TY  - JOUR
AU  - Shi, Yindong
AU  - Zhang, Haojie
AU  - Wang, Lina
AU  - liu, tao
AU  - Zhang, Xiliang
AU  - Yang, Xinrui
AU  - Xing, Zhenguo
AU  - Zhu, Yuntian
TI  - Global 3D-gradient-structured steel sheets with superior strength-ductility combination
JO  - Materials science & engineering / A
VL  - 935
SN  - 0921-5093
CY  - Amsterdam
PB  - Elsevier
M1  - PUBDB-2025-03628
SP  - 148383
PY  - 2025
N1  - Waiting for fulltext 
AB  - Global gradient structures (GGS) from core to surface processed by twisting have been reported to possess exceptional strength-ductility combinations. However, it is hard to apply this technique to sheet (plate) samples because of their lower axial symmetry. Here, we report a novel 3D-GGS produced in a 304 stainless steel (304ss) sheet using cyclic twisting. The 3D-GGS 304ss sheets exhibited much better strength-ductility combinations than GGS 304ss rods due to their more pronounced heterostructural effects. During the tensile testing, a unique transformation-induced plasticity (TRIP) effect was activated in which reverse martensitic transformation (α′ → γ) was first activated, then transited to forward martensitic transformation (γ → α′) after some strain. Both the reverse and forward TRIP effects contributed to higher ductility. In addition, the 3D-structures also produced hetero-deformation induced (HDI) work hardening to retain ductility. This work developed a practical approach to constructing 3D-GGS to enhance integrated performances of metal sheets and components without changing their geometries.
LB  - PUB:(DE-HGF)16
DO  - DOI:10.1016/j.msea.2025.148383
UR  - https://bib-pubdb1.desy.de/record/636203
ER  -