Atomistic investigation of the influence of hydrogen on dislocation nucleation during nanoindentation in Ni and Pd

W2473448282 · 수집 2026-10-04 18:12:26

T10377 Metal and Thin Film Mechanics

CoT 라벨링

라벨링 전

PDF 파일

저장된 PDF 없음

기본 정보

DOI 제목 발행년도 저널 URL 페이지 열기 PDF URL PDF 열기 발행기관 피인용수 라이선스

추가 정보 초록

The effects of hydrogen charging on the mechanical response of FCC Ni and Pd under nanoindentation are systematically investigated by molecular dynamics simulations. Simulations consider a random H distribution and time scales prevent any diffusion of H during the simulations. Hydrogen charging is then found to reduce the threshold load for dislocation nucleation, i.e., the pop-in load, but only to a limited extent. After pop-in, the indentation response is largely independent of the presence of H. Furthermore, the influence of hydrogen charging on the pop-in load originates only from the hydrogen-induced swelling of the lattice. That is, H does not directly influence dislocation nucleation, either in terms of facilitating initial slip or interacting with the nascent dislocation(s). These findings suggest that rate dependent processes, either associated with fluctuating nucleation or H transport, are necessary to interpret experimental observations of hydrogen-influenced reductions in the pop-in load. (C) 2016 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

본문

PDF 본문 자동 추출 실패: [download] not a PDF (Content-Type: image/jpeg, final URL: https://ars.els-cdn.com/content/image/1-s2.0-S135964541630492X-fx1_lrg.jpg) (2026-10-05 04:43:04)

활용가능성

이력 0건

아직 편집 이력이 없습니다. 저장할 때마다 이전 내용이 여기에 백업됩니다.