Effect of Rotation Rate on Microstructure and Mechanical Properties of Friction Stir Spot Welded DP780 Steel

Xie, Guobo; Cui, Hongbo; Luo, Zongan; Wei, Yu; Ma, Jun; Wang, G.D.

doi:10.1016/j.jmst.2015.10.009

Cited by 44 publications

(16 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…When the rotational speed of the welding tool reaches a steady state, it begins to plunge, and the plunge speed v p was 5 mm/min (in Figure 1a). The shoulder plunge depth d s was 0.3 mm after the tool shoulder reached the surface of the workpiece (in Figure 1b) [33,34]. Then, the welding tool was moved forward at a speed v f of 3 mm/min, and the tool pin moved upward at a speed v u of 5 mm/min (in Figure 1c).…”

Section: Introductionmentioning

confidence: 99%

Interface Behavior and Impact Properties of Dissimilar Al/Steel Keyhole-Free FSSW Joints

Zhang

Zhao³

et al. 2019

Metals

View full text Add to dashboard Cite

This work systematically investigates the interface behavior and impact properties of the keyhole-free friction stir spot welding (FSSW) of a dissimilar metal AA6082-T4 Al alloy and DP600 galvanized steel. The keyhole is eliminated by pin retraction technology. The welding process is in accordance with the welding temperature curve and the maximum temperature of the periphery of the shoulder, measured at about 500 °C. The transition layers were formed at the interface, in which the Al, Fe, and Zn elements form an inhomogeneous diffusion. A cloud cluster-like mechanical mixing of the Al and steel components is formed in the stirring zone. The impact toughness of the specimen with a welding parameter of 1000 rpm is the best. To a certain extent, the factors affecting the impact energy are not the maximum impact load but the maximum impact deformation. The maximum impact deformation directly reflects the post-crack propagation energy, which significantly affects its impact toughness. In addition, the impact fracture showed a mixed ductile and brittle fracture mode with a brittle–ductile transition zone. Most of the impact energy was absorbed by the ductile fracture.

show abstract

Section: Introductionmentioning

confidence: 99%

Interface Behavior and Impact Properties of Dissimilar Al/Steel Keyhole-Free FSSW Joints

Zhang

Zhao³

et al. 2019

Metals

View full text Add to dashboard Cite

show abstract

“…Similarly, Bozzi et al mentioned that failure mode did not change by the variation of tool rotation speed, pin plunge depth, and shoulder penetration depth in similar joining of AA5182‐O. Conversely, the influence of tool rotation speed on changing the failure mode was reported by Xie et al and Zhang et al in similar joining of DP780 steel and AA5052, respectively.…”

Section: Resultsmentioning

confidence: 87%

“…Similarly, Bozzi et al 14 mentioned that failure mode did not change by the variation of tool rotation speed, pin plunge depth, and shoulder penetration depth in similar joining of AA5182-O. Conversely, the influence of tool rotation speed on changing the failure mode was reported by Xie et al 27 30 reported that the plunge rate of the rotating tool affected failure mode in AA6063-T6 joints. Conversely, Chen et al 31 did not observe any change in failure mode by the variation of tool plunge rate and dwell time in dissimilar FSSW of AA6061/TRIP780 steel.…”

Section: Failure Mechanisms During Tensile-shear Testmentioning

confidence: 88%

Failure mechanisms of friction stir spot welds of AA6061‐T6/DP590 steel during tensile‐shear testing

Niroumand-Jadidi

Kashani-Bozorg

2019

Fatigue Fract Eng Mat Struct

View full text Add to dashboard Cite

The tensile‐shear test was conducted for the evaluation of shear load and failure mechanisms of dissimilar friction stir spot weldments of AA6061‐T6/DP590 dual‐phase steel sheets. The joints were fabricated using a penetrated pin into the steel sheet (lower member). Such design resulted in the formation of a hook at the joint interface and an intermetallic compound layer (IMC) between the upper part of the hook and Al‐side. A maximum tensile‐shear load of ~2950 N was measured for the joint fabricated using a heat input of ~10 kJ; a lower strength was noted by varying the heat input. Partial plug was the failure mechanism in all joints. However, three different types of crack propagation paths were found depending on the heat input: along the interface between 6061 Al and IMC layer, thru 6061 Al near the joint interface, or within the IMC layer using relatively low, moderate, and high heat inputs.

show abstract

“…Advanced high strength steels (AHSS) can find a wide range of applications in the automotive industry for reducing energy consumption and carbon emissions [1]. AHSS steels have a wide variety of steel types.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Mechanical Properties of Butt Joints of DP800 Thin Zinc-Coated Steel Plates, CMT-Brazed Using Different Current Intensities

et al. 2017

View full text Add to dashboard Cite

In this study, DP800 (dual phase) steel plates, having 1 mm thickness were joined by copper-based (CuAl8) wire using CMT-brazing (cold metal transfer) technique. Specimens were prepared in joining forms in butt joint configuration. CMT-brazing operations were done under nine different CMT-brazing current intensities of 40, 45, 50, 55, 60, 65, 70, 75 and 80 A. CuAl8 wire, composed largely of copper, was used as the filler metal. Having accomplished the CMT-brazing operations, the tensile properties of joints, and micro-and macro-structures of joints were investigated in order to test the joinability of DP800 steel by CMT-brazing technique.

show abstract

Effect of Rotation Rate on Microstructure and Mechanical Properties of Friction Stir Spot Welded DP780 Steel

Cited by 44 publications

References 23 publications

Interface Behavior and Impact Properties of Dissimilar Al/Steel Keyhole-Free FSSW Joints

Interface Behavior and Impact Properties of Dissimilar Al/Steel Keyhole-Free FSSW Joints

Failure mechanisms of friction stir spot welds of AA6061‐T6/DP590 steel during tensile‐shear testing

Investigation of Mechanical Properties of Butt Joints of DP800 Thin Zinc-Coated Steel Plates, CMT-Brazed Using Different Current Intensities

Contact Info

Product

Resources

About