Breaking the strength-ductility paradox in advanced nanostructured Fe-based alloys through combined Cu and Mn additions
Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review
Author(s)
Related Research Unit(s)
Detail(s)
Original language | English |
---|---|
Pages (from-to) | 213-218 |
Journal / Publication | Scripta Materialia |
Volume | 186 |
Online published | 5 Jun 2020 |
Publication status | Published - Sep 2020 |
Link(s)
Abstract
The strength-ductility paradox is a long-sought challenge for all engineering materials. In this study, we escaped the strength-ductility trade-off by engineering nano-scale heterogeneities carefully in the advanced nanostructured Fe-based alloys through alloying with Cu and Mn additions. We demonstrated a triple ductility enhancement by 20% together with a strength improvement of 100MPa compared to the alloys with sole Cu additions, overturning a common understanding of the strength-ductility trade-off. The strength-ductility enhancement is attributed to the complex interplay between the transformation induced plasticity (TRIP) and the coherent nano-scale Cu precipitates as well as the resultant heterogeneous stress–strain partitioning and dislocation interactions.
Research Area(s)
- Advanced nanostructured Fe-based alloys, Grain boundary precipitation, Nano-scale Cu precipitation, Strength-ductility paradox, Transformation induced plasticity (TRIP)
Citation Format(s)
Breaking the strength-ductility paradox in advanced nanostructured Fe-based alloys through combined Cu and Mn additions. / Kong, H.J.; Yang, T.; Chen, R.; Yue, S.Q.; Zhang, T.L.; Cao, B.X.; Wang, C.; Liu, W.H.; Luan, J.H.; Jiao, Z.B.; Zhou, B.W.; Meng, L.G.; Wang, A.; Liu, C.T.
In: Scripta Materialia, Vol. 186, 09.2020, p. 213-218.Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review