Results 1 to 10 of about 279 (115)

Perspective on hetero-deformation induced (HDI) hardening and back stress

Materials Research Letters, 2019
Heterostructured materials have been reported as a new class of materials with superior mechanical properties, which was attributed to the development of back stress.
Xiaolei Wu, Y T Zhu
exaly   +2 more sources

Strain hardening behavior and microstructure evolution of gradient-structured Cu-Al alloys with low stack fault energy

Journal of Materials Research and Technology, 2022
Nanocrystallization can significantly improve the strength and hardness of metallic materials, but usually sacrifice ductility due to low work hardening capability. Heterostructured materials are an emerging class of materials with superior performances,
Hao Zhou, Y T Zhu, Mengning Xu
exaly   +3 more sources

Revealing Hetero-Deformation Induced (HDI) Hardening and Dislocation Activity in a Dual-Heterostructure Magnesium Matrix Composite

Journal of Magnesium and Alloys
Integrating a heterogeneous structure can significantly enhance the strength-ductility synergy of composites. However, the relationship between hetero-deformation induced (HDI) strain hardening and dislocation activity caused by heterogeneous structures ...
Gaofeng Quan, Dongdi Yin, Peng Xiao
exaly   +3 more sources

Extraordinary tensile properties of titanium alloy with heterogeneous phase-distribution based on hetero-deformation induced hardening

Materials Research Letters, 2020
A heterogeneous (α + β) titanium alloy with extraordinary tensile properties was prepared. The heterogeneous microstructures, consisting of soft βfiber and hard (α + β)matrix, were achieved by controlling the distribution of β-stabilizing element.
Min Song, Weidong Zhang, Yuankui Cao
exaly   +2 more sources

Deformation incompatibility enables hetero-deformation induced strengthening in Ti/Nb laminates

Materials Research Letters, 2023
Deformation incompatibility in Ti/Nb laminates under uniaxial tension was revealed by in-situ neutron diffraction. During uniform deformation of the bulk laminates, the hard Nb constrained by the soft Ti showed moderate work hardening and only slightly ...
S. Jiang, R. Lin Peng, X. Zhao, L. Zuo, N. Jia   +4 more
doaj   +1 more source

Investigation on strain localization and hardening of dual-phase steel by hetero-deformation induced stress

Journal of Materials Research and Technology, 2023
Strain hardening remains challenging for maintaining the plasticity of metals, especially those of high strength. The hetero-deformation induced (HDI) stress can effectively alleviate the problem, specifically with a large mechanical response mismatch ...
Zhen Zhang, Nan Wang, Jing Li, Yongnan Chen, Gang Wu, Xi Chen, Qinyang Zhao, Jinheng Luo   +7 more
doaj   +1 more source

Dislocation array reflection enhances strain hardening of a dual-phase heterostructured high-entropy alloy

Materials Research Letters, 2023
Piling-ups of geometrically necessary dislocation (GND) arrays against interfaces are known to produce hetero-deformation induced (HDI) strengthening and strain hardening to enhance the strength and ductility of heterostructured materials. Here we report
Yi Liu, Mengning Xu, Lirong Xiao, Xuefei Chen, Zhaohua Hu, Bo Gao, Ningning Liang, Yuntian Zhu, Yang Cao, Hao Zhou   +9 more
doaj   +1 more source

γ′′ Phase transformation, precipitation hardening, hetero-deformation induced hardening and deformation mechanisms in a Nb-alloyed medium-entropy alloy

Materials & Design, 2023
In present work, a novel γ′′-strengthened Nb-alloyed medium-entropy alloy (MEA) was successfully fabricated and systematically investigated. Our results evidence that the γ′′ phase brings out significant precipitation hardening effect (∼10.2 %volume ...
Wenjie Lu, Xian Luo, Yafeng Wang, Bin Huang, Zhijun Wang, Yanqing Yang   +5 more
doaj   +1 more source

Microstructure and deformation behavior of a novel steel rebar: Effect of the heterogeneous microstructure of soft ferrite and Hard bainite

Journal of Materials Research and Technology, 2020
This study reports a detailed investigation of the deformation behavior and microstructural evolution of a novel ultra-low carbon Cr-Mo alloyed dual-phase steel rebar aimed for marine applications.
Dan Song, Guowei Wang, Falin Yang, Huande Chen, Ningning Liang, Han Ma, Jinghua Jiang, Xiaolong Ma   +7 more
doaj   +1 more source

Enhanced strength and ductility of the low-carbon steel with heterogeneous lamellar dual-phase structure produced by cyclic intercritical rolling

Journal of Materials Research and Technology, 2023
Steels with outstanding mechanical properties are desired in industrial applications. Martensitic structure significantly increases the strength in low-carbon steels, but usually sacrifices their ductility. In order to improve the combination of strength
Bo Gao, Li Wang, Yi Liu, Junliang Liu, Lirong Xiao, Yudong Sui, Wenwen Sun, Xuefei Chen, Hao Zhou   +8 more
doaj   +1 more source