Fracture of Ni with grain-size from nanocrystalline to ultrafine scale under cyclic loading

S. Cheng; A. D. Stoica; X. L. Wang; G. Y. Wang; H. Choo; P. K. Liaw

doi:10.1016/j.scriptamat.2007.04.013

Fracture of Ni with grain-size from nanocrystalline to ultrafine scale under cyclic loading

S. Cheng, A. D. Stoica, X. L. Wang, G. Y. Wang, H. Choo, P. K. Liaw

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

20 Citations (Scopus)

Abstract

A two-step fatigue loading scheme was developed to study the fracture characteristics of nanocrystalline and ultrafine-grained Ni, with grain-sizes of 23 and 260 nm, respectively. Cyclic work-hardening, measured by the mid-loop width during cycling, was observed in both types of material in the first loading step. The loop width increases rapidly as the load is upgraded in the second step. Crack initiation and striation have been observed for the first time in nanocrystalline Ni. © 2007 Acta Materialia Inc.

Original language	English
Pages (from-to)	217-220
Journal	Scripta Materialia
Volume	57
Issue number	3
DOIs	https://doi.org/10.1016/j.scriptamat.2007.04.013
Publication status	Published - Aug 2007
Externally published	Yes

Research Keywords

Fatigue
Fracture surface
Nanocrystalline
Striation

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10.1016/j.scriptamat.2007.04.013

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title = "Fracture of Ni with grain-size from nanocrystalline to ultrafine scale under cyclic loading",

abstract = "A two-step fatigue loading scheme was developed to study the fracture characteristics of nanocrystalline and ultrafine-grained Ni, with grain-sizes of 23 and 260 nm, respectively. Cyclic work-hardening, measured by the mid-loop width during cycling, was observed in both types of material in the first loading step. The loop width increases rapidly as the load is upgraded in the second step. Crack initiation and striation have been observed for the first time in nanocrystalline Ni. {\textcopyright} 2007 Acta Materialia Inc.",

keywords = "Fatigue, Fracture surface, Nanocrystalline, Striation",

author = "S. Cheng and Stoica, {A. D.} and Wang, {X. L.} and Wang, {G. Y.} and H. Choo and Liaw, {P. K.}",

year = "2007",

month = aug,

doi = "10.1016/j.scriptamat.2007.04.013",

language = "English",

volume = "57",

pages = "217--220",

journal = "Scripta Materialia",

issn = "1359-6462",

publisher = "Acta Materialia Inc",

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TY - JOUR

T1 - Fracture of Ni with grain-size from nanocrystalline to ultrafine scale under cyclic loading

AU - Cheng, S.

AU - Stoica, A. D.

AU - Wang, X. L.

AU - Wang, G. Y.

AU - Choo, H.

AU - Liaw, P. K.

PY - 2007/8

Y1 - 2007/8

N2 - A two-step fatigue loading scheme was developed to study the fracture characteristics of nanocrystalline and ultrafine-grained Ni, with grain-sizes of 23 and 260 nm, respectively. Cyclic work-hardening, measured by the mid-loop width during cycling, was observed in both types of material in the first loading step. The loop width increases rapidly as the load is upgraded in the second step. Crack initiation and striation have been observed for the first time in nanocrystalline Ni. © 2007 Acta Materialia Inc.

AB - A two-step fatigue loading scheme was developed to study the fracture characteristics of nanocrystalline and ultrafine-grained Ni, with grain-sizes of 23 and 260 nm, respectively. Cyclic work-hardening, measured by the mid-loop width during cycling, was observed in both types of material in the first loading step. The loop width increases rapidly as the load is upgraded in the second step. Crack initiation and striation have been observed for the first time in nanocrystalline Ni. © 2007 Acta Materialia Inc.

KW - Fatigue

KW - Fracture surface

KW - Nanocrystalline

KW - Striation

UR - http://www.scopus.com/inward/record.url?scp=34248648796&partnerID=8YFLogxK

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-34248648796&origin=recordpage

U2 - 10.1016/j.scriptamat.2007.04.013

DO - 10.1016/j.scriptamat.2007.04.013

M3 - RGC 21 - Publication in refereed journal

SN - 1359-6462

VL - 57

SP - 217

EP - 220

JO - Scripta Materialia

JF - Scripta Materialia

IS - 3

ER -

Fracture of Ni with grain-size from nanocrystalline to ultrafine scale under cyclic loading

Abstract

Research Keywords

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