Simultaneously improving the strength and ductility of coarse-grained Hadfield steel with increasing strain rate

In general, the strength of coarse-grained metals rises with increases in the strain rate, while the ductility decreases. However, the strength and ductility of Hadfield steel increased simultaneously with an increase in the strain rate. A maximum elongation of 64% combined with true strength of 159...

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Bibliographic Details
Published inScripta materialia Vol. 66; no. 7; pp. 431 - 434
Main Authors Liu, F.C., Yang, Z.N., Zheng, C.L., Zhang, F.C.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.04.2012
Subjects
Deformation twin
Ductility
Steel
Strain hardening
Strength
Steel
Deformation twin
Ductility
Strain hardening
Strength
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Summary:In general, the strength of coarse-grained metals rises with increases in the strain rate, while the ductility decreases. However, the strength and ductility of Hadfield steel increased simultaneously with an increase in the strain rate. A maximum elongation of 64% combined with true strength of 1596MPa was obtained at a high strain rate of 1×101s−1. This is associated with the fact that Hadfield steel exhibits more strain-induced deformation twins at higher strain rates.
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2011.12.005