ON THE RELATIONSHIP BETWEEN DELAMINATION WEAR AND THE INITIATION AND GROWTH OF FATIGUE CRACKS IN ULTRAHIGH STRENGTH STEEL

R. O. Ritchie

ON THE RELATIONSHIP BETWEEN DELAMINATION WEAR AND THE INITIATION AND GROWTH OF FATIGUE CRACKS IN ULTRAHIGH STRENGTH STEEL

R. O. Ritchie

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

Abstract

near-threshold fatigue crack propagation in an ultrahigh strength steel (300-M) show similar resistance to sliding wear in ewnvironments of ambient temperature air. Effects of tempering temperature and hardness were specifically investigated. It was found that wear resistance in this steel bore no direct relationship to crack propagation resistance, whereas a direct correlation was found with resistance to crack intitiation (or more correctly the initiation and growth of microcracks). The significance of these results are discussed in the light of the limiting mechanisms for delamination wear in ultrahigh strength steels and the size-scale of the events involved. (A) According to the delamination theory of sliding wear, wear damage can result from cyclic shear deformation due to surface traction exerted by asperities leading to sub-surface initiation and propagation of fatigue cracks (under combined Mode I and II conditions). Estimates of the rate of such fatigue crack propagation under sliding wear conditions in steels have been found to be in the near-threshold regime (i.e., typically below 10SUB-SUB5mm/cycle). Accordingly, the objective of this work was to investigate whether microstructures which are known to be highly resistant to Mode I.

Original language	English
Title of host publication	Fundamentals of Tribology
Subtitle of host publication	Proceedings of the International Conference on the Fundamentals of Tribology, Held at the Massachusetts Institute of Technology, Cambridge, Massachusetts, June 1978
Editors	Nannaji Saka, Nam P. Suh
Place of Publication	Cambridge
Publisher	MIT Press
Pages	127-134
ISBN (Print)	0262191830, 9780262191838
Publication status	Published - Apr 1980
Externally published	Yes
Event	International Conference on the Fundamentals of Tribology 1978 - Cambridge, Massachusetts, United States Duration: 19 Jun 1978 → 22 Jun 1978

Conference

Conference	International Conference on the Fundamentals of Tribology 1978
Place	United States
City	Cambridge, Massachusetts
Period	19/06/78 → 22/06/78

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Ritchie, R. O. (1980). ON THE RELATIONSHIP BETWEEN DELAMINATION WEAR AND THE INITIATION AND GROWTH OF FATIGUE CRACKS IN ULTRAHIGH STRENGTH STEEL. In N. Saka, & N. P. Suh (Eds.), Fundamentals of Tribology: Proceedings of the International Conference on the Fundamentals of Tribology, Held at the Massachusetts Institute of Technology, Cambridge, Massachusetts, June 1978 (pp. 127-134). MIT Press.

Ritchie, R. O. / ON THE RELATIONSHIP BETWEEN DELAMINATION WEAR AND THE INITIATION AND GROWTH OF FATIGUE CRACKS IN ULTRAHIGH STRENGTH STEEL. Fundamentals of Tribology: Proceedings of the International Conference on the Fundamentals of Tribology, Held at the Massachusetts Institute of Technology, Cambridge, Massachusetts, June 1978. editor / Nannaji Saka ; Nam P. Suh. Cambridge : MIT Press, 1980. pp. 127-134

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title = "ON THE RELATIONSHIP BETWEEN DELAMINATION WEAR AND THE INITIATION AND GROWTH OF FATIGUE CRACKS IN ULTRAHIGH STRENGTH STEEL",

abstract = "near-threshold fatigue crack propagation in an ultrahigh strength steel (300-M) show similar resistance to sliding wear in ewnvironments of ambient temperature air. Effects of tempering temperature and hardness were specifically investigated. It was found that wear resistance in this steel bore no direct relationship to crack propagation resistance, whereas a direct correlation was found with resistance to crack intitiation (or more correctly the initiation and growth of microcracks). The significance of these results are discussed in the light of the limiting mechanisms for delamination wear in ultrahigh strength steels and the size-scale of the events involved. (A) According to the delamination theory of sliding wear, wear damage can result from cyclic shear deformation due to surface traction exerted by asperities leading to sub-surface initiation and propagation of fatigue cracks (under combined Mode I and II conditions). Estimates of the rate of such fatigue crack propagation under sliding wear conditions in steels have been found to be in the near-threshold regime (i.e., typically below 10SUB-SUB5mm/cycle). Accordingly, the objective of this work was to investigate whether microstructures which are known to be highly resistant to Mode I.",

author = "Ritchie, \{R. O.\}",

year = "1980",

month = apr,

language = "English",

isbn = "0262191830",

pages = "127--134",

editor = "Nannaji Saka and Suh, \{Nam P.\}",

booktitle = "Fundamentals of Tribology",

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address = "United States",

note = "International Conference on the Fundamentals of Tribology 1978 ; Conference date: 19-06-1978 Through 22-06-1978",

