Enhanced toughness and tear resistance of thin-walled High-Pressure Die-Cast aluminum alloys through Friction stir processing

Samanta, Avik; Lall, Amrita; Das, Hrishikesh; Seffens, Robert J.; Grant, Glenn J.; Jana, Saumyadeep

doi:10.1016/j.matlet.2023.135752

Title: Enhanced toughness and tear resistance of thin-walled High-Pressure Die-Cast aluminum alloys through Friction stir processing

Journal Article · 12 December 2023 · Materials Letters

DOI: https://doi.org/10.1016/j.matlet.2023.135752 · OSTI ID:2337587

^[1]; Lall, Amrita ^[1]; Das, Hrishikesh ^[1];

^[1]; Grant, Glenn J. ^[1]; Jana, Saumyadeep ^[1]

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

In this study, we investigate the toughness and resistance to tear of thin-wall high-pressure die-cast (HPDC) aluminum alloys in two different orientations following the implementation of friction stir processing (FSP). The FSP technique was applied to two different HPDC Al-Si alloys: the recyclable-grade, high iron, A380 alloy and the premium-quality, low iron, Aural-5 alloy. Our findings reveal significant tear resistance and strength enhancements for both alloys after FSP modification. Specifically, FSPed A380 alloy requires 126% higher energy to tear, and it has 49% higher tear strength than the HPDC counterpart. Similarly, the tear energy and tear strength of the Aural-5 alloy witness enhancements of 69% and 21%, respectively. In conclusion, these results highlight the potential of FSP as a viable method for augmenting the mechanical properties of HPDC aluminum alloys, thereby opening up new avenues for their utilization in diverse engineering applications for crack obstruction.

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

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Office of Sustainable Transportation. Vehicle Technologies Office (VTO)

Grant/Contract Number:: AC05-76RL01830

OSTI ID:: 2337587

Alternate ID(s):: OSTI ID: 2246672

Report Number(s):: PNNL-SA--191954

Journal Information:: Materials Letters, Journal Name: Materials Letters Vol. 357; ISSN 0167-577X

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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36 MATERIALS SCIENCE
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