Enhancing microstructure and mechanical performance of 6061-T4 aluminum alloy through robotic ultrasonic multi-needle peening
Source abstract
Abstract
Improving aluminum alloy’s microstructure and mechanical performance necessitates a refined surface treatment process. Hence, this study examines the mechanical characteristics of a 6061-T4 aluminum alloy used in an electric vehicle battery enclosure, treated with robotic ultrasonic needle peening (UNP) featuring multiple needles. Results indicate that robotic UNP with multiple needles induces substantial work-hardening layers of 375 μm and 750 μm at vibration amplitudes of 21 μm and 35 μm, respectively, enhancing surface microhardness by 33.6 % and 54.3 % at corresponding amplitudes. Furthermore, the yield strength values of the treated samples are 166 ± 2.7 MPa and 176 ± 1.5 MPa at vibration amplitudes of 21 μm and 35 μm, respectively, representing improvements of 9.93 % and 16.56 % compared to the untreated sample (151 ± 3.4 MPa). These findings provide crucial insights into aluminum alloy mechanical behavior and advance automated peening across industries.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Surface Treatment and Residual Stress · Additive Manufacturing Materials and Processes · Erosion and Abrasive Machining
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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