Correlation of microstructure with tensile behavior and properties of API X70 pipeline steels subjected to strain aging

Sang in Lee; Byoungchul Hwang

doi:10.1007/s42243-019-00313-y

Correlation of microstructure with tensile behavior and properties of API X70 pipeline steels subjected to strain aging

Sang in Lee, Byoungchul Hwang

Dept. of Materials Science & Engineering

Seoul National University of Science and Technology (SNUST)

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

13 Scopus citations

Abstract

Variations in tensile behavior and properties after pre-strain and thermal aging were differently affected by strain aging phenomenon dependent on microstructure. With increasing polygonal ferrite fraction, decrement in uniform elongation is increased, and the increment in yield-to-tensile ratio is slightly decreased after pre-strain and thermal aging. Therefore, it can be concluded that the polygonal ferrite has contradictory effects on strain aging resistance although the polygonal ferrite still contributes to improvement of uniform elongation after strain aging.

Original language	English
Pages (from-to)	319-324
Number of pages	6
Journal	Journal of Iron and Steel Research International
Volume	27
Issue number	3
DOIs	https://doi.org/10.1007/s42243-019-00313-y
State	Published - 1 Mar 2020

Keywords

Deformability
Microstructure
Pipeline
Steel
Strain aging

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10.1007/s42243-019-00313-y

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title = "Correlation of microstructure with tensile behavior and properties of API X70 pipeline steels subjected to strain aging",

abstract = "Variations in tensile behavior and properties after pre-strain and thermal aging were differently affected by strain aging phenomenon dependent on microstructure. With increasing polygonal ferrite fraction, decrement in uniform elongation is increased, and the increment in yield-to-tensile ratio is slightly decreased after pre-strain and thermal aging. Therefore, it can be concluded that the polygonal ferrite has contradictory effects on strain aging resistance although the polygonal ferrite still contributes to improvement of uniform elongation after strain aging.",

keywords = "Deformability, Microstructure, Pipeline, Steel, Strain aging",

author = "Lee, {Sang in} and Byoungchul Hwang",

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AU - Lee, Sang in

AU - Hwang, Byoungchul

PY - 2020/3/1

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N2 - Variations in tensile behavior and properties after pre-strain and thermal aging were differently affected by strain aging phenomenon dependent on microstructure. With increasing polygonal ferrite fraction, decrement in uniform elongation is increased, and the increment in yield-to-tensile ratio is slightly decreased after pre-strain and thermal aging. Therefore, it can be concluded that the polygonal ferrite has contradictory effects on strain aging resistance although the polygonal ferrite still contributes to improvement of uniform elongation after strain aging.

AB - Variations in tensile behavior and properties after pre-strain and thermal aging were differently affected by strain aging phenomenon dependent on microstructure. With increasing polygonal ferrite fraction, decrement in uniform elongation is increased, and the increment in yield-to-tensile ratio is slightly decreased after pre-strain and thermal aging. Therefore, it can be concluded that the polygonal ferrite has contradictory effects on strain aging resistance although the polygonal ferrite still contributes to improvement of uniform elongation after strain aging.

KW - Deformability

KW - Microstructure

KW - Pipeline

KW - Steel

KW - Strain aging

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JF - Journal of Iron and Steel Research International

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ER -

Correlation of microstructure with tensile behavior and properties of API X70 pipeline steels subjected to strain aging

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Keywords

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