Extension of high cycle fatigue life by the formation of nano-sized martensite particles at intersections of dislocations in an austenitic stainless steel

T. Inamura, Masayuki Shimojo, K. Takashima, Y. Higo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

A new fatigue strengthening method which is applicable for both the micro-sized materials and ordinary-sized materials have been proposed. Dislocations are pinned at their intersections by the formation of nano-crystals after cold work in this strengthening method. Nano-sized α′-martensite particles, the diameter of which was approximately 5 nm, were formed by a cryogenic treatment at a certain temperature above M b (martensite burst starting temperature) in a commercially available 316-type austenitic stainless steel. These nano-particles are considered to be formed at intersections of dislocations. Fatigue life tests using ordinary-sized specimens revealed that high cycle fatigue life of the 316-type austenitic stainless steel was extended by the cryogenic treatment and this is considered to be due to the pinning of dislocations by the formation of nano-sized α′-martensite particles.

Original languageEnglish
Title of host publicationMaterials Research Society Symposium - Proceedings
EditorsD. Farkas, H. Kung, M. Mayo, H. Swygenhoven, J. Weertman
Volume634
Publication statusPublished - 2001
Externally publishedYes
EventStructure and Mechanical Properties of Nanophase Materials- Theory and Computer Si,ulation v.s Experiment - Boston, MA, United States
Duration: 2000 Nov 282000 Nov 30

Other

OtherStructure and Mechanical Properties of Nanophase Materials- Theory and Computer Si,ulation v.s Experiment
CountryUnited States
CityBoston, MA
Period00/11/2800/11/30

Fingerprint

Austenitic stainless steel
Martensite
Fatigue of materials
Cryogenics
Temperature
Crystals

Keywords

  • Fatigue life extension
  • Nano-sized α′-martensite
  • Pinning dislocations

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

Cite this

Inamura, T., Shimojo, M., Takashima, K., & Higo, Y. (2001). Extension of high cycle fatigue life by the formation of nano-sized martensite particles at intersections of dislocations in an austenitic stainless steel. In D. Farkas, H. Kung, M. Mayo, H. Swygenhoven, & J. Weertman (Eds.), Materials Research Society Symposium - Proceedings (Vol. 634)

Extension of high cycle fatigue life by the formation of nano-sized martensite particles at intersections of dislocations in an austenitic stainless steel. / Inamura, T.; Shimojo, Masayuki; Takashima, K.; Higo, Y.

Materials Research Society Symposium - Proceedings. ed. / D. Farkas; H. Kung; M. Mayo; H. Swygenhoven; J. Weertman. Vol. 634 2001.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Inamura, T, Shimojo, M, Takashima, K & Higo, Y 2001, Extension of high cycle fatigue life by the formation of nano-sized martensite particles at intersections of dislocations in an austenitic stainless steel. in D Farkas, H Kung, M Mayo, H Swygenhoven & J Weertman (eds), Materials Research Society Symposium - Proceedings. vol. 634, Structure and Mechanical Properties of Nanophase Materials- Theory and Computer Si,ulation v.s Experiment, Boston, MA, United States, 00/11/28.
Inamura T, Shimojo M, Takashima K, Higo Y. Extension of high cycle fatigue life by the formation of nano-sized martensite particles at intersections of dislocations in an austenitic stainless steel. In Farkas D, Kung H, Mayo M, Swygenhoven H, Weertman J, editors, Materials Research Society Symposium - Proceedings. Vol. 634. 2001
Inamura, T. ; Shimojo, Masayuki ; Takashima, K. ; Higo, Y. / Extension of high cycle fatigue life by the formation of nano-sized martensite particles at intersections of dislocations in an austenitic stainless steel. Materials Research Society Symposium - Proceedings. editor / D. Farkas ; H. Kung ; M. Mayo ; H. Swygenhoven ; J. Weertman. Vol. 634 2001.
@inproceedings{8c4709de3aa14c51947ed6e876497220,
title = "Extension of high cycle fatigue life by the formation of nano-sized martensite particles at intersections of dislocations in an austenitic stainless steel",
abstract = "A new fatigue strengthening method which is applicable for both the micro-sized materials and ordinary-sized materials have been proposed. Dislocations are pinned at their intersections by the formation of nano-crystals after cold work in this strengthening method. Nano-sized α′-martensite particles, the diameter of which was approximately 5 nm, were formed by a cryogenic treatment at a certain temperature above M sα b (martensite burst starting temperature) in a commercially available 316-type austenitic stainless steel. These nano-particles are considered to be formed at intersections of dislocations. Fatigue life tests using ordinary-sized specimens revealed that high cycle fatigue life of the 316-type austenitic stainless steel was extended by the cryogenic treatment and this is considered to be due to the pinning of dislocations by the formation of nano-sized α′-martensite particles.",
keywords = "Fatigue life extension, Nano-sized α′-martensite, Pinning dislocations",
author = "T. Inamura and Masayuki Shimojo and K. Takashima and Y. Higo",
year = "2001",
language = "English",
volume = "634",
editor = "D. Farkas and H. Kung and M. Mayo and H. Swygenhoven and J. Weertman",
booktitle = "Materials Research Society Symposium - Proceedings",

}

TY - GEN

T1 - Extension of high cycle fatigue life by the formation of nano-sized martensite particles at intersections of dislocations in an austenitic stainless steel

AU - Inamura, T.

AU - Shimojo, Masayuki

AU - Takashima, K.

AU - Higo, Y.

PY - 2001

Y1 - 2001

N2 - A new fatigue strengthening method which is applicable for both the micro-sized materials and ordinary-sized materials have been proposed. Dislocations are pinned at their intersections by the formation of nano-crystals after cold work in this strengthening method. Nano-sized α′-martensite particles, the diameter of which was approximately 5 nm, were formed by a cryogenic treatment at a certain temperature above M sα b (martensite burst starting temperature) in a commercially available 316-type austenitic stainless steel. These nano-particles are considered to be formed at intersections of dislocations. Fatigue life tests using ordinary-sized specimens revealed that high cycle fatigue life of the 316-type austenitic stainless steel was extended by the cryogenic treatment and this is considered to be due to the pinning of dislocations by the formation of nano-sized α′-martensite particles.

AB - A new fatigue strengthening method which is applicable for both the micro-sized materials and ordinary-sized materials have been proposed. Dislocations are pinned at their intersections by the formation of nano-crystals after cold work in this strengthening method. Nano-sized α′-martensite particles, the diameter of which was approximately 5 nm, were formed by a cryogenic treatment at a certain temperature above M sα b (martensite burst starting temperature) in a commercially available 316-type austenitic stainless steel. These nano-particles are considered to be formed at intersections of dislocations. Fatigue life tests using ordinary-sized specimens revealed that high cycle fatigue life of the 316-type austenitic stainless steel was extended by the cryogenic treatment and this is considered to be due to the pinning of dislocations by the formation of nano-sized α′-martensite particles.

KW - Fatigue life extension

KW - Nano-sized α′-martensite

KW - Pinning dislocations

UR - http://www.scopus.com/inward/record.url?scp=0034866324&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0034866324&partnerID=8YFLogxK

M3 - Conference contribution

VL - 634

BT - Materials Research Society Symposium - Proceedings

A2 - Farkas, D.

A2 - Kung, H.

A2 - Mayo, M.

A2 - Swygenhoven, H.

A2 - Weertman, J.

ER -