Microstructures and mechanical properties of dual phase steel produced by laboratory simulated strip casting

Z. P. Xiong; A. G. Kostryzhev; N. E. Stanford; E. V. Pereloma

doi:10.1016/j.matdes.2015.09.031

Microstructures and mechanical properties of dual phase steel produced by laboratory simulated strip casting

Z. P. Xiong^*, A. G. Kostryzhev, N. E. Stanford, E. V. Pereloma

^*此作品的通讯作者

科研成果: 期刊稿件 › 文章 › 同行评审

66 引用（Scopus）

摘要

Conventional dual phase (DP) steel (0.08C-0.81Si-1.47Mn-0.03Al wt.%) was manufactured using simulated strip casting schedule in laboratory. The average grain size of prior austenite was 117. ±. 44. μm. The continuous cooling transformation diagram was obtained. The microstructures having polygonal ferrite in the range of 40-90%, martensite with small amount of bainite and Widmanstätten ferrite were observed, leading to an ultimate tensile strength in the range of 461-623. MPa and a corresponding total elongation in the range of 0.31-0.10. All samples exhibited three strain hardening stages. The predominant fracture mode of the studied steel was ductile, with the presence of some isolated cleavage facets, the number of which increased with an increase in martensite fraction. Compared to those of hot rolled DP steels, yield strength and ultimate tensile strength are lower due to large ferrite grain size, coarse martensite area and Widmanstätten ferrite.

源语言	英语
页（从-至）	537-549
页数	13
期刊	Materials and Design
卷	88
DOI	https://doi.org/10.1016/j.matdes.2015.09.031
出版状态	已出版 - 25 12月 2015
已对外发布	是

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title = "Microstructures and mechanical properties of dual phase steel produced by laboratory simulated strip casting",

abstract = "Conventional dual phase (DP) steel (0.08C-0.81Si-1.47Mn-0.03Al wt.%) was manufactured using simulated strip casting schedule in laboratory. The average grain size of prior austenite was 117. ±. 44. μm. The continuous cooling transformation diagram was obtained. The microstructures having polygonal ferrite in the range of 40-90%, martensite with small amount of bainite and Widmanst{\"a}tten ferrite were observed, leading to an ultimate tensile strength in the range of 461-623. MPa and a corresponding total elongation in the range of 0.31-0.10. All samples exhibited three strain hardening stages. The predominant fracture mode of the studied steel was ductile, with the presence of some isolated cleavage facets, the number of which increased with an increase in martensite fraction. Compared to those of hot rolled DP steels, yield strength and ultimate tensile strength are lower due to large ferrite grain size, coarse martensite area and Widmanst{\"a}tten ferrite.",

keywords = "Continuous cooling transformation diagram, Crussard-Jaoul model, Dual phase steel, Electron microscopy, Mechanical properties, Strip casting",

author = "Xiong, {Z. P.} and Kostryzhev, {A. G.} and Stanford, {N. E.} and Pereloma, {E. V.}",

note = "Publisher Copyright: {\textcopyright} 2015 Elsevier Ltd.",

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doi = "10.1016/j.matdes.2015.09.031",

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T1 - Microstructures and mechanical properties of dual phase steel produced by laboratory simulated strip casting

AU - Xiong, Z. P.

AU - Kostryzhev, A. G.

AU - Stanford, N. E.

AU - Pereloma, E. V.

PY - 2015/12/25

Y1 - 2015/12/25

N2 - Conventional dual phase (DP) steel (0.08C-0.81Si-1.47Mn-0.03Al wt.%) was manufactured using simulated strip casting schedule in laboratory. The average grain size of prior austenite was 117. ±. 44. μm. The continuous cooling transformation diagram was obtained. The microstructures having polygonal ferrite in the range of 40-90%, martensite with small amount of bainite and Widmanstätten ferrite were observed, leading to an ultimate tensile strength in the range of 461-623. MPa and a corresponding total elongation in the range of 0.31-0.10. All samples exhibited three strain hardening stages. The predominant fracture mode of the studied steel was ductile, with the presence of some isolated cleavage facets, the number of which increased with an increase in martensite fraction. Compared to those of hot rolled DP steels, yield strength and ultimate tensile strength are lower due to large ferrite grain size, coarse martensite area and Widmanstätten ferrite.

AB - Conventional dual phase (DP) steel (0.08C-0.81Si-1.47Mn-0.03Al wt.%) was manufactured using simulated strip casting schedule in laboratory. The average grain size of prior austenite was 117. ±. 44. μm. The continuous cooling transformation diagram was obtained. The microstructures having polygonal ferrite in the range of 40-90%, martensite with small amount of bainite and Widmanstätten ferrite were observed, leading to an ultimate tensile strength in the range of 461-623. MPa and a corresponding total elongation in the range of 0.31-0.10. All samples exhibited three strain hardening stages. The predominant fracture mode of the studied steel was ductile, with the presence of some isolated cleavage facets, the number of which increased with an increase in martensite fraction. Compared to those of hot rolled DP steels, yield strength and ultimate tensile strength are lower due to large ferrite grain size, coarse martensite area and Widmanstätten ferrite.

KW - Continuous cooling transformation diagram

KW - Crussard-Jaoul model

KW - Dual phase steel

KW - Electron microscopy

KW - Mechanical properties

KW - Strip casting

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DO - 10.1016/j.matdes.2015.09.031

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JO - Materials and Design

JF - Materials and Design

ER -

Microstructures and mechanical properties of dual phase steel produced by laboratory simulated strip casting

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