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Accurate reconstruction and prediction of T55511 titanium alloy microstructure using DDPM model and quantitative evaluation

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Progress in Natural Science: materials International 2025年

作者： Zhu, Yongcheng Du, Zhaoxin Gong, Tianhao Yue, Zhiyong Zhang, Shuzhi Cheng, Jun Kang, Xudong Zeng, Qiang Liu, Jingshun School of Materials Science and Engineering Inner Mongolia University of Technology Hohhot010051 China Collaborative Innovation Center of Non-ferrous Metal Materials and Processing Technology Co-constructed By the Provience and Ministry Inner Mongolia Autonomous Region Inner Mongolia University of Technology Hohhot010051 China Inner Mongolia Key Laboratory of New Materials and Surface Engineering Inner Mongolia University of Technology Hohhot010051 China School of Mechanical Engineering Inner Mongolia University of Technology Hohhot010051 China College of Mechanical Engineering Inner Mongolia University of Technology Hohhot010051 China State Key Laboratory of Metastable Materials Science and Technology Yanshan University Qinhuangdao066004 China Northwest Institute for Non-Ferrous Metal Research Shanxi Key Laboratory of Biomedical Metal Materials Xian710016 China

The exploration of the relationship between microstructure and properties is essential in materials research. However, traditional methods are often costly and time-consuming, and manual quantitative analysis is subject to high levels of subjectivity, which hinders accurate reflection of microstructural features. In this study, based on a multimodal database of the Solution-Treatment-Aging (STA) process for titanium alloys, we developed a deep learning model for microstructure-property relationships in T55511 alloy by employing a Denoising Diffusion Probabilistic Model (DDPM) with a conditional U-Net as the denoising network. The model generates high-fidelity microstructure images through progressive denoising and adaptively predicts the complex relationships between microstructure and properties based on processing conditions. Results demonstrate that the model produces images with high clarity and strong resemblance to real microstructures. Quantitative information obtained via semantic segmentation shows that the model achieves a mean absolute error (MAE) of ≤30 nm for primary phase (αp) and ≤20 nm for secondary phase (αs), closely matching real-world data. This study validates the reliability of the DDPM model in generating alloy microstructures and highlights its potential for broad applications, including other alloy systems, process optimization, and materials design. © 2025 Chinese materials Research Society

关键词： Microstructural evolution

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In-situ μCT 3D visualization on micropores of thin-walled casting using a novel 3rd-generation nickel-based single crystal superalloy under 1100 °C tensile loading

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Journal of Alloys and Compounds 2025年 1032卷

作者： Hanyuan Xu Taiwen Huang Pengfei Qu Chao Zhang Cheng Ai Jun Zhang Lin Liu Hengzhi Fu State Key Laboratory of Solidification Processing Northwestern Polytechnical University Xi'an 710072 China Xi’an Thermal Power Research Institute Co. Ltd. Xi’an 710054 China Engineering Research Center of Transportation Materials School of Materials Science and Engineering Chang'an University Xi'an 710064 China Suzhou HTA Materials Technology Co. Ltd. Suzhou 215558 China

With the advancement of aviation technology, thin-walled structures in superalloys are increasingly adopted in turbine blades for modern aeroengines. However, the mechanical reliability of ultra-thin sections remains a critical challenge. In this study, the high-temperature tensile behavior of thin-walled specimens of a third-generation nickel-based single-crystal superalloy was systematically investigated at 1100 °C. By integrating thin-wall design and in-situ micro-computed tomography imaging, real-time 3D visualization of dendritic structures and micropore evolution during tensile deformation was achieved. The results reveal that micropores progressively aggregate and expand throughout the initial, elastic, plastic and fracture stages. A 13.7 % reduction in tensile strength was observed as the wall thickness decreases from 1.2 mm to 0.3 mm. These findings provide critical insights for optimizing the design and performance of thin-walled turbine blades in advanced aero-engines operating under extreme service conditions.

