Influence of Rubbing Profile on Friction Welding of Pre-Strained Aluminum to Copper
16 Dec 2009-pp 510-514
TL;DR: Friction welding was carried out with pre-determined process parameters and the effect of initial geometry on friction welding is illustrated and the quality of welds was assessed.
Abstract: The joining of copper to aluminum is inevitable for certain application in the electrical industry due to good conductivity and response offered by copper, aluminum for weight reduction. Whilst in the majority of cases, aluminum and copper can be joined by adhesive bonding, mechanical fastening, fusion welding and solid-phase welding techniques. Friction welding is well known for its ability to weld aluminum to many metals and consequently is being considered seriously. The present study describes about producing a sound joint between two dissimilar metals of pre-strained aluminum to commercially pure copper. Commercial pure aluminum is strained to reduce the disparity in strength level and the effect of pre-strain on friction welding is envisaged. The stronger metal (copper) in this combination is further weakened by intentionally removing some of the material so that a sound joint is obtained. Friction welding was carried out with pre-determined process parameters and the effect of initial geometry on friction welding is illustrated. Post weld characterization such as mechanical and microstructural studies of these welds was carried out to assess the quality of welds.
Citations
More filters
03 Aug 2018
15 citations
Dissertation•
01 Sep 2015
6 citations
Cites background from "Influence of Rubbing Profile on Fri..."
...Types of welding which may be appropriate include laser welding [55], ultrasonic welding [56] and friction welding [57]....
[...]
01 Nov 2017
TL;DR: In this article, a plug-in connector between the ISCAD drive system and the power electronic was examined with varied surface treatment to identify any trends on lifetime estimation, whereby the Arrhenius model is applied.
Abstract: For the new ISCAD Drive System investigations are made on a plug-in connector between the machine, where the bars are made from aluminum and the power electronic, which is mainly made from copper. Based on driving cycles and previous measurements the power dissipation and temperatures are calculated analytically. Three different plug-in connectors are examined with varied surface treatment to identify any trends on lifetime estimation, whereby the Arrhenius model is applied. Obviously the results show a higher ohmic resistance of the joint and an insufficient lifetime of the untreated connector due to the oxidation process of aluminum in air.
3 citations
References
More filters
TL;DR: In this paper, the mechanical and metallurgical properties of friction-welded steel-aluminum and aluminium-copper bars are investigated using electron and optical microscopy.
134 citations
"Influence of Rubbing Profile on Fri..." refers background in this paper
...The same phenomenon has been reported during friction welding of dissimilar wrought welds namely sintered powder metallurgical steel and wrought copper [4], aluminum to copper [5], and materials with wide differences in strength....
[...]
25 Apr 2007-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
TL;DR: In this article, the authors investigated the friction welding characteristics of sintered P/M steel preforms with wrought copper dissimilar parts and inferred that the preforms of lower densities with lower process parameters yields quality weldments, established through postweld tests.
Abstract: The present investigation attempts to understand the friction welding characteristics of sintered P/M steel preforms–wrought copper dissimilar parts. In order to achieve sound weld between these two materials the process parameters were optimized and inferred that the preforms of lower densities with lower process parameters yields quality weldments, established through post-weld tests. This study also envisages the influence of process parameters which include resident preform densities, friction pressure, upset pressure, and burn-off length on microstructure and mechanical properties of the welds. This work consolidates information on the aspects of joining P/M component with wrought materials for practical execution.
57 citations
"Influence of Rubbing Profile on Fri..." refers background in this paper
...The same phenomenon has been reported during friction welding of dissimilar wrought welds namely sintered powder metallurgical steel and wrought copper [4], aluminum to copper [5], and materials with wide differences in strength....
[...]
TL;DR: In this article, Friction welding of dissimilar metals is discussed and the authors propose a method to solve the problem of non-convexity welding in dissimilar metal materials.
Abstract: (2003). Friction welding of dissimilar metals. Welding International: Vol. 17, No. 4, pp. 271-275.
52 citations
"Influence of Rubbing Profile on Fri..." refers background in this paper
...In application where friction welding has replaced other joining processes, the production rate having been increased substantially [1]....
[...]
TL;DR: In this paper, continuous drive friction welding studies on sintered powder metallurgical (P/M) steel preforms and wrought mild steel combination are reported, and sound welds were obtained with all welding parameter combinations studied.
Abstract: Continuous drive friction welding studies on sintered powder metallurgical (P/M) steel preforms–wrought mild steel combination are reported in the present study. The work is a preliminary study to optimise the friction welding parameters and data generated by the present work is expected to contribute to friction welding of dissimilar and similar sintered P/M preforms to wrought metals or sintered P/M preforms – a planned future research work. Sound welds were obtained with all welding parameter combinations studied. The mechanical properties of welds were comparable to those of sintered P/M steel. Sintered P/M preforms deformed to a greater extent than wrought mild steel due to their low flow stress and thermal conductivity. The sintered density and other properties of the P/M preforms were found to dictate the deformation at the interface and consequently the weld strength. The results indicate that the current approach can be extended to other combinations of sintered P/M preforms.
5 citations
"Influence of Rubbing Profile on Fri..." refers background in this paper
...Recent work had revealed an interesting observation that, the differential strength of the two dissimilar metals during friction welding resulted in causing more plastic deformation at the expense of poor weld joint [3]....
[...]