Effect of initial microstructure on the creep behavior of TMCP EH36 and SM490C steels

S. H. Wang; C. C. Chiang; S. L.I. Chan

doi:10.1016/S0921-5093(02)00425-2

Effect of initial microstructure on the creep behavior of TMCP EH36 and SM490C steels

S. H. Wang, C. C. Chiang, S. L.I. Chan

Department of Chemical and Materials Engineering

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

18 Scopus citations

Abstract

Two steels, TMCP EH36 and SM490C, were prepared with the same composition but different rolling processes. The equiaxed grain of TMCP EH36 steel was produced by thermo-mechanical control rolling (TMCP) with an accelerated cooling process. The banded structure of SM490C steel was produced using a conventional hot rolling process. After creep, the results show that the apparent activation energy and apparent stress exponent in the band structure of SM490C steel are much higher than that in the equiaxed grain of TMCP EH36 steel. The creep stress exponent value from the threshold stress, σ₀, concept in the dispersion strengthening mechanism can explain how the second phase distribution and morphology have an important effect on the creep behavior in this study.

Original language	English
Pages (from-to)	288-295
Number of pages	8
Journal	Materials Science and Engineering A
Volume	344
Issue number	1-2
DOIs	https://doi.org/10.1016/S0921-5093(02)00425-2
State	Published - 15 Mar 2003

Keywords

Activation energy
Creep
Threshold stress
TMCP

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10.1016/S0921-5093(02)00425-2

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title = "Effect of initial microstructure on the creep behavior of TMCP EH36 and SM490C steels",

abstract = "Two steels, TMCP EH36 and SM490C, were prepared with the same composition but different rolling processes. The equiaxed grain of TMCP EH36 steel was produced by thermo-mechanical control rolling (TMCP) with an accelerated cooling process. The banded structure of SM490C steel was produced using a conventional hot rolling process. After creep, the results show that the apparent activation energy and apparent stress exponent in the band structure of SM490C steel are much higher than that in the equiaxed grain of TMCP EH36 steel. The creep stress exponent value from the threshold stress, σ0, concept in the dispersion strengthening mechanism can explain how the second phase distribution and morphology have an important effect on the creep behavior in this study.",

keywords = "Activation energy, Creep, Threshold stress, TMCP",

author = "Wang, {S. H.} and Chiang, {C. C.} and Chan, {S. L.I.}",

note = "Funding Information: Financial support from the National Science Council of the Republic of China, Taiwan under contract no. NSC 87-2216-E-019-007 is gratefully acknowledged.",

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T1 - Effect of initial microstructure on the creep behavior of TMCP EH36 and SM490C steels

AU - Wang, S. H.

AU - Chiang, C. C.

AU - Chan, S. L.I.

N1 - Funding Information: Financial support from the National Science Council of the Republic of China, Taiwan under contract no. NSC 87-2216-E-019-007 is gratefully acknowledged.

PY - 2003/3/15

Y1 - 2003/3/15

N2 - Two steels, TMCP EH36 and SM490C, were prepared with the same composition but different rolling processes. The equiaxed grain of TMCP EH36 steel was produced by thermo-mechanical control rolling (TMCP) with an accelerated cooling process. The banded structure of SM490C steel was produced using a conventional hot rolling process. After creep, the results show that the apparent activation energy and apparent stress exponent in the band structure of SM490C steel are much higher than that in the equiaxed grain of TMCP EH36 steel. The creep stress exponent value from the threshold stress, σ0, concept in the dispersion strengthening mechanism can explain how the second phase distribution and morphology have an important effect on the creep behavior in this study.

AB - Two steels, TMCP EH36 and SM490C, were prepared with the same composition but different rolling processes. The equiaxed grain of TMCP EH36 steel was produced by thermo-mechanical control rolling (TMCP) with an accelerated cooling process. The banded structure of SM490C steel was produced using a conventional hot rolling process. After creep, the results show that the apparent activation energy and apparent stress exponent in the band structure of SM490C steel are much higher than that in the equiaxed grain of TMCP EH36 steel. The creep stress exponent value from the threshold stress, σ0, concept in the dispersion strengthening mechanism can explain how the second phase distribution and morphology have an important effect on the creep behavior in this study.

KW - Activation energy

KW - Creep

KW - Threshold stress

KW - TMCP

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U2 - 10.1016/S0921-5093(02)00425-2

DO - 10.1016/S0921-5093(02)00425-2

M3 - 期刊論文

AN - SCOPUS:0037444149

SN - 0921-5093

VL - 344

SP - 288

EP - 295

JO - Materials Science and Engineering A

JF - Materials Science and Engineering A

IS - 1-2

ER -

Effect of initial microstructure on the creep behavior of TMCP EH36 and SM490C steels

Abstract

Keywords

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