Effect of friction time on flash shape and axial shortening of linear friction welded 45 steel

Li, Wenya; Ma, Tiejun; Yang, Siqian; Xu, Quanzhou; Zhang, Y.; Li, J.L.; Liao, H.

doi:10.1016/j.matlet.2007.05.037

Cited by 87 publications

(32 citation statements)

References 6 publications

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“…In previous linear and rotary friction welding studies, it was reported that flash morphologies depend on material type: Ti alloys exhibited a single joined flash, [30,35] while other alloys such as plain carbon steels, [36] stainless steels, [37] Al alloys, [38] and INCONEL 718 [27] showed a double flash extruded from each weld half. The results obtained in the present study confirm the occurrence of a double flash morphology in WASPALOY.…”

Section: A Macroscopic Examinationmentioning

confidence: 99%

Mechanical Property and Microstructure of Linear Friction Welded WASPALOY

Chamanfar

Jahazi

Gholipour

et al. 2010

Metall Mater Trans A

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The mechanical properties and microstructural evolution of WASPALOY joined by linear friction welding (LFW) were investigated in this study. In-situ temperature measurements using thermocouple probes indicated exposure of the weld area to a temperature of at least 1400 K (1126°C). Based on electron backscatter diffraction (EBSD) mapping of the weldments, up to 50 pct reduction in c grain size occurred within 0.9 mm of the weld interface as a result of dynamic recrystallization (DRX). Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) studies revealed that progressive dissolution of c¢ precipitates took place from the base metal to the weld interface, where almost no c¢ precipitates were observed. Within 3.3 mm of the weld interface, the c¢ dissolution significantly influenced the hardness profile measured across the extended thermomechanically affected zones (TMAZs). Investigation of strain distributions during tensile testing using the optical Aramis system revealed weak bonding at the edge of the weld due to oxidation. To extrude out oxide layers into the flash, increasing the axial shortening to higher than 1.2 mm is recommended.

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Section: A Macroscopic Examinationmentioning

confidence: 99%

Mechanical Property and Microstructure of Linear Friction Welded WASPALOY

Chamanfar

Jahazi

Gholipour

et al. 2010

Metall Mater Trans A

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“…In order to set up the numerical simulation and in particular to verify the choice made about the m coefficient trend, the axial shortening obtained by numerical simulation was compared to in [6] regarding an experiment same material and process conditions results were satisfactory as shown in the next Figure 5. simulation experiment imposed oscillation of the upper specimen was a sinusoidal function characterized by a and a maximum amplitude of 4mm.…”

Section: The Obtained Resultsmentioning

confidence: 99%

Numerical modelling of the linear friction welding process

et al. 2010

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Linear friction welding (LFW) is a solid-state joining process applied to non-axisymmetric components. LFW involves joining of materials through the relative reciprocating motion of two components under an axial force. In such process the heat source is given by the frictional forces work decaying into heat determining a local softening of the material and proper bonding conditions due to both the temperature increase and the local pressure of the two edges to be welded. In the present work the authors present a numerical model of the linear friction welding process of AISI 1045 parts. The numerical model allowed to highlight the process mechanics and the physical conditions which must be reached in order to obtain a correct and effective bonding between the specimens. In this way, the distribution and the history evolution of the most relevant field variables, namely temperature, strain, strain rate and pressure reached at the interface between the two specimens, were investigated.

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“…Такое строение шва и око-лошовной зоны является типичным для ЛСТ и наблю-далось ранее на образцах из углеродистой стали 45 [1], коррозионностойкой стали 08Х18Н10Т [2], титанового сплава Ti-6Al-4V [3], а также разнородных материалов, таких как титановые сплавы ВТ6 и ВТ8М-1 [4].…”

Section: результаты и их обсуждениеunclassified

“…Линейная сварка трением (ЛСТ) является перспективной технологией с точки зрения ее применения в авиадвигателестроении для получения блисков. В этой связи в последние годы наблюдается повышение интереса к процессу ЛСТ жаропрочных титановых сплавов и ста-лей [1][2][3][4]. Наибольший прогресс достигнут при внедрении технологии ЛСТ применительно к титановым сплавам.…”

Section: Introductionunclassified

Structure and properties of welded joint of a D16T alloy obtained by linear friction welding

Kiseleva¹,

Astanin²,

Gareeva³

et al. 2014

LoM

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ФГБОУ ВПО Уфимский государственный авиационный технический университет, ул. К. Маркса 12, 450000, Уфа Исследованы микроструктура и механические свойства твердофазного соединения, полученного линейной сваркой трением (ЛСТ) образцов сплава Д16Т системы Al-Cu-Mg. Обнаружено, что сварной шов, полученный в результате ЛСТ двух образцов прямоугольной формы, не содержит макроскопических дефектов и обладает высокой прочно-стью. Установлено, что в зоне сварного шва в ходе пластической деформации и деформационного разогрева, харак-терных для ЛСТ, происходит существенное преобразование микроструктуры. Microstructure and mechanical properties in the welded zone formed by linear friction welding (LFW) in Al-Cu-Mg alloy D16T have been investigated. It has been revealed that the weld formed by LFW of two samples of rectangular shape does not possess any macroscopic defects and has high strength. It has been also revealed that the substantial transformation of the microstructure occurs in the weld zone during plastic deformation and deformation heating being сharacteristic for LFW.Keywords: aluminum alloy, linear friction welding, microstructure, mechanical properties. ВведениеНа сегодняшний день существует несколько технологи-ческих процессов, позволяющих получать соединения металлов без плавления зоны стыка. В их число входят различные виды сварки трением: ротационная, орбиталь-ная и линейная. Линейная сварка трением (ЛСТ) является перспективной технологией с точки зрения ее применения в авиадвигателестроении для получения блисков. В этой связи в последние годы наблюдается повышение интереса к процессу ЛСТ жаропрочных титановых сплавов и ста- Материал и методики экспериментаВ качестве материала исследования использовали алю-миниевый сплав Д16Т. Исходный полуфабрикат пред-

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Effect of friction time on flash shape and axial shortening of linear friction welded 45 steel

Cited by 87 publications

References 6 publications

Mechanical Property and Microstructure of Linear Friction Welded WASPALOY

Mechanical Property and Microstructure of Linear Friction Welded WASPALOY

Numerical modelling of the linear friction welding process

Structure and properties of welded joint of a D16T alloy obtained by linear friction welding

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