Studies on weldability of iron-based powder metal alloys using pulsed gas tungsten arc welding process

Corrêa, Edmilson Otoni; Costa, Sebastião Carlos da; Santos, J.N.

doi:10.1016/j.jmatprotec.2008.09.008

Cited by 23 publications

(19 citation statements)

References 8 publications

(11 reference statements)

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“…The timely replacement of pipes is obviously vital; however, it is also important to consider the economic viability of performing welding repairs as a precautionary measure to arrest the growth of cracks. Overlay welding (also known as weld cladding) is defined as the deposit of a dissimilar weld metal on the surface of a metal part and is the most common approach to repairing welds at nuclear power plants [8][9][10][11]. This method involves the application of a relatively thick (3 mm or more) layer of weld metal to suppress crack expansion.…”

Section: Introductionmentioning

confidence: 99%

Relationships between microstructures and properties of buffer layer with Inconel 52M clad on AISI 316L stainless steel by GTAW processing

Lin

2013

Surface and Coatings Technology

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Section: Introductionmentioning

confidence: 99%

Relationships between microstructures and properties of buffer layer with Inconel 52M clad on AISI 316L stainless steel by GTAW processing

Lin

2013

Surface and Coatings Technology

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“…5, b, c. The above results demonstrate that the distribution and compatibility of the reinforcement element in the different parts of the weld is homogeneous, resulting from the uniform composition in the composite and optimum welding parameters [22,23]. have been observed.…”

Section: Examination Of Microstructurementioning

confidence: 51%

Joinability of Particulate Reinforced Alumix 231 Based Composite Materials Produced by Powder Metallurgy Route

Ateş¹,

Gökmen²,

Çinici³

et al. 2016

Metallofiz. Noveishie Tekhnol.

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In the present study, weldability of Alumix 231 based composite materials reinforced with Al 2 O 3 and B 4 C and produced by powder metallurgy route is investigated. Various amounts of (0, 5, 10, and 15% wt.) Al 2 O 3 and B 4 C powders are added to the pre-alloyed Alumix 231 (Al-2.5% Cu-0.5% Mg-14% Si) powders separately and then mixed in a three-dimensional mixer for 45 min. Powders are compacted and sintered in an argon atmosphere at 640C for 4 h. Produced blocks are welded by the Tungsten Inert Gas (TIG) welding at 25 V, 197 A and 14 l/min shielded gas flow in commercially pure argon atmosphere. Macro-and microexamination together with some mechanical properties of the welded area are studied. The results show that, although high amount of particles resulted in a decrease in the density, these composite materials can still be welded by the TIG welding method successfully.Исследуется свариваемость произведённых методом порошковой метал-лургии композитных материалов на основе Alumix 231, армированных Al 2 O 3 и B 4 C. Различные количества (0, 5, 10 и 15 масс.%) порошков Al 2 O 3 и B 4 C по отдельности добавлялись в предварительно сплавленные порош-ки Alumix 231 (Al-2,5% Cu-0,5% Mg-14% Si), а затем перемешивались в трёхмерном миксере в течение 45 минут. Затем порошки прессовались и спекались в атмосфере аргона при 640C в течение 4 часов. Полученные блоки сваривались вольфрамовой сваркой в атмосфере инертного газа при 25 В, 197 А и потоке инертного газа в 14 л/мин в атмосфере технически чистого аргона. Были проведены макро-и микроисследования некоторых механических свойств сварной зоны. Их результаты показали, что, хотя оказалось большое количество частиц с пониженной плотностью, эти композитные материалы могут быть успешно сварены методом вольфра-мовой сварки в атмосфере инертного газа. 1314 H. ATES, U. GOKMEN, H. CINICI, A. UZUN, H. KARAKOC, and M. TURKER у попередньо стоплені порошки Alumix 231 (Al-2,5% Cu-0,5% Mg-14% Si), а потім перемішувалися в тривимірному міксері впродовж 45 хвилин. Потім порошки пресувалися та спікалися в атмосфері арґону при 640C впродовж 4 годин. Одержані блоки зварювалися вольфрамовим зварен-ням в атмосфері інертного газу при 25 В, 197 А та потоці інертного газу у 14 л/хв. в атмосфері технічно чистого арґону. Було виконано макро-та мікродослідження деяких механічних властивостей зварної зони. Їх ре-зультати показали, що, хоча виявилася велика кількість частинок зі зниженою густиною, ці композитні матеріяли можуть бути успішно зва-рені методою вольфрамового зварювання в атмосфері інертного газу.

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“…For some special applications, it is necessary to join super-Ni/NiCr laminate to one similar or dissimilar material as integrated components [1][2][3]. Therefore, weldability of super-Ni/NiCr laminate must be well established.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and fracture characteristics in vacuum brazed joint of super-Ni/NiCr laminated composite

Wu¹,

Li²,

Wang³

2021

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The objective of this study is to investigate the brazeability of a new laminated composite with Ni-Cr-P filler metal in vacuum. Microstructure, microhardness and shear strength of the brazed joint were investigated by means of scanning electron microscopy, energy-dispersive spectroscopy, microsclerometer and electromechanical universal testing machine. Excellent joint of super-Ni/NiCr laminated composite to Cr18-Ni8 steel was obtained at 1040

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Studies on weldability of iron-based powder metal alloys using pulsed gas tungsten arc welding process

Cited by 23 publications

References 8 publications

Relationships between microstructures and properties of buffer layer with Inconel 52M clad on AISI 316L stainless steel by GTAW processing

Relationships between microstructures and properties of buffer layer with Inconel 52M clad on AISI 316L stainless steel by GTAW processing

Joinability of Particulate Reinforced Alumix 231 Based Composite Materials Produced by Powder Metallurgy Route

Microstructure and fracture characteristics in vacuum brazed joint of super-Ni/NiCr laminated composite

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