Bending, Nanoindentation and Plasticity Noise in FCC single and poly\n crystals

2017/06/27 by Ryder Bolin, Bolin, Ryder, Hakan Yavaş +7
Engineering · Physics and Astronomy · #Disordered Systems and Neural Networks (cond-mat.dis-nn) #FOS: Physical sciences #Force Microscopy Techniques and Applications #Integrated Circuits and Semiconductor Failure Analysis #Materials Science (cond-mat.mtrl-sci) #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Metal and Thin Film Mechanics

paper · pdf · doi:10.48550/arxiv.1706.08910

openalex publication_date 2017/06/27 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We present a high-throughput nanoindentation study of in-situ bending effects\non incipient plastic deformation behavior of polycrystalline and\nsingle-crystalline pure aluminum and pure copper at ultra-nano depths (<200nm).\nWe find that hardness displays a statistically inverse dependence on in-plane\nstress for indentation depths smaller than 10nm, and the dependence disappears\nfor larger indentation depths. In addition, plastic noise in the\nnanoindentation force and displacement displays statistically robust noise\nfeatures, independently of applied stresses. Our experimental results suggest\nthe existence of a regime in FCC crystals where ultra-nano hardness is\nsensitive to residual applied stresses, but plasticity pop-in noise is\ninsensitive to it.\n

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