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Ritchie, RO 1980, ON THE RELATIONSHIP BETWEEN DELAMINATION WEAR AND THE INITIATION AND GROWTH OF FATIGUE CRACKS IN ULTRAHIGH STRENGTH STEEL. in N Saka & NP Suh (eds), Fundamentals of Tribology: Proceedings of the International Conference on the Fundamentals of Tribology, Held at the Massachusetts Institute of Technology, Cambridge, Massachusetts, June 1978. MIT Press, Cambridge, pp. 127-134, International Conference on the Fundamentals of Tribology 1978, Cambridge, Massachusetts, United States, 19/06/78.

ON THE RELATIONSHIP BETWEEN DELAMINATION WEAR AND THE INITIATION AND GROWTH OF FATIGUE CRACKS IN ULTRAHIGH STRENGTH STEEL. / Ritchie, R. O.
Fundamentals of Tribology: Proceedings of the International Conference on the Fundamentals of Tribology, Held at the Massachusetts Institute of Technology, Cambridge, Massachusetts, June 1978. ed. / Nannaji Saka; Nam P. Suh. Cambridge: MIT Press, 1980. p. 127-134.

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

TY - GEN

T1 - ON THE RELATIONSHIP BETWEEN DELAMINATION WEAR AND THE INITIATION AND GROWTH OF FATIGUE CRACKS IN ULTRAHIGH STRENGTH STEEL

AU - Ritchie, R. O.

PY - 1980/4

Y1 - 1980/4

N2 - near-threshold fatigue crack propagation in an ultrahigh strength steel (300-M) show similar resistance to sliding wear in ewnvironments of ambient temperature air. Effects of tempering temperature and hardness were specifically investigated. It was found that wear resistance in this steel bore no direct relationship to crack propagation resistance, whereas a direct correlation was found with resistance to crack intitiation (or more correctly the initiation and growth of microcracks). The significance of these results are discussed in the light of the limiting mechanisms for delamination wear in ultrahigh strength steels and the size-scale of the events involved. (A) According to the delamination theory of sliding wear, wear damage can result from cyclic shear deformation due to surface traction exerted by asperities leading to sub-surface initiation and propagation of fatigue cracks (under combined Mode I and II conditions). Estimates of the rate of such fatigue crack propagation under sliding wear conditions in steels have been found to be in the near-threshold regime (i.e., typically below 10SUB-SUB5mm/cycle). Accordingly, the objective of this work was to investigate whether microstructures which are known to be highly resistant to Mode I.

AB - near-threshold fatigue crack propagation in an ultrahigh strength steel (300-M) show similar resistance to sliding wear in ewnvironments of ambient temperature air. Effects of tempering temperature and hardness were specifically investigated. It was found that wear resistance in this steel bore no direct relationship to crack propagation resistance, whereas a direct correlation was found with resistance to crack intitiation (or more correctly the initiation and growth of microcracks). The significance of these results are discussed in the light of the limiting mechanisms for delamination wear in ultrahigh strength steels and the size-scale of the events involved. (A) According to the delamination theory of sliding wear, wear damage can result from cyclic shear deformation due to surface traction exerted by asperities leading to sub-surface initiation and propagation of fatigue cracks (under combined Mode I and II conditions). Estimates of the rate of such fatigue crack propagation under sliding wear conditions in steels have been found to be in the near-threshold regime (i.e., typically below 10SUB-SUB5mm/cycle). Accordingly, the objective of this work was to investigate whether microstructures which are known to be highly resistant to Mode I.

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M3 - RGC 32 - Refereed conference paper (with host publication)

SN - 0262191830

SN - 9780262191838

SP - 127

EP - 134

BT - Fundamentals of Tribology

A2 - Saka, Nannaji

A2 - Suh, Nam P.

PB - MIT Press

CY - Cambridge

T2 - International Conference on the Fundamentals of Tribology 1978

Y2 - 19 June 1978 through 22 June 1978

ER -

Ritchie RO. ON THE RELATIONSHIP BETWEEN DELAMINATION WEAR AND THE INITIATION AND GROWTH OF FATIGUE CRACKS IN ULTRAHIGH STRENGTH STEEL. In Saka N, Suh NP, editors, Fundamentals of Tribology: Proceedings of the International Conference on the Fundamentals of Tribology, Held at the Massachusetts Institute of Technology, Cambridge, Massachusetts, June 1978. Cambridge: MIT Press. 1980. p. 127-134

ON THE RELATIONSHIP BETWEEN DELAMINATION WEAR AND THE INITIATION AND GROWTH OF FATIGUE CRACKS IN ULTRAHIGH STRENGTH STEEL

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