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Corrigendum to “Statistical modelling of tensile properties of natural fiber yarns considering probability distributions of fiber crimping and effective yarn elastic modulus” [Compos. Sci. Technol. 218(2022) 109142]

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Composites Science and technology 2022年 222卷

作者： Jichong Wang Helezi Zhou Zhengkun Liu Xiongqi Peng Huamin Zhou School of Materials Science and Engineering Shanghai Jiao Tong University Shanghai 200030 China State Key Laboratory of Materials Processing and Die & Mold Technology School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan 430074 China

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High Performance Supercapacitors Based on Wood-Derived Thick Carbon Electrodes Synthesized Via Green Activation Process

SSRN

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SSRN 2022年

作者： Yan, Bing Feng, Li Zheng, Jiaojiao Zhang, Qian Jiang, Shaohua Zhang, Chunmei Ding, Yichun Han, Jingquan Chen, Wei He, Shuijian International Innovation Center for Forest Chemicals and Materials Co-Innovation Center of Efficient Processing Utilization of Forest Resources College of Materials Science and Engineering Nanjing Forestry University Nanjing210037 China College of Science Nanjing Forestry University Nanjing210037 China Institute of Materials Science and Devices School of Materials Science and Engineering Suzhou University of Science and Technology Suzhou215009 China Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou350010 China State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences Jilin Changchun130022 China University of Science and Technology of China Hefei230026 China

Electrical double-layer supercapacitors are one type of electrochemical energy devices promising for next-generation energy storage, while they still suffer from great challenges of inferior energy density and poor tolerance to harsh conditions toward practical applications. Herein, by designing a thick carbon electrode with an ultrahigh mass loading (~40 mg cm-2 ) from carbonization and activation of basswood, a supercapacitor is able to operating under harsh conditions such as fast charge/discharge rates (100 mA cm-2 ), ultralong cycle life (≥ 50,000 cycles), and ultralow temperature (-40 ℃) . The carbon electrode inherited the vertical channels of basswood, which enhances the penetration and mass transport of electrolyte ions;and it also possessed rational micro/meso-sized pores and oxygen-containing functional groups induced by H2O2 activation, which improves the ion transport kinetics of electrodes. In consequence, the assembled supercapacitors achieved appreciable capacitive performance even with commercial-level mass loadings and at ultralow temperatures, that delivered a specific capacitance of 6205.7 mF cm-2 (221.6 F g-1 and 77.6 F cm-3) and 4886.4 mF cm-2 (174.5 F g-1, 61.1 F cm-3) at ambient temperature and -40 ℃, respectively. In addition, the device presented an ultralong working lifetime in harsh environments, evidenced by a capacitance retention of 90.6% even after 70,000 cycles at -40 ℃. Benefiting from the renewable precursor, green activation process, and encouraging capacitive performances, the H2O2 -activated wood-derived carbon monoliths would be promising high mass-loading electrodes for developing supercapacitors working at ultralow temperatures. © 2022, The Authors. All rights reserved.

关键词： Chemical activation

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Design of A Novel Robot Finger with Changeable Surface for In-hand Manipulations of Co-fusion Robots

Design of A Novel Robot Finger with Changeable Surface for I...

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IEEE International Conference on Cyber technology in Automation, Control, and Intelligent Systems

作者： Yixin Wang Kui Hu Wenzeng Zhang State Key Laboratory of Tribology Key Laboratory for Advanced Materials Processing Technology (MOE) Tsinghua University Beijing China

ISBN: (数字)9781728107707

ISBN: (纸本)9781728107714

The design of the most of the traditional multi-fingered hands is the imitation of human hand. It causes that a large number of simple operations can be realized only by using the finger joints or wrist, which brings about complex control algorithm and the waste of time and energy. To solve this problem, this paper presents a novel design of robot finger with changeable surface for in-hand manipulation of co-fusion robots, called CS finger. Due to the special structure including pulley-belt mechanism and planetary gear mechanism, the surface of the CS finger can move in two directions and change the kind of the surface according to the environment, which makes many operations realized greatly easily and efficient like twisting the key to unlock and picking up soft cloth. Owing to its compact structure, low control requirements and high adaptability to the environment, the CS finger has important application prospects in the field of home services, micro-nano manufacturing and aeronautics and Astronautics, etc.

关键词： Thumb Skin Gears Force Robots Friction

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Switchable Parallel Grasping, Coupled and Self-adaptive Robot Hand with Idle-Stroke Transmission Mechanism

Switchable Parallel Grasping, Coupled and Self-adaptive Robo...

