Microstructure and Mechanical Properties of Ultrasound-Assisted Soldered Al-50 wt.%Si/Al-27 wt.%Si Joints for Automotive Applications

Xu, Changjun; Lang, Qiang; Wang, Qian; Yun-ru, Chen; Yan, Jiuchun; Chen, Shengyong

doi:10.1007/s11837-019-03337-7

Cited by 9 publications

(6 citation statements)

References 23 publications

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“…These shear strengths are slightly higher than the results reported in Ref. 16, in which Al-27Si/Al-50Si joints were soldered by using a Zn-Al interlayer with ultrasound assistance at 420°C and the highest shear strength of the joints was 70.4 MPa.…”

Section: Effect Of Temperature On Mechanicalcontrasting

confidence: 66%

“…15 However, there are few reports on welding of hypereutectic Al-Si alloys. 16,17 Xu et al 16 adopted ultrasound-assisted brazing to weld hypereutectic Al-Si alloys with different Si contents for automotive applications. Sun et al 17 brazed ultrahighsilicon Al-Si alloys by partial transient liquid-phase bonding for electronic packaging applications.…”

Section: Introductionmentioning

confidence: 99%

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Influence of Bonding Temperature on Interfacial Microstructure and Properties of Hypereutectic Al-Si Joints with Cu Interlayer

Wang

Chen

Sun

et al. 2021

JOM

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Hypereutectic Al-27Si and Al-50Si alloys have been bonded and the influence of the bonding temperature on the microstructure and properties of the joints investigated. The results showed that Al-27Si/Al-50Si joints were bonded metallurgically with wide soldering seams containing a-Al, b-Si, and h-Al 2 Cu eutectic phases. The amount of h-Al 2 Cu eutectic phase gradually decreased and the bonding interface became nonplanar with increasing temperature. Many cracks formed in the Si phases on the Al-50Si side because of the shrinkage mismatch between the Al and Si phases and the different coefficients of thermal expansion of the Al-27Si and Al-50Si alloys. Some Si phases on the Al-27Si side transformed from granular to needle-like shape at higher temperatures. The shear strength of the joints first increased then decreased with increasing temperature, reaching a maximum of 82.3 MPa at 540°C.

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Section: Effect Of Temperature On Mechanicalcontrasting

confidence: 66%

Section: Introductionmentioning

confidence: 99%

Influence of Bonding Temperature on Interfacial Microstructure and Properties of Hypereutectic Al-Si Joints with Cu Interlayer

Wang

Chen

Sun

et al. 2021

JOM

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“…In this situation, using a lower bonding temperature process utilising Zn-based filler metals is of great importance. For example, a Zn-5 wt-%Al interlayer has been applied for the soldering of hypereutectic Al-%Si alloy at 420 o C [15]. In this work, pure [11], which is featured by a eutectic reaction at 382°C and a eutectoid reaction at 275°C.…”

Section: Introductionmentioning

confidence: 99%

“…In this situation, using a lower bonding temperature process utilising Zn-based filler metals is of great importance. For example, a Zn–5 wt-%Al interlayer has been applied for the soldering of hypereutectic Al–%Si alloy at 420 o C [15]. In this work, pure Zn interlayer, as a high-temperature solder, is used to join A359 cast Al to AISI321 austenitic stainless steel for thermal managing systems.…”

Section: Introductionmentioning

confidence: 99%

Microstructural evaluation in dissimilar liquid phase bonding of cast Al–Si alloy and stainless steel using pure zinc filler metal

Mohammadi

Ranjbarnodeh

Soltanalinejad

et al. 2023

Science and Technology of Welding and Joining

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The metallurgical joining between cast A359 aluminium alloy and AISI321 stainless steel using pure Zn as the interlayer was performed slightly above Al-Zn eutectic temperature. The liquid phase was formed by a eutectic reaction between Al and Zn and subsequently isothermally solidified by diffusion of Zn into the A359 base metal (i.e. reactive transient liquid phase bonding). The formation of a Zn-rich diffusion affected zone in A359, incorporation of Si particles into the bond zone, formation of a thin Al-Fe-Si intermetallic at the steel interface, and isothermal solidification of the liquid phase and subsequent Al-Zn eutectoid transformation govern the microstructure of the joint. The resultant bond microstructure does not deleteriously affect the heat sink function of Al base metal.

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“…of automotive, marine, and aircraft industries. [ 1 ] The presence of Si above 7 wt% in Al alloys tends to increase the hardness but with the detrimental enhancement of brittleness. [ 2 ] The machining of ADC12 alloys with ≥10 wt% Si becomes difficult, as the presence of primary and eutectic silicon leads to excessive tool wear.…”

Section: Introductionmentioning

confidence: 99%

Reinforcing the Near Eutectic Aluminum–Silicon Alloy with Graphene: An Approach toward Self‐Lubricating Composite

Singh

Kumar

et al. 2020

Adv Eng Mater

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Mechanical and physical properties of aluminum alloys make them suitable for automotive and other structural applications. The high silicon content in aluminum improves the hardness to a great extent but at the cost of ductility. Herein, the reinforcement of near eutectic Al–Si (ADC12) alloy with the reduced graphene oxide (rGO) is demonstrated. The ADC12 alloy and its composite with rGO are cast using the gravity stir die‐casting process. The structural, mechanical, metallurgical, and tribological characteristics are conducted to understand the role of rGO as a reinforcement phase. The 0.7 wt% rGO as a reinforcement phase to ADC12 alloy reduces the friction and wear volume by 50% and ≈90%, respectively, whereas it improves the hardness by 27%. The high‐resolution transmission electron microscopy (TEM) image reveals the wrapping of microstructural silicon by rGO, which inhibits the growth of primary silicon and improves the interfacial strengthening. The high mechanical strength and low shearing properties of rGO, uniform dispersion in the ADC12 alloy, and restrained growth of primary silicon make the ADC12 alloy‐based composites potential materials for structural and low‐frictional building blocks in a diversified range of applications.

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Microstructure and Mechanical Properties of Ultrasound-Assisted Soldered Al-50 wt.%Si/Al-27 wt.%Si Joints for Automotive Applications

Cited by 9 publications

References 23 publications

Influence of Bonding Temperature on Interfacial Microstructure and Properties of Hypereutectic Al-Si Joints with Cu Interlayer

Influence of Bonding Temperature on Interfacial Microstructure and Properties of Hypereutectic Al-Si Joints with Cu Interlayer

Microstructural evaluation in dissimilar liquid phase bonding of cast Al–Si alloy and stainless steel using pure zinc filler metal

Reinforcing the Near Eutectic Aluminum–Silicon Alloy with Graphene: An Approach toward Self‐Lubricating Composite

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