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Strengthening aluminum alloy welds via ultrasound without reduction in the average grain size

delete2026-07-30
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PRE
AI
R
Ruihan Zhao
H
Hongtao Zhang *
J
Junlin Pan
R
Rongmao Du
DOI：10.1016/j.matchar.2026.116738delete
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Abstract

Abstract

En 中文
• A novel ultrasonic ‑strengthening strategy is achieved without grain refinement. • Ultrasonic-assisted welding yields ∼50% UTS enhancement (∼131% base metal UTS) without obvious grain refinement. • Under ultrasound, nanoscale Si forms before TPRE mechanism initiates. • Ultrasonic effects deform solidifying crystals and elevate dislocation density within weld zone.
Keywords:
Aluminum alloys
Ultrasonic-assisted solidification
Nanoscale precipitates
Rapid cooling solidification
Welding

Journal

Materials Characterization cover
Materials Characterization
IF:
5.5
Papers:
1.1W
Citations:
3.4W

Organization

H
Harbin Institute of Technology
Scholars:
1.1W
Papers: 3.8K
Citations: 8.5W
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