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IEEE International Conference on Robotics and Biomimetics

作者： Siyun Liu Wenzeng Zhang The State Key Laboratory of Tribology the Key Laboratory for Advanced Materials Processing Technology (MOE) Tsinghua University Beijing China

This paper proposes a switchable parallel grasping, coupled and self-adaptive robot hand with idle-stroke transmission mechanism (SPCS-IS hand) which integrates the three basic grasping modes, namely parallel grasping mode, coupled grasping mode and self-adaptive grasping mode. The idle-stoke transmission mechanism (IS mechanism) is adopted into the robot hand mechanism design, so as to introduce two stages for the robot hand grasping motion. The SPCS-IS hand uses a switching device to realize the transformation between parallel grasping and coupled grasping for the first stage of grasping motion, then it will perform the self-adaptive grasping mode for the second grasping stage under the action of spring and limit device. The whole device contains only one motor and uses gear train to complete power transmission. Due to the integration of multiple grasping modes, the SPCS hand has stronger function and wider application range, especially its self-adaptability makes it can achieve envelopment for objects with different size and shape. Kinematic analysis and dynamic analysis are performed to research the adaptability and grasping ability of SPCS hand.

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Deterministic reversal of single magnetic vortex circulation by an electric field

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Science Bulletin 2020年第15期65卷 1260-1267,M0003页

作者： Yuelin Zhang Chuanshou Wang Houbing Huang Jingdi Lu Renrong Liang Jian Liu Renci Peng Qintong Zhang Qinghua Zhang Jing Wang Lin Gu Xiu-Feng Han Long-Qing Chen Ramamoorthy Ramesh Ce-Wen Nan Jinxing Zhang Department of Physics Beijing Normal UniversityBeijing 100875China Advanced Research Institute of Multidisciplinary Science Beijing Institute of TechnologyBeijing 100081China Tsinghua National Laboratory for Information Science and Technology Institute of MicroelectronicsTsinghua UniversityBeijing 100084China Department of Materials Science and Engineering and Department of Physics University of CaliforniaBerkeley and Materials Science DivisionLawrence Berkeley National LaboratoryBerkeleyCA 94720USA State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China Beijing National Laboratory of Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China Department of Materials Science and Engineering The Pennsylvania State UniversityUniversity ParkPA 16802USA

The ability to control magnetic vortex is critical for their potential applications in spintronic *** methods including magnetic field,spin-polarized current *** been used to flip the core and/or reverse circulation of ***,it is challenging for deterministic electric-field control of the single magnetic vortex textures with time-reversal broken symmetry and no planar magnetic *** it is reported that a deterministic reversal of single magnetic vortex circulation can be driven back and forth by a space-varying strain in multiferroic heterostructures,which is controlled by using a bi-axial pulsed electric ***-field simulation reveals the mechanism of the emerging magnetoelastic energy with the space variation and visualizes the reversal pathway of the *** deterministic electric-field control of the single magnetic vortex textures demonstrates a new approach to integrate the low-dimensional spin texture into the magnetoelectric thin film devices with low energy consumption.

关键词： Deterministic reversal Electric-field control Space-varying strain Single magnetic vortex Multiferroic heterostructures

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Quasi-Industrial Preparation of SWCNTs-Confined High-Entropy Oxides as Self-Supported Electrodes for Continuous Electrosynthesis

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Angewandte Chemie 2025年

作者： Minxing Du Junyi Du Huili Fu Lin Geng Xiaoxuan Xie Chengxu Zhou Yunlei Zhong Yong Zhang Dan Tian Lixing Kang Key Laboratory of Multifunctional Nanomaterials and Smart Systems Division of Advanced Materials Suzhou Institute of Nano-Tech and Nano-Bionics Chinese Academy of Sciences Suzhou 215123 China School of New Energy Ningbo University of Technology Ningbo 315336 China College of Materials Science and Engineering Co-Innovation Center of Efficient Processing and Utilization of Forest Resources Nanjing Forestry University Nanjing 210037 China

