Spot impact welding of an age-hardening aluminum alloy: Process, structure and properties

Kapil, Angshuman; Lee, Taeseon; Vivek, Anupam; Cooper, R.; Hetrick, Elizabeth; Daehn, Glenn S.

doi:10.1016/j.jmapro.2018.11.006

Cited by 15 publications

(8 citation statements)

References 29 publications

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“…The impact of the backing material had a substantial influence over both the interf cial wave dynamics and the structural integrity of the joint, as illustrated before [16,28 The shock impedance of a material has a great influence on impact welding, and it is d The impact of the backing material had a substantial influence over both the inte cial wave dynamics and the structural integrity of the joint, as illustrated before [16, The shock impedance of a material has a great influence on impact welding, and it is…”

Section: The Effect Of Backing Materials (Steel Versus Acrylic Backing)mentioning

confidence: 70%

“…It is also critical when welding dissimilar materials, as this could lead to undesired phase particles forming, and thereby threatening, the bond's integrity. Kapil et al demonstrated the influence of employing polyvinyl chloride (PVC) plastic as a backing material behind the target on the weld interface [16]. The authors clarified how the utilization of PVC affected both the strength and the failure of the joints due to the crack propagation.…”

Section: Introductionmentioning

confidence: 99%

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The Effects of Target Thicknesses and Backing Materials on a Ti-Cu Collision Weld Interface Using Laser Impact Welding

Abdelmaola,

Thurston,

Panton

et al. 2024

Metals

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This study demonstrates that the thickness of the target and its backing condition have a powerful effect on the development of a wave structure in impact welds. Conventional theories and experiments related to impact welds show that the impact angle and speed of the flyer have a controlling influence on the development of wave structure and jetting. These results imply that control of reflected stress waves can be effectively used to optimize welding conditions and expand the range of acceptable collision angle and speed for good welding. Impact welding and laser impact welding are a class of processes that can create solid-state welds, permitting the formation of strong and tough welds without the creation of significant heat affected zones, and can avoid the gross formation of intermetallic in dissimilar metal pairs. This study examined small-scale impact using a consistent launch condition for a 127 µm commercially pure titanium flyer impacted against commercially pure copper target with thicknesses between 127 µm and 1000 µm. Steel and acrylic backing layers were placed behind the target to change wave reflection characteristics. The launch conditions produced normal collision at about 900 m/s at the weld center, with decreasing impact speed and increasing angle moving toward the outer perimeter. The target thickness had a large effect on wave morphology, with the wave amplitude increasing with target thickness in both cases, peaking when target thickness is about twice flyer thickness, and then falling. The acrylic backing showed a consistently smaller unwelded central zone, indicating that impact welding is possible at a smaller angle in that case. Strength was measured in destructive tensile testing. Failure was controlled by the breakdown of the weaker of the two base metals over all thicknesses and backings. This demonstrates that laser impact welding is a robust method for joining dissimilar metals over a range of thicknesses.

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Section: The Effect Of Backing Materials (Steel Versus Acrylic Backing)mentioning

confidence: 70%

Section: Introductionmentioning

confidence: 99%

The Effects of Target Thicknesses and Backing Materials on a Ti-Cu Collision Weld Interface Using Laser Impact Welding

Abdelmaola,

Thurston,

Panton

et al. 2024

Metals

Self Cite

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“…The conducted review of scientific papers on the research topic showed significant interest from outside groups on this topic [16]. Also, the obtained data can be used to determine the safe operating modes of this type of devices [17], to develop recommendations on the method of thermal inspection of joints obtained by spot welding. Significant defor-mations lead to a thinning of the thickness and, as a consequence, a sharp decrease in the mechanical properties of the joint [18].…”

Section: Resultsmentioning

confidence: 99%

Calculation of the Energy of Capacitors for a Spot Welding Apparatus by a Numerical Method

Varlamov

Fironov

Kanareykin

et al. 2020

Proceedings of the 30th International Conference on Computer Graphics and Machine Vision (GraphiCon 2020). Part 2

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This article provides information on the development of an adjustable spot welder implemented on the basis of the capacitor principle without a transformer. Also the scientific work considers the calculation of the energy of the capacitors for a spot welding apparatus using modern methods of numerical simulation and programming. The method of calculation is given, as well as a mathematical solution tool. The calculation results are compared with the experiment. Based on the data obtained, according to the results of calculations, work was carried out on a prototype, the result of which was an adjustable spot welder. It allows you to accurately and quickly weld nickel plates to lithium cells, creating full-fledged batteries from them, which are widely used in modern technology, including promising vehicles. The presence of sensors and a screen allows the operator to control the charging process and the direct operation of the unit, which simplifies the use of the device.

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“…Age-hardening, a heat treatment process, enhances an alloy’s strength by exploiting precipitation or dissolution behavior within an oversaturated solid solution obtained after solution treatment [ 15 , 16 ]. Artificial age-hardening techniques substantially enhance the strength of aluminum alloys after the solution treatment, with the T6 aging process manifesting the maximum mechanical strength of the alloy [ 17 , 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Artificial Aging Treatment on the Mechanical Properties and Regulation of Precipitated Phase Particles of High-Pressure Die-Cast Thin-Wall AlSi10MnMg Longitudinal Carrier

Wang

Yang³

et al. 2023

Materials

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This study investigates the artificial aging treatment process for AlSi10MnMg longitudinal carriers with optimal strength and ductility. Experimental results illustrate that the peak strength is observed under single-stage aging at 180 °C × 3 h, with a tensile strength of 332.5 MPa, Brinell hardness of 133.0 HB, and elongation of 5.56%. As aging time increases, tensile strength and hardness initially increase and then decrease, while elongation displays an inverse pattern. The amount of secondary phase particles at grain boundaries increases with aging temperature and holding time, but stabilizes as aging progresses; the secondary phase particles begin to grow, eventually weakening the alloy’s strengthening effect. The fracture surface exhibits mixed fracture characteristics, including ductile dimples and brittle cleavage steps. Range analysis indicates that the influence of distinct parameters on mechanical properties post-double-stage aging is as follows: first-stage aging time, first-stage aging temperature, followed again by second-stage aging time, and second-stage aging temperature. For peak strength, the optimal double-stage aging process includes a first-stage aging temperature of 100 °C × 3 h and a second-stage aging temperature of 180 °C × 3 h.

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Spot impact welding of an age-hardening aluminum alloy: Process, structure and properties

Cited by 15 publications

References 29 publications

The Effects of Target Thicknesses and Backing Materials on a Ti-Cu Collision Weld Interface Using Laser Impact Welding

The Effects of Target Thicknesses and Backing Materials on a Ti-Cu Collision Weld Interface Using Laser Impact Welding

Calculation of the Energy of Capacitors for a Spot Welding Apparatus by a Numerical Method

Effect of Artificial Aging Treatment on the Mechanical Properties and Regulation of Precipitated Phase Particles of High-Pressure Die-Cast Thin-Wall AlSi10MnMg Longitudinal Carrier

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