Influence of variable processing conditions on the quasi-static and dynamic behaviors of resistance spot welded aluminum 6061-T6 sheets

S. A. Turnage; K. A. Darling; M. Rajagopalan; W. R. Whittington; M. A. Tschopp; Pedro Peralta; Kiran Solanki

doi:10.1016/j.msea.2018.03.120

Influence of variable processing conditions on the quasi-static and dynamic behaviors of resistance spot welded aluminum 6061-T6 sheets

S. A. Turnage, K. A. Darling, M. Rajagopalan, W. R. Whittington, M. A. Tschopp, Pedro Peralta, Kiran Solanki

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

The mechanical properties of the weld regions of a 6061-T6 resistance spot welded lap joint are determined. The change in mechanical properties resulting from RSW are linked to the changes observed in the microstructure. Processing currents and strain rates are varied to probe the effects of processing temperature at strain rates from 10⁻³ to 10³ s⁻¹. Results show that material strength decreases within the heat affected zone (HAZ) and fusion zone due to precipitate dispersion. Further, decreased ductility results at quasi-static strain rates from accelerated crack growth arising near voids formed during weld formation, but the short time scale at higher strain rates limits the ability for crack growth from these voids allowing the material to exhibit higher ductility. Overall, significant changes in the mechanical behavior across the weld resulting from a change in microstructure congruent with precipitate dispersion are apparent for all processing conditions.

Original language	English (US)
Pages (from-to)	509-517
Number of pages	9
Journal	Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
Volume	724
DOIs	https://doi.org/10.1016/j.msea.2018.03.120
State	Published - May 2 2018

Keywords

Aluminum 6061-T6
Mechanical behavior
Resistance spot weld
Shear punch

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/j.msea.2018.03.120

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Turnage, S. A., Darling, K. A., Rajagopalan, M., Whittington, W. R., Tschopp, M. A., Peralta, P., & Solanki, K. (2018). Influence of variable processing conditions on the quasi-static and dynamic behaviors of resistance spot welded aluminum 6061-T6 sheets. Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing, 724, 509-517. https://doi.org/10.1016/j.msea.2018.03.120

Influence of variable processing conditions on the quasi-static and dynamic behaviors of resistance spot welded aluminum 6061-T6 sheets. / Turnage, S. A.; Darling, K. A.; Rajagopalan, M. et al.
In: Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing, Vol. 724, 02.05.2018, p. 509-517.

Research output: Contribution to journal › Article › peer-review

Turnage, SA, Darling, KA, Rajagopalan, M, Whittington, WR, Tschopp, MA, Peralta, P & Solanki, K 2018, 'Influence of variable processing conditions on the quasi-static and dynamic behaviors of resistance spot welded aluminum 6061-T6 sheets', Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing, vol. 724, pp. 509-517. https://doi.org/10.1016/j.msea.2018.03.120

Turnage SA, Darling KA, Rajagopalan M, Whittington WR, Tschopp MA, Peralta P et al. Influence of variable processing conditions on the quasi-static and dynamic behaviors of resistance spot welded aluminum 6061-T6 sheets. Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing. 2018 May 2;724:509-517. doi: 10.1016/j.msea.2018.03.120

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abstract = "The mechanical properties of the weld regions of a 6061-T6 resistance spot welded lap joint are determined. The change in mechanical properties resulting from RSW are linked to the changes observed in the microstructure. Processing currents and strain rates are varied to probe the effects of processing temperature at strain rates from 10−3 to 103 s−1. Results show that material strength decreases within the heat affected zone (HAZ) and fusion zone due to precipitate dispersion. Further, decreased ductility results at quasi-static strain rates from accelerated crack growth arising near voids formed during weld formation, but the short time scale at higher strain rates limits the ability for crack growth from these voids allowing the material to exhibit higher ductility. Overall, significant changes in the mechanical behavior across the weld resulting from a change in microstructure congruent with precipitate dispersion are apparent for all processing conditions.",

keywords = "Aluminum 6061-T6, Mechanical behavior, Resistance spot weld, Shear punch",

author = "Turnage, {S. A.} and Darling, {K. A.} and M. Rajagopalan and Whittington, {W. R.} and Tschopp, {M. A.} and Pedro Peralta and Kiran Solanki",

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AU - Turnage, S. A.

AU - Darling, K. A.

AU - Rajagopalan, M.

AU - Whittington, W. R.

AU - Tschopp, M. A.

AU - Peralta, Pedro

AU - Solanki, Kiran

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N2 - The mechanical properties of the weld regions of a 6061-T6 resistance spot welded lap joint are determined. The change in mechanical properties resulting from RSW are linked to the changes observed in the microstructure. Processing currents and strain rates are varied to probe the effects of processing temperature at strain rates from 10−3 to 103 s−1. Results show that material strength decreases within the heat affected zone (HAZ) and fusion zone due to precipitate dispersion. Further, decreased ductility results at quasi-static strain rates from accelerated crack growth arising near voids formed during weld formation, but the short time scale at higher strain rates limits the ability for crack growth from these voids allowing the material to exhibit higher ductility. Overall, significant changes in the mechanical behavior across the weld resulting from a change in microstructure congruent with precipitate dispersion are apparent for all processing conditions.

AB - The mechanical properties of the weld regions of a 6061-T6 resistance spot welded lap joint are determined. The change in mechanical properties resulting from RSW are linked to the changes observed in the microstructure. Processing currents and strain rates are varied to probe the effects of processing temperature at strain rates from 10−3 to 103 s−1. Results show that material strength decreases within the heat affected zone (HAZ) and fusion zone due to precipitate dispersion. Further, decreased ductility results at quasi-static strain rates from accelerated crack growth arising near voids formed during weld formation, but the short time scale at higher strain rates limits the ability for crack growth from these voids allowing the material to exhibit higher ductility. Overall, significant changes in the mechanical behavior across the weld resulting from a change in microstructure congruent with precipitate dispersion are apparent for all processing conditions.

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Influence of variable processing conditions on the quasi-static and dynamic behaviors of resistance spot welded aluminum 6061-T6 sheets

Abstract

Keywords

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