Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1573714 | Materials Science and Engineering: A | 2016 | 5 Pages |
Abstract
The strain rate sensitivity (SRS) of Fe-22Mn-0.6C and Fe-30Mn-3Si-3Al twinning-induced plasticity (TWIP) steel was studied in the strain rate range from 10â4 to 10 °sâ1. The Fe-22Mn-0.6C steel exhibited negative SRS, while the Fe-30Mn-3Si-3Al steel showed positive SRS. Dynamic strain aging (DSA) was detected in Fe-22Mn-0.6C steel but not in Fe-30Mn-3Si-3Al steel. Accordingly, the two typical TWIP steels can be classified as DSA-facilitated and DSA-free TWIP steels. Meanwhile, the density of twin boundary obviously decreased in Fe-22Mn-0.6C steel but had little change in Fe-30Mn-3Si-3Al steel with increasing the strain rate. The different SRS phenomena were discussed based on the twinning mechanism and DSA effect.
Keywords
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Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
H.K. Yang, Y.Z. Tian, Z.J. Zhang, Z.F. Zhang,