Stationary Shoulder Friction Stir Assisted Scribe Technique for Dissimilar Joining

Das, Hrishikesh; Upadhyay, Piyush

doi:10.1115/1.4050188

Stationary Shoulder Friction Stir Assisted Scribe Technique for Dissimilar Joining

Journal Article · Wed Sep 01 00:00:00 EDT 2021 · Journal of Manufacturing Science and Engineering

DOI:https://doi.org/10.1115/1.4050188· OSTI ID:1812530

Das, Hrishikesh ^[1]; Upadhyay, Piyush ^[1]

BATTELLE (PACIFIC NW LAB)

We report on implementation of a stationary shoulder in dissimilar joints of Al-steel and Al-carbon fiber reinforced polymer (CFRP) using friction stir assisted scribe technology (FaST ). Viable joint strength similar to that with the conventional FAST process was demonstrated in Al-steel. A significant improvement in as-welded surface roughness for both Al-steel and Al-CFRP cases was achieved by using stationary shoulder. Interrupted lap shear tests performed on Al-steel joints and a corresponding computational model indicate the joint failure typically occurs in Al sheet via a crack tip that originates at the steel hook tip on the loading side. A similar fracture path was observed in an Al-CFRP joint.

Research Organization:: Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: AC05-76RL01830

OSTI ID:: 1812530

Report Number(s):: PNNL-SA-156811

Journal Information:: Journal of Manufacturing Science and Engineering, Journal Name: Journal of Manufacturing Science and Engineering Journal Issue: 9 Vol. 143

Country of Publication:: United States

Language:: English

References (10)

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