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effects of welded microstructure on fracture toughness

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Author M.Rashid,L.E.Collins,Y.BianPublish Year 2014Tritium Effects on Fracture Toughness of Stainless Steel

May 12,2005·Delta-ferrite phase in the weld microstructure improved toughness provided no tritium was present in the microstructure.After a tritium-exposure-and-aging treatment that resulted in {approx}1400 atomic parts per million (appm) dissolved tritium,both weldments and base metals had their fracture toughness values reduced to about the same level.Author Noah Kohlhorst,Noah Kohlhorst,Angshuman Kapil,Zhangqi Chen,Anupam Vivek,Taeseon Lee,Ji-Cheng ZPublish Year 2021Microstructure and Impact Toughness of C-Mn WeldMicrostructure and Impact Toughness of C-Mn Weld Metals The formation of acicular ferrite in over half of the weld appears to be the key to improving impact toughness BY LE.SVENSSON AND B.GRETOFT ABSTRACT.The effect of variation in car­ bon and manganese contents on the mi­ crostructure and impact properties of allAuthor Pengkang Zhao,Chen Wei,Yan Li,Jun Tao,Chuanchen Zhang,Xudong Xiao,Min ZhangPublish Year 2021Effect of post weld heat treatment on microstructure and Dec 21,2016·The effect of post weld heat treatment on the microstructure and fracture toughness of friction welded joints of Ti-6.5Al-1Mo-1V-2Zr alloy was studied.The experimental results show that equiaxial grains were formed at the center of the weld metal while highly deformed grains were observed in the thermomechanically affected zone.The fracture toughness of the weld metal was lower than

Cited by 139Publish Year 1983Author J.H.Tweed,J.F.KnottEffect of Trace Element on Microstructure and Fracture

Abstract The microstructure and fracture toughness of weld metal under Ti-free and Ti-containing different fluxes were investigated in this study.It was found that the trace element Ti of flux in submerged arc welding produced significant influence on the fracture toughness.Cited by 14Publish Year 2015Author B.H.Tao,Q.Li,Y.H.Zhang,T.C.Zhang,Y.LiuEffect of weld thermal cycle on microstructure and Abstract In the present investigation,thermal simulated specimens were used to investigate the effect of welding cooling time and peak temperature on characteristic fracture toughness and microstructure feature of heat-affected zone (HAZ) for an 800 MPa grade high strength low alloy (HSLA) steel.It is found that the fracture toughness is the best for the simulated coarse-grained HAZ,when Cited by 151Publish Year 2008Author Yaowu Shi,Zhunxiang HanMicrostructure and Fracture Toughness of an SteelApr 19,2021·However,the microstructure of VFAW welds being inherently heterogeneous did result in large deviations of weld toughness values between tests within the same annealing conditions.This is observed by the weld toughness spread between the maximum and minimum values seen in Figure 7 as well as in Table III.This discrepancy is seen for the anneals at or below 500 °C as well as for the as-welded

Cited by 15Publish Year 1997Author K.Keshava Murthy,S.Sundaresan,N.B.PotluriEffects of Welded Microstructure on Fracture Toughness and

Tables 4 up to 6 show the data derived from the test curves for fracture toughness calculation,each for different zone,which are heat affected zone,base metal and center weld zone..Cited by 1Publish Year 2020Author Ke Xu,Tao Fang,Longfei Zhao,Haichao Cui,Fenggui LuEffect of microstructural features on the fracture Abstract The fracture toughness of weld fusion zones in a dilute,medium-strength alpha-beta Ti Al Mn alloy has been studied in relation to their microstructures.Welding was performed over a range of energy inputs using different techniques.The weldments were subjected to three different annealing treatments.It has been shown that the fracture toughness of all weld metals is greater than Cited by 1Publish Year 2021Author Noora Hytönen,Zai qing Que,Pentti Arffman,Jari Lydman,Pekka Nevasmaa,Ulla Ehrnstén,Pål EfsingThe effect of microstructure on the toughness of C-Mn Dec 31,1996·OSTI.GOV Book The effect of microstructure on the toughness of C-Mn-multirun weld deposit Title The effect of microstructure on the toughness of C-Mn-multirun weld deposit Full Record

Cited by 22Publish Year 2017Author Yi Tong Lin,Ming Chao Wang,Ming Chao Wang,Yu Zhang,Ya Zhang He,Dong Po WangEffect of heat treatment on the microstructure

