Li Yue

Max Planck Institute for Sustainable Materials | MPIE · Department of Microstructure Physics and Alloy Design

Chemical short-range order (CSRO) refers to atoms of specific elements self-organising within a disordered crystalline matrix to form particular atomic neighbourhoods. CSRO is typically characterized indirectly, using volume-averaged or through projection microscopy techniques that fail to capture the three-dimensional atomistic architectures. Here...

Local chemical ordering (LCO) can exert pronounced effects on both structural and functional properties, tailoring LCO domains at (sub-)nanoscale could offer an alternative material-design concept for yet unexplored performance. However, the origin of LCO remains an open question, making accurate manipulation of LCO extremely challenging. Here we s...

Quantitative analysis of microstructural features on the nanoscale, including precipitates, local chemical orderings (LCOs) or structural defects (e.g. stacking faults) plays a pivotal role in understanding the mechanical and physical responses of engineering materials. Atom probe tomography (APT), known for its exceptional combination of chemical...

In solids, chemical short‐range order (CSRO) refers to the self‐organization of atoms of certain species occupying specific crystal sites. CSRO is increasingly being envisaged as a lever to tailor the mechanical and functional properties of materials. Yet quantitative relationships between properties and the morphology, number density, and atomic c...

Machine Learning-Enhanced Atomic Ordering Tomography In article number 2407564, Yue Li, Yilun Gong, Zhangwei Wang, Baptiste Gault, and co-workers introduce a machine learning-enhanced atom probe tomography technique that surpasses existing technological limitations. This method provides a comprehensive 3D view for investigating chemical short-rang...

The oxygen reduction reaction (ORR) is a critical process that limits the efficiency of fuel cells and metal‐air batteries due to its slow kinetics, even when catalyzed by platinum (Pt). To reduce Pt usage, enhancing both the specific activity and electrochemically active surface area (ECSA) of Pt catalysts is essential. Here, ultrafine, grain boun...

Science is and always has been based on data, but the terms 'data-centric' and the '4th paradigm' of materials research indicate a radical change in how information is retrieved, handled and research is performed. It signifies a trans-formative shift towards managing vast data collections, digital repositories, and innovative data analytics methods...

As deformation twins have a profound impact on the plastic flow and mechanical properties of metallic materials, enhancing deformation twinning in face-centered cubic (FCC) metallic materials has long served as a unique microstructure design strategy to attain an extraordinary strength-ductility synergy. Deformation twinning, however, rarely occurs...

Science is and always has been based on data, but the terms ‘data-centric’ and the ‘4th paradigm of’ materials research indicate a radical change in how information is retrieved, handled and research is performed. It signifies a transformative shift towards managing vast data collections, digital repositories, and innovative data analytics methods....

Quantitative analysis of microstructural features on the nanoscale, including precipitates, local chemical orderings (LCOs) or structural defects (e.g. stacking faults) plays a pivotal role in understanding the mechanical and physical responses of engineering materials. Atom probe tomography (APT), known for its exceptional combination of chemical...

Science is and always has been based on data, but the terms ‘data-centric’ and the ‘4th paradigm’ of materials research indicate a radical change in how information is retrieved, handled and research is performed. It signifies a transformative shift towards managing vast data collections, digital repositories, and innovative data analytics methods....

Science is and always has been based on data, but the terms ‘data-centric’ and the ‘4th paradigm’ of materials research indicate a radical change in how information is retrieved, handled and research is performed. It signifies a transformative shift towards managing vast data collections, digital repositories, and innovative data analytics methods....

Science is and always has been based on data, but the terms ‘data-centric’ and the ‘4th paradigm’ of materials research indicate a radical change in how information is retrieved, handled and research is performed. It signifies a transformative shift towards managing vast data collections, digital repositories, and innovative data analytics methods....

This article collection on Artificial Intelligence for Metallic Materials aims to focus on the latest research relevant to solving challenges in metallic materials via AI. It comprises advanced structural or functional materials design, complex experimental and simulated data analysis, high-throughput experiments and calculations, text/reference da...

Architected materials that consist of multiple subelements arranged in particular orders can demonstrate a much broader range of properties than their constituent materials. However, the rational design of these materials generally relies on experts’ prior knowledge and requires painstaking effort. Here, we present a data-efficient method for the h...

Computational methods and machine learning algorithms for automatic information extraction are crucial to enable data-driven materials science. These approaches are changing materials characterization and analytics, which often require a user-specified threshold to e.g. detect structure or symmetries in structures with defects. Here, we present a m...

The mechanical properties of metallic materials often significantly deteriorate when used under harsh conditions, particularly at cryogenic temperatures. Yet, safe and lasting low-temperature infrastructures are needed to realize the growing global demand for liquid energy carriers such as hydrogen[1]. Traditional microstructure strategies designed...

Dissolvable functional magnesium alloys are attracting strong attention due to the prominent advantages of high strength and suitable dissolution rate. Here, the effect of Cu micro-alloying (0, 0.4, 0.8 wt%) on the microstructure, mechanical and corrosion properties of Mg-9.5Gd-2.7Y-0.9Zn alloys are investigated. With the increase of Cu contents, t...

