Journal Article10.1016/j.actamat.2023.118733
Gradient nanostructuring via compositional means
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TL;DR: In this article , annealing a compositionally stepwise Pt-Au film with a homogenous microstructure results in a film with spatial microstructural gradient, exhibiting grains which can be twice as wide in the bulk compared to the outer surfaces.
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About: This article is published in Acta Materialia. The article was published on 01 Apr 2023. The article focuses on the topics: Nanocrystalline material & Microstructure.
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Citations
Computational modeling of grain boundary segregation: A review
Chongze Hu,Rémi Dingreville,Brad L. Boyce +2 more
TL;DR: This review examines computational modeling techniques for understanding grain-boundary segregation in polycrystalline materials, leveraging advanced electron microscopy and theoretical methods to elucidate mechanisms and provide insights into controlling microstructure and associated properties.
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Research on multi-scale failure mechanism of gradient nanostructured 316L steel under strain-controlled fatigue at 650℃
Jianfeng Mao,Chi Cao,Jiadong Yang,Mengda Hua,Youquan Cai,Weigang Wang,Fengping Zhong +6 more
TL;DR: This study investigates the multi-scale failure mechanism of gradient nanostructured 316L steel under high-temperature strain-controlled fatigue at 650°C, revealing improved fatigue resistance and strength compared to coarse-grained steel, with a mixed crack propagation mode and subsurface crack source.
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Functionally graded magnetic materials: a perspective to advance charged particle optics through compositional engineering
Eric Lang,Zac Milne,J. Adamczyk,Erin J. Barrick,Robert E. Delaney,Samad Firdosy,N. Ury,R. P. Dillon,Todd C. Monson,Andrew B. Kustas,Katherine Jungjohann,Khalid Hattar +11 more
TL;DR: Functionally graded magnetic materials can be used to optimize charged particle optics performance by tailoring magnetic properties locally.
2
Surface nano-crystallisation and mechanical properties of Ti Ta composite materials after surface mechanical grinding treatment
Sheng-hang Xu,Kaijie Shen,Meng Han,Huibin Zhang,Junjie Lan,Junpin Lin,Huazhen Cao,Guoqu Zheng +7 more
TL;DR: Surface mechanical grinding treatment enhances mechanical properties of Ti-Ta composites for medical implants by forming gradient nano-structures, increasing micro-hardness (440 HV) and tensile strength (1097.528 MPa), and altering fracture mechanisms.
2
Atomistic and theoretical insights on nanoprecipitates-controlled strengthening behavior for optimum mechanical performance in nanotwinned NiCoCr alloys
Zihao Yu,Yujie Zhang,Hongyu Wang,Ligang Sun,Xiang Guo,Linli Zhu +5 more
TL;DR: Molecular dynamics simulations reveal that nano-precipitates in twin boundaries enhance mechanical performance in nanotwinned NiCoCr alloys, with precipitate-induced strengthening reaching maximum flow stress at optimal volume fractions and microstructural sizes.
References
The Deformation and Ageing of Mild Steel: III Discussion of Results
E O Hall
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Revealing Extraordinary Intrinsic Tensile Plasticity in Gradient Nano-Grained Copper
TL;DR: The extraordinary intrinsic plasticity of gradient NG structures offers their potential for use as advanced coatings of bulk materials in both high strength and ductility materials.
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The Impurity‐Drag Effect in Grain Boundary Motion
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Extraordinary strain hardening by gradient structure.
TL;DR: It is reported that the gradient structure in engineering materials such as metals renders a unique extra strain hardening, which leads to high ductility, which is a hitherto unknown strategy to develop strong and ductile materials by architecting heterogeneous nanostructures.
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