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Mechanical Properties of Micro-Alloyed TRIP Steel

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Abstract:

The micro-alloying concepts have been widely used as a way to optimize the microstructure evolution and improve mechanical properties of conventional constructional steels. In the current study, the effect of micro-alloying on the properties of a multi-phase TRIP steel is analyzed. The micro-alloying of TRIP steel was found to lead to an increase of the yield stress rather than the tensile strength. A physical metallurgical explanation of the effect is proposed.

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Periodical:

Materials Science Forum (Volumes 654-656)

Pages:

242-245

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.654-656.242

Citation:

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Online since:

June 2010

Authors:

Jae Hyuk Jung, Sun Gil Kim, Bruno C. De Cooman

Keywords:

Microalloying, Precipitation, Retained Austenite Stability, TRIP Steel

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© 2010 Trans Tech Publications Ltd. All Rights Reserved

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DOI: 10.1002/srin.200405833

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16.

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18.

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20.

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22.

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24.

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26.

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28 Calculated n.

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10C.

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026Nb.

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028Ti.

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10C.

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026Nb.

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13C.

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021Nb Strain hardening coefficient, n.

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15C.

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017Nb Measured n 0 1 2 3 4 5 6 7 8 Strained Volume fraction of γγγγret.

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10C.

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026Nb.

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028Ti.

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10C.

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026Nb.

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13C.

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021Nb.

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15C.

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017Nb As annealed.

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