In solids, chemical short-range order (CSRO) refers to the self-organisation of atoms of certain species occupying specific crystal sites. CSRO is increasingly being envisaged as a lever to tailor the mechanical and functional properties of materials. Yet quantitative relationships between properties and the morphology, number density, and atomic c...

Aluminum-rich metallic materials, as some of the most important structural and functional materials, are widely used in transportation, construction, aerospace, and aircra and etc. Scientists have never stopped searching for superior Al-based alloys by adjusting/tuning their compositions, imperfections and structures from the macro-to the micro-sca...

The precipitation hardening is widely applied to strengthen Al alloys. Here, we report an alternative way to achieve high-strength Al alloys via forming the dislocation gradient through pre-torsion. Remarkably, the gradient Al alloys exhibit a sharp increase in ultimate tensile strength up to 605 MPa yet nearly without reducing the uniform elongati...

Architected materials that consist of multiple sub-elements arranged in particular orders can demonstrate a much broader range of properties than their constituent materials. However, the rational design of these materials generally relies on experts' prior knowledge and requires painstaking effort. Here, we present a data-efficient method for the...

Twins and 9R phase (a structure containing a high density of stacking faults) have played important roles in simultaneously improving strength and strain hardening capacity of low-to-medium stacking fault energy (SFE, smaller than 50 mJ/m²) metallic materials. Due to the high SFE (166 mJ/m²) in pure face-centered-cubic Al and its insensitivity to m...

Al-Mg based alloys are known to experience dynamic strain aging (DSA) at room temperature, which is often associated with the diffusion of mobile Mg atoms to dislocation segments temporarily arrested at obstacles (e.g., forest dislocations) upon deformation in the DSA regime. With the emergence of new promising high Mg-content (> 6 wt.%) Al-Mg allo...

Al-Mg-Zn-(Cu) crossover alloys, embracing the advantages of traditional 5xxx and 7xxx series aluminum alloys, are being designed to achieve a better trade-off between ductility and achievable strength. In this study, we achieve an excellent strength-ductility combination in a high Cu-concentration Al-4.0Mg-3.0Zn-1.5Cu (wt.%) crossover alloy. The ef...

In this study, we combine dynamic strain aging and dynamic precipitation by simple pre-deformation instead of usual artificial aging in a high Mg-content Al–Mg–Zn based crossover alloy. With this strategy, both the dislocations and shearable precipitates are manipulated to concurrently increase the flow stress and strain hardening rate, equipping t...

Inferior absolute strength and dissolution properties are the main bottlenecks for the widespread application of dissolvable magnesium alloys in complex working environments for unconventional oil and gas resources. Here, a novel functional peak-aged Mg-9.5Gd-2.7Y-0.9Zn-0.8Cu-0.4Ni (wt.%) alloy for fracturing tools is reported, and it possesses an...

Chemical short-range order (CSRO) refers to atoms of specific elements self-organising within a disordered crystalline matrix. These particular atomic neighbourhoods can modify the mechanical and functional performances of materials 1-6. CSRO is typically characterized indirectly, using volume-averaged (e.g. X-ray/neutron scattering) 2,7,8 or throu...

Atom probe tomography (APT) is often introduced as providing “atomic-scale” mapping of the composition of materials and as such is often exploited to analyze atomic neighborhoods within a material. Yet quantifying the actual spatial performance of the technique in a general case remains challenging, as it depends on the material system being invest...

Currently, there is a tendency towards breaking through conventional 5000 series aluminum alloys framework and designing heat-treatable Al-Mg based alloys with the improved mechanical properties. Here, based on a small amount of experimental work and our previously developed Integrated Computational Materials Engineering (ICME) framework, the autho...

In this work, the dynamic response at a similar high strain rate of a series of Mo-doped CoCrNi medium entropy alloys, i.e., CoCrNiMox (x = 0, 0.1, 0.2), was investigated via a split Hopkinson pressure bar (SHPB). We found that with the Mo amount increasing from 0 to 0.2, the yield strength nearly doubles, from ∼450 to ∼800 MPa, under such a high s...

The effects of grain size on the deformation behavior in a metastable Fe40Co20Cr20Mn10Ni10 high-entropy alloy (HEA) were investigated. The dislocation substructures with two different grain sizes of 12 μm (FG) and 41 μm (CG) upon straining were revealed, of which the strong grain size dependent of martensite phase transformation was observed. The H...

Hot tearing is one of the most severe and irreversible casting defects for many metallic materials. In 2004, Eskin et al. published a review paper in which the development of hot tearing of aluminium alloys was evaluated (Prog. Mater. Sci. 2004; 49: 629-711). Sixteen years have passed and this domain has undergone considerable development. Neverthe...

Free full-paper access until 2021/05/04: Pro. Mater. Sci. Recent advances in hot tearing during casting of aluminium alloys

Atom probe tomography is often introduced as providing "atomic-scale" mapping of the composition of materials and as such is often exploited to analyse atomic neighbourhoods within a material. Yet quantifying the actual spatial performance of the technique in a general case remains challenging, as they depend on the material system being investigat...

