Cyclic strain hardening of polygonal and acicular ferrite/bainite microstructures in microalloyed steels in the temperature range - 150°C to 27°C

J. P. Lucas; W. W. Gerberich

doi:10.1016/0142-1123(85)90005-2

Cyclic strain hardening of polygonal and acicular ferrite/bainite microstructures in microalloyed steels in the temperature range - 150°C to 27°C

J. P. Lucas, W. W. Gerberich

Chemical Engineering and Materials Science

Research output: Contribution to journal › Article › peer-review

20 Scopus citations

Abstract

Cyclic strain hardening has been observed to be markedly sensitive to microstructural changes in microalloyed steels. Two significantly different microstructures - polygonal ferrite grains of average grain size 10-120 μm and acicular ferrite/upper bainite colonies of dimensions 200-625 μm - were examined in order to determine the influence of each on cyclic strain hardening and related properties. Tests were conducted at temperatures between -150 and 27°C. The cyclic strain hardening exponent, β_c, was significantly more sensitive to changes in the size of the polygonal ferrite grains than to changes in the acicular ferrite/upper bainite colony size.

Original language	English (US)
Pages (from-to)	31-38
Number of pages	8
Journal	International Journal of Fatigue
Volume	7
Issue number	1
DOIs	https://doi.org/10.1016/0142-1123(85)90005-2
State	Published - Jan 1985

Bibliographical note

Funding Information:
This work was performed at the Sandia National Laboratories supported by the US Department of Energy under contract number DE-AC04-76DPO0789. Partial financial support was further provided under grant number DOE-DE AC02-79ER10433, also from the Department of Energy.

Keywords

cyclic hardening
grain size
low cycle fatigue
low temperatures
microalloyed steels
microstructure

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@article{69fefc8e87114a758975715162431d7a,

title = "Cyclic strain hardening of polygonal and acicular ferrite/bainite microstructures in microalloyed steels in the temperature range - 150°C to 27°C",

abstract = "Cyclic strain hardening has been observed to be markedly sensitive to microstructural changes in microalloyed steels. Two significantly different microstructures - polygonal ferrite grains of average grain size 10-120 μm and acicular ferrite/upper bainite colonies of dimensions 200-625 μm - were examined in order to determine the influence of each on cyclic strain hardening and related properties. Tests were conducted at temperatures between -150 and 27°C. The cyclic strain hardening exponent, βc, was significantly more sensitive to changes in the size of the polygonal ferrite grains than to changes in the acicular ferrite/upper bainite colony size.",

keywords = "cyclic hardening, grain size, low cycle fatigue, low temperatures, microalloyed steels, microstructure",

author = "Lucas, {J. P.} and Gerberich, {W. W.}",

note = "Funding Information: This work was performed at the Sandia National Laboratories supported by the US Department of Energy under contract number DE-AC04-76DPO0789. Partial financial support was further provided under grant number DOE-DE AC02-79ER10433, also from the Department of Energy.",

year = "1985",

month = jan,

doi = "10.1016/0142-1123(85)90005-2",

language = "English (US)",

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journal = "International Journal of Fatigue",

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AU - Lucas, J. P.

AU - Gerberich, W. W.

N1 - Funding Information: This work was performed at the Sandia National Laboratories supported by the US Department of Energy under contract number DE-AC04-76DPO0789. Partial financial support was further provided under grant number DOE-DE AC02-79ER10433, also from the Department of Energy.

PY - 1985/1

Y1 - 1985/1

N2 - Cyclic strain hardening has been observed to be markedly sensitive to microstructural changes in microalloyed steels. Two significantly different microstructures - polygonal ferrite grains of average grain size 10-120 μm and acicular ferrite/upper bainite colonies of dimensions 200-625 μm - were examined in order to determine the influence of each on cyclic strain hardening and related properties. Tests were conducted at temperatures between -150 and 27°C. The cyclic strain hardening exponent, βc, was significantly more sensitive to changes in the size of the polygonal ferrite grains than to changes in the acicular ferrite/upper bainite colony size.

AB - Cyclic strain hardening has been observed to be markedly sensitive to microstructural changes in microalloyed steels. Two significantly different microstructures - polygonal ferrite grains of average grain size 10-120 μm and acicular ferrite/upper bainite colonies of dimensions 200-625 μm - were examined in order to determine the influence of each on cyclic strain hardening and related properties. Tests were conducted at temperatures between -150 and 27°C. The cyclic strain hardening exponent, βc, was significantly more sensitive to changes in the size of the polygonal ferrite grains than to changes in the acicular ferrite/upper bainite colony size.

KW - cyclic hardening

KW - grain size

KW - low cycle fatigue

KW - low temperatures

KW - microalloyed steels

KW - microstructure

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Cyclic strain hardening of polygonal and acicular ferrite/bainite microstructures in microalloyed steels in the temperature range - 150°C to 27°C

Abstract

Bibliographical note

Keywords

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