Development of Fatigue Testing System for in-situ Observation of Stainless Steel 316 by HS-AFM & SEM

Amir Farokh Payam, Oliver Payton, Loren Picco, Stacy Moore, Tomas Martin, A.D. Warren, Mahmoud Mostafavi, David Knowles

Research output: Contribution to journalArticle

Abstract

A miniature three-point bend fatigue stage for in-situ observation of fatigue microcrack initiation and growth behaviour by scanning electron microscopy (SEM) and contact mode high-speed atomic force microscopy (HS-AFM) has been developed. Details of this stage are provided along with finite element simulations of the stress profiles of said stage and specimen on loading. The proposed stage facilitates study of the micro mechanisms of fatigue damage evolution when used during SEM and HS-AFM scanning of the sample surface. High amplitude low cycle fatigue tests have been carried out on annealed AISI Type 316 stainless steel to demonstrate the applicability of the system. Characteristic features of surface topography and evolution of slip bands observed have been documented. Images obtained by SEM and HS-AFM are presented for comparison. Finally, to demonstrate the capability of the new facility combined with HS-AFM, the spacing between slip bands and their height at different grains at the centre of the metal sample are measured and compared.

LanguageEnglish
Pages1-9
Number of pages9
JournalInternational Journal of Fatigue
Volume127
Early online date15 May 2019
DOIs
Publication statusE-pub ahead of print - 15 May 2019

Fingerprint

Fatigue testing
Atomic force microscopy
Stainless steel
Scanning electron microscopy
Fatigue of materials
Fatigue damage
Microcracks
Surface topography
Scanning
Metals

Keywords

  • Fatigue
  • Fatigue initiation
  • HS-AFM
  • In-situ observation
  • SEM

Cite this

Farokh Payam, Amir ; Payton, Oliver ; Picco, Loren ; Moore, Stacy ; Martin, Tomas ; Warren, A.D. ; Mostafavi, Mahmoud ; Knowles, David. / Development of Fatigue Testing System for in-situ Observation of Stainless Steel 316 by HS-AFM & SEM. 2019 ; Vol. 127. pp. 1-9.
@article{cf2e388a427c4259926c0a351bfd9d31,
title = "Development of Fatigue Testing System for in-situ Observation of Stainless Steel 316 by HS-AFM & SEM",
abstract = "A miniature three-point bend fatigue stage for in-situ observation of fatigue microcrack initiation and growth behaviour by scanning electron microscopy (SEM) and contact mode high-speed atomic force microscopy (HS-AFM) has been developed. Details of this stage are provided along with finite element simulations of the stress profiles of said stage and specimen on loading. The proposed stage facilitates study of the micro mechanisms of fatigue damage evolution when used during SEM and HS-AFM scanning of the sample surface. High amplitude low cycle fatigue tests have been carried out on annealed AISI Type 316 stainless steel to demonstrate the applicability of the system. Characteristic features of surface topography and evolution of slip bands observed have been documented. Images obtained by SEM and HS-AFM are presented for comparison. Finally, to demonstrate the capability of the new facility combined with HS-AFM, the spacing between slip bands and their height at different grains at the centre of the metal sample are measured and compared.",
keywords = "Fatigue, Fatigue initiation, HS-AFM, In-situ observation, SEM",
author = "{Farokh Payam}, Amir and Oliver Payton and Loren Picco and Stacy Moore and Tomas Martin and A.D. Warren and Mahmoud Mostafavi and David Knowles",
year = "2019",
month = "5",
day = "15",
doi = "10.1016/j.ijfatigue.2019.05.015",
language = "English",
volume = "127",
pages = "1--9",

}

Farokh Payam, A, Payton, O, Picco, L, Moore, S, Martin, T, Warren, AD, Mostafavi, M & Knowles, D 2019, 'Development of Fatigue Testing System for in-situ Observation of Stainless Steel 316 by HS-AFM & SEM', vol. 127, pp. 1-9. https://doi.org/10.1016/j.ijfatigue.2019.05.015

Development of Fatigue Testing System for in-situ Observation of Stainless Steel 316 by HS-AFM & SEM. / Farokh Payam, Amir; Payton, Oliver; Picco, Loren; Moore, Stacy; Martin, Tomas; Warren, A.D.; Mostafavi, Mahmoud; Knowles, David.

Vol. 127, 01.10.2019, p. 1-9.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Development of Fatigue Testing System for in-situ Observation of Stainless Steel 316 by HS-AFM & SEM

AU - Farokh Payam, Amir

AU - Payton, Oliver

AU - Picco, Loren

AU - Moore, Stacy

AU - Martin, Tomas

AU - Warren, A.D.

AU - Mostafavi, Mahmoud

AU - Knowles, David

PY - 2019/5/15

Y1 - 2019/5/15

N2 - A miniature three-point bend fatigue stage for in-situ observation of fatigue microcrack initiation and growth behaviour by scanning electron microscopy (SEM) and contact mode high-speed atomic force microscopy (HS-AFM) has been developed. Details of this stage are provided along with finite element simulations of the stress profiles of said stage and specimen on loading. The proposed stage facilitates study of the micro mechanisms of fatigue damage evolution when used during SEM and HS-AFM scanning of the sample surface. High amplitude low cycle fatigue tests have been carried out on annealed AISI Type 316 stainless steel to demonstrate the applicability of the system. Characteristic features of surface topography and evolution of slip bands observed have been documented. Images obtained by SEM and HS-AFM are presented for comparison. Finally, to demonstrate the capability of the new facility combined with HS-AFM, the spacing between slip bands and their height at different grains at the centre of the metal sample are measured and compared.

AB - A miniature three-point bend fatigue stage for in-situ observation of fatigue microcrack initiation and growth behaviour by scanning electron microscopy (SEM) and contact mode high-speed atomic force microscopy (HS-AFM) has been developed. Details of this stage are provided along with finite element simulations of the stress profiles of said stage and specimen on loading. The proposed stage facilitates study of the micro mechanisms of fatigue damage evolution when used during SEM and HS-AFM scanning of the sample surface. High amplitude low cycle fatigue tests have been carried out on annealed AISI Type 316 stainless steel to demonstrate the applicability of the system. Characteristic features of surface topography and evolution of slip bands observed have been documented. Images obtained by SEM and HS-AFM are presented for comparison. Finally, to demonstrate the capability of the new facility combined with HS-AFM, the spacing between slip bands and their height at different grains at the centre of the metal sample are measured and compared.

KW - Fatigue

KW - Fatigue initiation

KW - HS-AFM

KW - In-situ observation

KW - SEM

UR - http://www.scopus.com/inward/record.url?scp=85067984932&partnerID=8YFLogxK

U2 - 10.1016/j.ijfatigue.2019.05.015

DO - 10.1016/j.ijfatigue.2019.05.015

M3 - Article

VL - 127

SP - 1

EP - 9

ER -