High-entropy oxides (HEOs) are emerging as highly promising materials for electrochemical applications due to their exceptional electronic properties and active sites. However, the synthesis of 1D HEO with high aspect ratios and mechanical properties has been challenging, particularly on an industrial scale. Herein, we report a spatially confined oxidation (SCO) method to synthesize 1D HEO@SWCNTs with high specific surface area and stability. This method enables the large-scale production of HEO@SWCNTs, achieving quasi-industrially quantities in a single batch, and can be extended to seven-element 1D HEO. The resulting exhibit a homogeneous distribution of elements and a single-phase solid solution structure, as confirmed by STEM-EDS and XRD analysis. The Fermi level of SWCNTs is downshifted into the valence band upon HEO doping, enhancing conductivity and electrochemical activity. The HEO@SWCNTs electrode demonstrates superior flexibility and self-supported properties, making it suitable for large-scale electrochemical applications. Chronoamperometric measurements reveal excellent stability, maintaining 94% current retention after 20 h. Notably, in the electrochemical epoxidation reaction cycloolefin, the HEO@SWCNTs self-supported electrode achieves an average FE of 70.7% for epoxy-cyclohexane over 24 h. This work provides a scalable and versatile approach to the synthesis of self-supported electrodes for advanced electrochemical systems.

关键词： Electrosynthesis High-entropy oxide Large-scale synthesis, Self-supported electrodes SWCNTs

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Effects of scanning speed on microstructure in laser surface-melted single crystal superalloy and theoretical analysis

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Journal of materials Science & technology 2018年第8期34卷 1315-1324页

作者： Guowei Wang Jingjing Liang Yanhong Yang Yu Shi Yizhou Zhou Tao Jin Xiaofeng Sun Institute of Metal Research Chinese Academy of Sciences School of Materials Science and Engineering University of Science and Technology of China State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals Lanzhou University of Technology

Scanning speed is a critical parameter for laser process, which can play a key role in the microstruc- ture evolution of laser melting. In the laser melting of single crystal superalloy, the effects of scanning speed were investigated by experimental analysis and computational simulation. The laser was scanning along [710] direction on （001） surface in different speeds. Solidification microstructures of dendrites growth direction and the primary dendritic spacing were analyzed by metallograph. Besides, a planar interface during solidification was taken into attention, Experiment results indicated that the primary dendritic spacing and thickness of planar interface decrease with the increase of speed. Through simu- lation, distribution of dendrites growth velocity and thermal gradient along dendrite growth direction were calculated, and the simulation of dendrites growth direction agreed with the experiment results. Additionally, a constant value was acquired which can be used to predict the primary dendritic spacing. Moreover, according to curve-fitting method and inequality relation, a model was proposed to predict the thickness of planar interface.

关键词： Scanning speed Laser remelting Single crystal superalloy First dendrites spacing Planar interface

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Breakthrough in CO2Electroreduction to Multi-Carbon Products at Ampere-Level Enabled by Active Sites Engineering

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Angewandte Chemie 2024年第38期136卷

作者： Dr. Ying Sun Prof. Dr. Zhenghong Luo Prof. Dr. Jieshan Qiu Institute of Clean Energy Chemistry Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials of Liaoning Province College of Chemistry Liaoning University 110036 Shenyang China State Key Laboratory of Chemical Resource Engineering College of Chemical Engineering Beijing University of Chemical Technology 100029 Beijing China State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering College of Chemistry and Chemical Engineering Ningxia University 750021 Yinchuan China

Efficient production of value-added chemicals with high selectivity from CO 2 electroreduction at industrial-level current density is highly demanded, yet remains a big challenge. In a recent issue of Angewandte Chemie, Han and colleagues have elegantly increased the Faradaic efficiency (FE) of multi-carbon (C 2+ ) products to over 70 % at amperes level (1.4 A cm −2 ) by engineering the active sites for the key reactions involved in the CO 2 electroreduction. In this study, the highly dispersed Pd atoms have two unique functions: active sites for water dissociation and to induce the electron rearrangement of the surrounding Cu atoms to form new active sites for CO conversion, while the Cu far from Pd are the active sites for efficient CO 2 conversion to CO, the synergistic functions of these three active sites result in high FE and yields of C 2+ products at industrial-level current density. This research is a remarkable step forward in the methodology for developing efficient and durable catalysts for CO 2 electroreduction and beyond.

关键词： Carbon dioxide C2+ products Electroreduction Multi-sites catalyst Design and fabrication

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