Formability of ultrafine-grained interstitial-free steel fabricated by accumulative roll-bonding and subsequent annealing

doi:10.1016/j.scriptamat.2011.02.002

Scripta Materialia

Volume 65, Issue 3, August 2011, Pages 175-178

https://doi.org/10.1016/j.scriptamat.2011.02.002 Get rights and content

The miniaturized Erichsen test was successfully developed for evaluating the stretch formability of the ARB and annealed IF steel sheets. The Erichsen value tends to decrease as the average grain size becomes small. However, it should be emphasized that even in the specimen with ultrafine grain, a high Erichsen value is obtained. This result indicates that the ultrafine grained IF steel sheet could be highly deformed under multiaxial stress.

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Citation Excerpt :
Various types of advanced high strength steel is under development like quench and partitioning steel which has ultrafine grain multiphase structure along with second phase particles [4-6]. By using grain refinement technique to micrometer range advanced high strength steel with superior strength [7], good low temperature toughness [8] and high stretch formability [9] has been observed. Those structures of steel composed of grain size less than 100 nm are called nano-crystalline material [10].
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Formability of ultrafine-grained interstitial-free steel fabricated by accumulative roll-bonding and subsequent annealing

Scripta Mater.

Mater. Sci. Eng.

Mater. Sci. Eng.

Scripta Mater.

Scripta Mater.

Adv. Eng. Mater.

Mater. Trans.

Materia

Mater. Trans.