Breaking mixture rule of strength and ductility by interface induced nano-scale heterostructure in TA1/304 composites
Year: 2026
Type: article
Abstract: Laminate composites offer an effective strategy to overcome strength-ductility trade-off by harnessing the synergistic properties of constituent metals. In the TA1/304 steel composite, a unique nano-scale heterostructure, introduced through the homogeneous and heterogeneous interfaces, breaks the mixture rule of strength-ductility. The composites achieve a high yield strength of 1050 MPa, exceeding that of its individual components due to remarkable grain refinement strengthening. A large uniform elongation of 28%, stems from formation of α′-/ϵ-martensite, stacking faults and the hetero-deformation induced stress strengthening in 304 steel layer, coupled with the activation of unusual dislocations under high stress in TA1 layer.
Source: Materials Research Letters
Authors: Yuhui Li, Kai Yao, Zhixin Wang, Baoli He, Boyang Li, Chunguang Shen, Lingling Zhang, Shijian Zheng
Institution: Hebei University of Technology
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,459
Awards: G4560490693, G7605966873
OpenAlex ID: W7128036870