Fatigue properties of thermally sprayed steel with Co-based self-fluxing alloy

Jun Komotori, N. Qu, M. Shimizu, K. Shirai

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Rotational-bending fatigue tests were performed on Co-based alloy thermally sprayed specimen with special focus on the effect of mixed NiCr weight ratio on coating microstructure and on fatigue properties. Effects of post heat treatment (fusing treatment) on coating microstructure and on fatigue strength after 107 cycles were also discussed. The results obtained are as follows: (1) There is considerable scatter in observed fatigue life for specimens sprayed with Co-based self-fluxing alloy. This is because each specimen has its own fatigue strength associated with different porosities and microstructures of coatings. (2) Fusing treatment temperature strongly affects the characteristics of sprayed coating in terms of microstructure and porosity. The fatigue strength of a sprayed specimen without fusing treatment was much lower than that of a steel substrate. An improvement of fatigue strength has been obtained by well controlled fusing treatment.

Original languageEnglish
Pages (from-to)2687-2692
Number of pages6
JournalNippon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
Volume62
Issue number604
Publication statusPublished - 1996 Dec
Externally publishedYes

Fingerprint

Steel
Fatigue of materials
Microstructure
Coatings
Porosity
Sprayed coatings
Heat treatment
Fatigue strength
Substrates
Temperature

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

Fatigue properties of thermally sprayed steel with Co-based self-fluxing alloy. / Komotori, Jun; Qu, N.; Shimizu, M.; Shirai, K.

In: Nippon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A, Vol. 62, No. 604, 12.1996, p. 2687-2692.

Research output: Contribution to journalArticle

@article{22f7f13fe9024d0f8806390b66e5996c,
title = "Fatigue properties of thermally sprayed steel with Co-based self-fluxing alloy",
abstract = "Rotational-bending fatigue tests were performed on Co-based alloy thermally sprayed specimen with special focus on the effect of mixed NiCr weight ratio on coating microstructure and on fatigue properties. Effects of post heat treatment (fusing treatment) on coating microstructure and on fatigue strength after 107 cycles were also discussed. The results obtained are as follows: (1) There is considerable scatter in observed fatigue life for specimens sprayed with Co-based self-fluxing alloy. This is because each specimen has its own fatigue strength associated with different porosities and microstructures of coatings. (2) Fusing treatment temperature strongly affects the characteristics of sprayed coating in terms of microstructure and porosity. The fatigue strength of a sprayed specimen without fusing treatment was much lower than that of a steel substrate. An improvement of fatigue strength has been obtained by well controlled fusing treatment.",
author = "Jun Komotori and N. Qu and M. Shimizu and K. Shirai",
year = "1996",
month = "12",
language = "English",
volume = "62",
pages = "2687--2692",
journal = "Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A",
issn = "0387-5008",
publisher = "Japan Society of Mechanical Engineers",
number = "604",

}

TY - JOUR

T1 - Fatigue properties of thermally sprayed steel with Co-based self-fluxing alloy

AU - Komotori, Jun

AU - Qu, N.

AU - Shimizu, M.

AU - Shirai, K.

PY - 1996/12

Y1 - 1996/12

N2 - Rotational-bending fatigue tests were performed on Co-based alloy thermally sprayed specimen with special focus on the effect of mixed NiCr weight ratio on coating microstructure and on fatigue properties. Effects of post heat treatment (fusing treatment) on coating microstructure and on fatigue strength after 107 cycles were also discussed. The results obtained are as follows: (1) There is considerable scatter in observed fatigue life for specimens sprayed with Co-based self-fluxing alloy. This is because each specimen has its own fatigue strength associated with different porosities and microstructures of coatings. (2) Fusing treatment temperature strongly affects the characteristics of sprayed coating in terms of microstructure and porosity. The fatigue strength of a sprayed specimen without fusing treatment was much lower than that of a steel substrate. An improvement of fatigue strength has been obtained by well controlled fusing treatment.

AB - Rotational-bending fatigue tests were performed on Co-based alloy thermally sprayed specimen with special focus on the effect of mixed NiCr weight ratio on coating microstructure and on fatigue properties. Effects of post heat treatment (fusing treatment) on coating microstructure and on fatigue strength after 107 cycles were also discussed. The results obtained are as follows: (1) There is considerable scatter in observed fatigue life for specimens sprayed with Co-based self-fluxing alloy. This is because each specimen has its own fatigue strength associated with different porosities and microstructures of coatings. (2) Fusing treatment temperature strongly affects the characteristics of sprayed coating in terms of microstructure and porosity. The fatigue strength of a sprayed specimen without fusing treatment was much lower than that of a steel substrate. An improvement of fatigue strength has been obtained by well controlled fusing treatment.

UR - http://www.scopus.com/inward/record.url?scp=0030371439&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0030371439&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0030371439

VL - 62

SP - 2687

EP - 2692

JO - Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A

JF - Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A

SN - 0387-5008

IS - 604

ER -