Effect of Various Factors on the Brazed Joint Properties in Al Brazing Technology

Sharma, Ashutosh; Lee, Seung Hyun; Ban, Hyung Oh; Shin, Young Sik; Jung, Jae Pil

doi:10.5781/jwj.2016.34.2.30

Cited by 15 publications

(9 citation statements)

References 31 publications

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“…Dark layer from stainless steel side and light color layer from aluminum side can be noticed. Every layer contains number of phases depending on diffusion of elements between base metals and filler alloy [8] .…”

Section: Brazing Joint Microstructurementioning

confidence: 99%

Furnace Brazing of AA5086 Aluminum Alloy with AISI 316L Stainless Steel by ER4047 and ER4043 Fillers

Abood¹,

Mohammed²

2018

مجلة جامعة الملك عبدالعزيز-العلوم الهندسية

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In this investigation AA5086-H116 aluminum alloys were furnace brazed with AISI316 stainless steel. Brazing process was done with high purity nitrogen gas atmosphere. ER4047 and ER4043 fillers were used with fillers thickness 80µm approximately. Five holding times were employed (5, 10, 15, 20 and 25). The microstructures examination showed two bounding layers. First layer from stainless steel side with Fe-rich phases and second layer from aluminum side with Al-rich phase. Joint strength was mainly depended on thickness of these two layers. EDS results demonstrated high diffusion between fillers and two metals to form different intermetallic compounds and there is a clearly relationship between holding time and filler elements diffusion. XRD indicated existing of Mg 2 Si and Al-Fe-Si phases at joining line and diffusion zone, which gives high strength. When holding time raised more than 20 minutes brittle phases (Fe 3 Al, FeAl and FeAl 3) would form or growth speedily in joining line and diffusion zone. High hardness and brittle nature of these intermetallic phases will decrease mechanical properties of braziments. Shear results recorded 18MPa for the AA5086-H116 joining with ER4047 for 20 minutes and 16Mpa when joining with ER4043 for 20 minutes also.

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Section: Brazing Joint Microstructurementioning

confidence: 99%

Furnace Brazing of AA5086 Aluminum Alloy with AISI 316L Stainless Steel by ER4047 and ER4043 Fillers

Abood¹,

Mohammed²

2018

مجلة جامعة الملك عبدالعزيز-العلوم الهندسية

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“…The active brazing was conducted at a 750 °C for 30 min in a vacuum furnace. The average compressive strengths of five samples were 1477 MPa, which means a favorable joint strength [7]. Additionally, the authors reported a maximum shear strength of 15 MPa for Cu/Al 2 O 3 joint when brazed with AgCuTiSn filler metal [8].…”

Section: Introductionmentioning

confidence: 88%

Recent Advances in Active Metal Brazing of Ceramics and Process

et al. 2019

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Ceramic to metal joining has its potential applications in microelectronics packaging, metal-ceramic seals, vacuum tubes, sapphire metal windows, etc. But there are many limitations in joining this duo of materials that range from their structures, nature of bonding, physical properties to a complex phenomenon like wetting, spreading and adhesion. The current review discusses these critical issues from the aspects of thermodynamics, the role, and type of active elements, Ag-Cu-Ti brazing filler system and the reliability factors like residual stress, coefficient of thermal expansion, material reliability, pores and unbonded regions on the surface which affect the mechanical reliability of the joint.

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“…To further improve the properties of Al-alloys, wide investigations have been performed by the addition of alloying elements, impurity addition, and by using modifiers etc. [25][26][27] . The additional alloying elements may cause the development of IMCs, hence these IMCs are the key elements in accessing the microstructure and mechanical properties of Al-alloys.…”

Section: Low-temperature Al-based Brazing Fillersmentioning

confidence: 99%

A Review of the Brazeability of Low-Temperature and Nano-Reinforced Al-Based Brazing Filler Metals

et al. 2022

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Aluminum and its alloys are some of the most widely used materials for the brazing of parts in aerospace and automotive industries due to their excellent physical characteristics, e.g., good ductility, high strength-to-weight ratio, light weight, good corrosion and oxidation resistance, satisfactory malleability and formability, and excellent thermal and electrical conductivity. Especially during casting operations, high strength and machinability of Al-based alloys are of utmost concern. The quality and strength of casting products are affected by porosity generated due to the dissolution of gases and the effects of modifiers. Thus, unstable properties of Al alloys arising due to such influences should to be controlled by reinforcing suitable elements. Compared to other materials, brazing on Al requires higher control precision as the difference between the melting points of the base metal and the filler remain low even after the addition of melting point suppressants, such as Si. This necessitates the development of novel low-temperature Al-based filler metals. Moreover, the mechanical properties of Al-based alloys can be enhanced by introducing nanoparticles within them to reduce the thickness of Si-needles and IMCs (intermetallic compound) within the Al matrix, thereby refining the nanostructure.

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Effect of Various Factors on the Brazed Joint Properties in Al Brazing Technology

Cited by 15 publications

References 31 publications

Furnace Brazing of AA5086 Aluminum Alloy with AISI 316L Stainless Steel by ER4047 and ER4043 Fillers

Furnace Brazing of AA5086 Aluminum Alloy with AISI 316L Stainless Steel by ER4047 and ER4043 Fillers

Recent Advances in Active Metal Brazing of Ceramics and Process

A Review of the Brazeability of Low-Temperature and Nano-Reinforced Al-Based Brazing Filler Metals

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