Microstructure and tensile behavior of duplex low-density steel containing 5 mass% aluminum

S. J. Park; B. Hwang; K. H. Lee; T. H. Lee; D. W. Suh; H. N. Han

doi:10.1016/j.scriptamat.2012.09.030

Microstructure and tensile behavior of duplex low-density steel containing 5 mass% aluminum

S. J. Park, B. Hwang, K. H. Lee, T. H. Lee, D. W. Suh, H. N. Han

Dept. of Materials Science & Engineering

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

168 Scopus citations

Abstract

The microstructure and tensile behavior of low-density steels containing 5 mass% Al were investigated. An alloy obtained under a specific heat treatment condition showed deformation-induced martensitic transformation, which yielded excellent mechanical properties of a high tensile strength of >900 MPa and a high total elongation of >50%. The volume fraction and grain size of the austenite depended on the annealing temperature, which resulted in a transition from stable to metastable behavior of the austenite. The effects of solute content on grains and of austenite grain size on stability were discussed.

Original language	English
Pages (from-to)	365-369
Number of pages	5
Journal	Scripta Materialia
Volume	68
Issue number	6
DOIs	https://doi.org/10.1016/j.scriptamat.2012.09.030
State	Published - Mar 2013

Keywords

Austenite
Deformation-induced martensitic transformation
EBSD
Low-density steel
Microstructure

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10.1016/j.scriptamat.2012.09.030

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title = "Microstructure and tensile behavior of duplex low-density steel containing 5 mass\% aluminum",

abstract = "The microstructure and tensile behavior of low-density steels containing 5 mass\% Al were investigated. An alloy obtained under a specific heat treatment condition showed deformation-induced martensitic transformation, which yielded excellent mechanical properties of a high tensile strength of >900 MPa and a high total elongation of >50\%. The volume fraction and grain size of the austenite depended on the annealing temperature, which resulted in a transition from stable to metastable behavior of the austenite. The effects of solute content on grains and of austenite grain size on stability were discussed.",

keywords = "Austenite, Deformation-induced martensitic transformation, EBSD, Low-density steel, Microstructure",

author = "Park, \{S. J.\} and B. Hwang and Lee, \{K. H.\} and Lee, \{T. H.\} and Suh, \{D. W.\} and Han, \{H. N.\}",

year = "2013",

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doi = "10.1016/j.scriptamat.2012.09.030",

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T1 - Microstructure and tensile behavior of duplex low-density steel containing 5 mass% aluminum

AU - Park, S. J.

AU - Hwang, B.

AU - Lee, K. H.

AU - Lee, T. H.

AU - Suh, D. W.

AU - Han, H. N.

PY - 2013/3

Y1 - 2013/3

N2 - The microstructure and tensile behavior of low-density steels containing 5 mass% Al were investigated. An alloy obtained under a specific heat treatment condition showed deformation-induced martensitic transformation, which yielded excellent mechanical properties of a high tensile strength of >900 MPa and a high total elongation of >50%. The volume fraction and grain size of the austenite depended on the annealing temperature, which resulted in a transition from stable to metastable behavior of the austenite. The effects of solute content on grains and of austenite grain size on stability were discussed.

AB - The microstructure and tensile behavior of low-density steels containing 5 mass% Al were investigated. An alloy obtained under a specific heat treatment condition showed deformation-induced martensitic transformation, which yielded excellent mechanical properties of a high tensile strength of >900 MPa and a high total elongation of >50%. The volume fraction and grain size of the austenite depended on the annealing temperature, which resulted in a transition from stable to metastable behavior of the austenite. The effects of solute content on grains and of austenite grain size on stability were discussed.

KW - Austenite

KW - Deformation-induced martensitic transformation

KW - EBSD

KW - Low-density steel

KW - Microstructure

UR - https://www.scopus.com/pages/publications/84872166546

U2 - 10.1016/j.scriptamat.2012.09.030

DO - 10.1016/j.scriptamat.2012.09.030

M3 - Article

AN - SCOPUS:84872166546

SN - 1359-6462

VL - 68

SP - 365

EP - 369

JO - Scripta Materialia

JF - Scripta Materialia

IS - 6

ER -

Microstructure and tensile behavior of duplex low-density steel containing 5 mass% aluminum

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Keywords

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