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Effect of Intercritical Annealing Temperature on Development of Cold Rolled Dual Phase Steel from Q345 Steel

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Abstract:

Cold rolled dual phase steel was developed from Q345 steel by heat treatment procedure for automotive applications. The ultimate tensile strength was improved about 100MPa higher than the traditional cold-rolled Q345 steel in the continuous annealing simulation experiment. The microstructure presented varied characteristics in different intercritical annealing temperatures; mechanical properties were changed correspondingly as well. The chief discussions are focus on the recrystallization, hardenability of austenite and martensite transformation in the experiment.

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Periodical:

Applied Mechanics and Materials (Volumes 313-314)

Pages:

693-696

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.313-314.693

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Online since:

March 2013

Authors:

Ji Yuan Liu, Fu Xian Zhu, Shi Cheng Ma

Keywords:

Hardenability of Austenite, Intercritical Annealing Temperature, Microstructure, Q345 Steel, Recrystallization

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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