotropy in X70 and X80 linepipe steelsgt; and {554} PDF Toughness anisotropy in X70 and X80 linepipe steelslt;225 PDF Toughness anisotropy in X70 and X80 linepipe steelsgt; component over {112} PDF Toughness anisotropy in X70 and X80 linepipe steelslt;110 PDF Toughness anisotropy in X70 and X80 linepipe steelsgt; and {113} PDF Toughness anisotropy in X70 and X80 linepipe steelslt;110 PDF Toughness anisotropy in X70 and X80 linepipe steelsgt; component.For a given mill speed and cooling rate,the strain and temperature of hot deformation in the finishing stands plays a pivotal role in controlling the hot Correlation of microstructure and charpy impact properties Jun 15,2007 PDF Toughness anisotropy in X70 and X80 linepipe steels#0183;The steels used in this study are API X70 and X80 grade steels having a yield strength level of 483 MPa (70 ksi) and 552 MPa (80 ksi),respectively,and their chemical compositions and rolling conditions are shown in Table 1,Table 2 and Fig.1.An overall grain refinement effect was expected by rolling with a high rolling reduction ratio in the non-recrystallized region of austenite after

Comparative study of tensile and charpy impact properties

The X80 steel remains finer and more dispersed precipitates compared to the X70 steel.As a result,the tensile properties of X80 steel are higher than those of X70 steel.The Charpy absorbed energies of X70 and X80 steels at -10 PDF Toughness anisotropy in X70 and X80 linepipe steels#176;C reached 436 and 460 J,respectively.They reached 433 and 461 J at Anisotropy of Mechanical Properties of API-X70 Spiral The effects of microstructure and texture on the toughness anisotropy of two API-X70 pipeline steels were investigated.One steel contained no nickel (0Ni) and the other contained 0.3 wt pct nickel (0.3Ni).Charpy V-notch impact testing was conducted on plate samples for both steels in three directions longitudinal (L),transverse (T),and diagonal (D) with respect to the rolling direction.Anisotropy of Mechanical Properties of API-X70 Spiral The effects of microstructure and texture on the toughness anisotropy of two API-X70 pipeline steels were investigated.One steel contained no nickel (0Ni) and the other contained 0.3 wt pct nickel (0.3Ni).Charpy V-notch impact testing was conducted on plate samples for both steels in three directions longitudinal (L),transverse (T),and diagonal (D) with respect to the rolling direction.

Anisotropy of Mechanical Properties of API-X70 Spiral

The effects of microstructure and texture on the toughness anisotropy of two API-X70 pipeline steels were investigated.One steel contained no nickel (0Ni) and the other contained 0.3 wt pct nickel (0.3Ni).Charpy V-notch impact testing was conducted on plate samples for both steels in three directions longitudinal (L),transverse (T),and diagonal (D) with respect to the rolling direction.Anisotropy of Charpy Properties in API-X80 SteelsAnisotropic behavior in Charpy toughness of API-X80 steel Summary 2010 Autumn Conference of the Korean Institute of Metals and Materials The anisotropy of Charpy properties in API-X80 steel was investigated.API-X80 steel has two main factors for toughness anisotropy,the one is the delamination phenomenon and the other is the texture.Alloy Designs for High Strength Oil and Gas Transmission ALLOY DESIGNS FOR HIGH STRENGTH OIL AND GAS TRANSMISSION LINEPIPE STEELS Douglas G.Stalheim1,Keith R.Barnes2,Dennis B.McCutcheon3 1DGS Metallurgical Solutions,Inc.,16110 NE 4th Street,Vancouver,WA 98684 USA,Ph.(360) 713-2407,Fax (360) 882-1775,[email protected],dgsmet

Alloy Designs for High Strength Oil and Gas Transmission

ALLOY DESIGNS FOR HIGH STRENGTH OIL AND GAS TRANSMISSION LINEPIPE STEELS Douglas G.Stalheim1,Keith R.Barnes2,Dennis B.McCutcheon3 1DGS Metallurgical Solutions,Inc.,16110 NE 4th Street,Vancouver,WA 98684 USA,Ph.(360) 713-2407,Fax (360) 882-1775,[email protected],dgsmet(PDF) Toughness anisotropy in X70 and X80 linepipe steelsToughness anisotropy in X70 and X80 linepipe steels D -W a Suh.Jin Ho Bae.22.64; POSCO Research Institute; H K D H a Bhadeshia.Download full-text PDF Broken X80 and X70 steel Charpy (PDF) Mechanical and Metallurgical Properties of Grade X70 Oct 01,2017 PDF Toughness anisotropy in X70 and X80 linepipe steels#0183;This paper describes the design concept and qualities of both base materials and weld joints of POSCO's API-X80 steel pipes.Until recently X70 steel has been the generalized grade for linepipe steel.

(PDF) Mechanical Anisotropy in Steels for Pipelines

Download full-text PDF Read full The orientation dependence of Charpy toughness has been investigated in API-X80 linepipe steel.The occurrence of delamination and preferential alignment of {1 (PDF) Effect of microstructure and crystallographic The combined effect of microstructure and crystallographic texture on the toughness anisotropy of API 5L X46 steel was studied.The steel exhibited microstructural banding along the 0 PDF Toughness anisotropy in X70 and X80 linepipe steels#176; direction and near random texture in the material.The mechanical

Main Products