The coupling of computational thermodynamics and kinetics has been the central research theme in Integrated Computational Material Engineering (ICME). Two major bottlenecks in implementing this coupling and performing efficient ICME-guided high-throughput multi-component industrial alloys discovery or process parameters optimization, are slow respo...

Nanoscale L12-type ordered structures are widely used in face-centred cubic (FCC) alloys to exploit their hardening capacity and thereby improve mechanical properties. These fine-scale particles are typically fully coherent with matrix with the same atomic configuration disregarding chemical species, which makes them challenging to be characterized...

Nanoscale L12-type ordered structures are widely used in face-centered cubic (FCC) alloys to exploit their hardening capacity and thereby improve mechanical properties. These fine-scale particles are typically fully coherent with matrix with the same atomic configuration disregarding chemical species, which makes them challenging to be characterize...

New 7xxx aluminum alloys with high alloying contents are being designed, which could induce serious hot tearing defects during direct-chill (DC) casting. Among all factors affecting hot tearing of 7xxx alloys, undoubtedly alloying elements play a significant role. In this study, the effect of main alloying elements (Zn, Mg, and Cu) on hot tearing o...

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For an ICME (Integrated Computational Material Engineering) modeling framework used for the age-hardening aluminum alloy design and heat treatment parameters optimization, it is critical to take into account the geometric shape of precipitates, as it is tightly related to the precipitation kinetics and particles' hardening effect. The aim of this p...

The effect of Zn addition on the hot tearing susceptibilities of non-refined Al-xZn-2Mg-2Cu (x = 2-12 wt pct) alloys was investigated via direct crack observations and load response measurements. The obtained experimental results were compared with the predictions made using a modified Rappaz–Drezet–Gremaud (RDG) hot tearing model. Both the minimum...

Cold cracking is a severe challenge during the direct-chill casting of high-strength 7××× series aluminum alloys. A finite element method (FEM) simulation combined with a cold cracking criterion has been demonstrated to possess obvious technical advantages in cold cracking prediction. However, the current absence of mechanical properties and effect...

During the production of high-strength 7××× aluminum alloys, hot tearing has set up serious obstacles for attaining a sound billet/slab. In this research, some typical 7××× alloys were studied using constrained rod casting together with the measurement of thermal contraction and load development in the freezing range, aiming at investigating their...

The influences of grain size and morphology on the hot tearing susceptibility of AA7050 alloy inoculated with Al-5Ti-1B master alloy were investigated by the authors. It was found that with the optimal addition of Al-5Ti-1B, coarse columnar grains were transformed into fine globular equiaxed grains. Moreover, due to the changes of grain size and mo...

The hot tearing susceptibilities (HTS) of some AA7×××alloys, AA7050, AA7055, AA7085 and AA7022 were evaluated with constrained rod casting (CRC). Thermal contraction behaviors during solidification were measured as well in a T-shaped setup. The results showed that alloys with HTS from high to low were AA7055, AA7085, AA7050 and AA7022. Zn content i...

Objectives Over 50% of ST-segment elevation myocardial infarction (STEMI) patients have multivessel disease, which is known to be associated with worse prognosis. The best percutaneous coronary intervention (PCI) strategy for those patients has been controversial for a few years. Recently, increasing evidence has suggested that only the infarc-rela...

Purpose The protective effects of statins against atrial fibrillation (AF) have been observed in many clinical trials but the underlying mechanisms remain unclear. Therefore we investigated the role of atorvastatin on atrial remodelling in AF dogs and explored the potential mechanism. Methods Three groups of dogs were used: sham-operated, AF and a...

Purpose Growing evidence suggested long-term abuse of ketamine did harm to the heart and increased the risk of sudden death. The present study was performed to explore the cardiotoxicity of ketamine and the protective effects of metoprolol. Methods Rats and rabbits were divided into control, ketamine poisoning and ketamine plus metoprolol groups....

Objective In-stent restenosis (ISR) remains a major problem even in the drug-eluting stent (DES) era, and the mechanism of ISR was neointimal growth. MicroRNAs (miRNAs) regulate the formation of pathologic vascular neointimal lesion. Therefore we investigated the levels of plasma miRNAs that specifically implicated in vascular smooth muscle cell ph...

Purpose The clinical progression of chronic heart failure (CHF) is largely determined by ventricular remodelling, which involves cellular and extracellular matrix disruption. A disintegrin and metalloproteinase with thrombospondin motifs-1 (ADAMTS-1) is known to regulate cell-cell and cell-matrix interactions, and may thereby influence cardiac stru...

Purpose Chronic excessive consumption of alcohol causes ventricular remodelling and eventually leads to alcoholic cardiomyopahty (ACM). Tumour necrosis factor-α converting enzyme (TACE) has been identified to cleave membrane-bound tumour necrosis factor-α (TNF-α) to soluble TNF-α, which has crucial roles in ventricular remodelling. This study aimed...