Jan 28,2021·Impact toughness and fracture morphology.The fracture morphology has an important effect on impact toughness.The impact toughness of the joint without PWHT is very low compared with that of the BMs .The similar result is also found on the TC17 LFWed joint by Li et al..This can be attributed to the obvious brittle fracture of the joint.Cited by 2Publish Year 2016Author Yang Song,Bai Qing Xiong,Yong An Zhang,Xi Wu Li,Zhi Hui Li,Shu Hui Huang,Hong Wei Yan,Hong WeEffects of microstructure and strain ageing on toughness The effects of microstructure and prestraining and ageing on ductile-to-brittle transition temperature,fracture toughness and cleavage fracture resistance of a multi-pass low-alloy ferritic steel weld metal have been investigated.The weld metal simulated submerged arc welds used in the fabrication of Sizewell B power station reactor pressure vessel.Cited by 2Publish Year 2017Author Dong-Yeob Park,Babak Shalchi Amirkhiz,Jean-Philippe Gravel,Yiyu Wang,Leijun Li,Renata Zavadil,Estimated Reading Time 3 minsEffect of weld thermal cycle on microstructure and Oct 16,2008·Under thermal effect of welding,evident change of microstructure and property occurs in the base metal adjacent to the weld metal.Sometimes,the change of the microstructure may lead to local brittleness in heat-affected zone (HAZ).In addition defects,stress concentration and higher residual stresses are easy to coexist in the welded joint.

Cited by 69Publish Year 1999Author L.P.Zhang,C.L.Davis,M.StrangwoodEffect of reheating on microstructure and toughness of C

Jul 19,2013·Variations between the brittle fracture susceptibilities of as-welded and reheated materials,and the scatter in brittle toughness results,can both be qualitatively understood in terms of the model.Effect of reheating on microstructure and toughness of CMn weldCited by 6Publish Year 2016Author Sujun Wu,Bo Han,Dalong Zhao,Yingping Ji,Ling ShaoEstimated Reading Time 4 minsEffect of Trace Element on Microstructure and Fracture Abstract.The microstructure and fracture toughness of weld metal under Ti-free and Ti-containing different fluxes were investigated in this study.It was found that the trace element Ti of flux in submerged arc welding produced significant influence on the fracture toughness.Effect of Chemistry on the Fracture Toughness of Low Dec 09,2014·While chemistry is a factor,welding parameters can also be influential and affect the HAZ toughness.The present work compares the effect of C,Cr,and Mo on the girth weld HAZ fracture toughness of X70 in identical welds.Three pipes of size 48 OD × 0.528 WT with different combinations of C,Cr,and Mo were produced.

Effect of Cooling Time on Fracture Toughness at the

sensitivity of fracture toughness to cooling rates,and it has a much higher CTOD than all the DP600 steels in this study.The fracture toughness test results support the findings in the effect of welding heat input on the fatigue performance of components made of the three DP600 steels in a previous study by the author161.ItEffect of Deoxidizer on Microstructure and Mechanical Jun 23,2021·The results demonstrated that the microstructure of deposited metal was mainly composed of acicular ferrite and proeutectoid ferrite.With the increase of deoxidizer content,the toughness increases and then decrease,reaching the maximum of 33.45 J and 35.02 J at AgMg alloy and ferrotitanium content of 1.2% and 1.8%.Effect of Preheating Temperature on the Mechanical and microstructure [17].Hardness of the weld zone and HAZ depends on heat input,cooling rate,and peak temperature reached during welding [18].Though hardness testing provides a rough assessment of weld,other mechanical evaluations such as tensile,fracture toughness,and fatigue should be per- formed to obtain a comprehensive idea about weld qual-

Effect of TiN particles and microstructure on fracture

Thermally stable TiN particles can effectively pin austenite grain boundaries in weld heat-affected zones (HAZs),thereby improving toughness,but can also act as cleavage initiators.The HAZs simulated in a GLEEBLE 1500 TCS using two peak temperatures (T p ) and three cooling times ( 8/5) have determined the effects of matrix microstructure and TiN particle distribution on the fracture Effect of Two-Step Aging Process on Microstructure and In this paper,the effect of two-step aging treatment on microstructure and fracture toughness of 7085 aluminum alloy were investigated by using tear tests to carry out the fracture toughness tests of the alloy and using optical microscopy (OM),scanning electron microscopy (SEM) and transmission electron microscopy (TEM) to analyze the microstructure.Effect of microstructural features on the fracture Sep 01,1997·2.Differences in weld energy input among various welding processes,however,do not lead to significant differences in fracture toughness.3.Post-weld heat treatment causes a further increase in fracture toughness over the as-welded condition,which becomes even greater as the time and temperature of heat treatment is increased.

Effect of microstructures on impact fracture toughness of

Nov 01,1995·This work investigated cleavage fracture from a sharp crack under loading of very short stress intensity.The used material was low carbon steel for welding structure,SM50A.A main aim is to investigate the effect of microstructural properties,i.e.the grain size and the pearlite layer spacing on the impact fracture toughness.Effect of post weld heat treatment on microstructure and Dec 21,2016·The fracture toughness of the weld metal was lower than that of the thermomechanically affected zone under as-weld and post weld heat treatment conditions.With increasing temperature of post weld heat treatment,the fracture toughness of weld center and thermomechanically affected zone increased.Effect of post weld heat treatment on microstructure and The effect of post weld heat treatment on the microstructure and fracture toughness of friction welded joints of Ti-6.5Al-1Mo-1V-2Zr alloy was studied.The experimental results show that equiaxial grains were formed at the center of the weld metal while highly deformed grains were observed in the thermomechanically affected zone.The fracture toughness of the weld metal was lower than that of

Effect of weld microstructure on brittle fracture

Sep 09,2020·Abstract The effect of the weld microstructure and inclusions on the brittle fracture initiation is investigated in a thermally aged ferritic high-nickel weld of a reactor pressure vessel head from a decommissioned nuclear power plant.As-welded regions consist mainly of acicular ferrite and reheated regions mainly of polygonal ferrite.The fractographic examination of Charpy V-notch impact Effects of Heat-Affected Zone Microstructure on Fracture Apr 14,2017·Effects of Heat-Affected Zone Microstructure on Fracture Toughness of Two X70 Pipe Girth Welds.Dong-Yeob Park 1,Babak Shalchi Amirkhiz 2,Jean-Philippe Gravel 1,Yiyu Wang 3,Leijun Li 3,Renata Zavadil 2,Jie Liang 2,Pei Liu 2,Anqiang He 4 Muhammad Arafin 1 Metallurgical and Materials Transactions A volume 48,pages 32483260 (2017 Effects of Welded Microstructure on Fracture Toughness and Fracture toughness of three diffeent zones in welded API 5L-X65,namely base metal,heat affected zone and center weld,were studied in conjuction with the implementation of pipeline project for natural gas transmission in western part of Indonesia.ASTM standard method has been used for fracture mechanics tests from which the curves of load in kN vs.extension in mm have directed to the

Effects of Welded Microstructure on Fracture Toughness

Abstract--however,involes welding that change the microstructure Fracture toughness of three diffeent zones in welded API 5L-X65,namely certain zone of the steel pipe base metal,heat affected zone and center weld,were studied in conjuction with the implementation of pipeline project for natural gas transmission in western part ofEffects of post-weld heat treatment on fracture toughness May 14,2015·Abstract.The effect of post-weld heat treatment processing parameters on the microstructure,fracture morphology,fracture toughness and crack propagation direction of the linear friction welded joint for dissimilar titanium alloys was investigated.Results show that weld zone and one side of thermo-mechanically affected zone are weak zones for fracture toughness of linear friction welded joint for dissimilar titanium alloys after welding; post-weldInvestigation of microstructure evolution after post-weld Jan 05,2017·In this work,the effect of post-weld heat treatment (solid solution + artificial aging) on the microstructure and cryogenic fracture toughness of the weld metal of VPTIG welded AA2219 joints were investigated by using crack tip opening displacement (CTOD) test method.The samples were divided into three types (i) the weld metal of as-welded joint,marked as sample A; (ii) the weld metal of post-weld

Materials Free Full-Text Influence of Welding Speeds

In this paper,8.0 mm thickness 2205 duplex stainless steel (DSS) workpieces were welded with a keyhole tungsten inert gas (K-TIG) welding system under different welding speeds.After welding,the morphologies of the welds under different welding speed conditions were compared and analyzed.The microstructure,two-phase ratio of austenite/ferrite,and grain boundary characteristics of the Some results are removed in response to a notice of local law requirement.For more information,please see here.12345Next

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