Results 61 to 70 of about 479,775 (285)

Enhanced Mechanical Properties Via Boron‐Induced Multi‐Mechanism Strengthening in (NbTaTi1.5V)100‐xBx Refractory High Entropy Alloys

Advanced Science, EarlyView.
A trace amount of boron is introduced into NbTaTi1.5V RHEA, forming a finegrained BCC+TiO+TiB microstructure. The TiB phase generates numerous dislocations, strengthening the alloy. The alloy exhibits 3610 MPa compressive fracture strength and 1060 HV microhardness, while retaining 14.8% fracture strain.
Da Wu, Bo Li, Yuzhi Shi, Cong Li, Eryong Liu, Xiaohu Hou, Yimin Gao, Tao Wu, Pucun Bai, Chenyu Liang   +9 more
wiley   +1 more source

Large Language Model‐Informed Dual‐Track AI Framework for the Synergistic Design of Crack‐Free and High‐Strength Superalloys

Advanced Science
Laser Powder Bed Fusion of high performance nickel‐based superalloys is a transformative technology hindered by acute hot‐cracking susceptibility and prohibitively expensive process optimization cycles. Traditional data‐driven AI models often suffer from
Jian Yao, Junkang Wu, Jie Su, Fuzhu Wang, Zi Wang, Li Wang, Liming Tan, Lan Huang, Feng Liu, Yong Liu   +9 more
doaj   +1 more source

Curvature‐Controlled Field Effect Enables Thermal Localization for Low‐Temperature C─F Bond Activation

Advanced Science, EarlyView.
High‐curvature γ‐Al2O3 nanoneedles concentrate heat into nanoscale hotspots under identical external heating, amplifying local temperature and accelerating CF4 decomposition. By linking curvature‐induced thermal localization to lower apparent activation barriers and enhanced intermediate formation, this work reveals geometry as a powerful design ...
Hang Zhang, Jialin Zheng, Xiaojian Wang, Hao Yu, Diya Xie, Wenjie Luo, Minghui Yang, Kang Liu, Yuxia Duan, Zhang Lin, Liyuan Chai, Emiliano Cortés, Min Liu   +12 more
wiley   +1 more source

Sepiolite: A new component suitable for 380 ​km/h high-speed rail brake pads

Advanced Powder Materials
To enhance the high-temperature adaptability of copper-based composite materials and C–C/SiC discs, this article innovatively introduces a method of replacing graphite with sepiolite, resulting in the successful fabrication of samples with exceptional ...
Jiaqi Wu, Zhuan Li, Guoyuan Wen, Zonglong Gao, Ye Li, Yang Li, Peng Xiao   +6 more
doaj   +1 more source

Chemically Gradient Ordered Nanodomains Enable Large Tensile Ductility in Gigapascal Lightweight Refractory High‐Entropy Alloys

Advanced Science, EarlyView.
A high‐strength lightweight refractory high‐entropy alloy achieves extraordinary ductility owing to the introduction of coherent chemically gradient ordered nanodomains (CGONs). The CGONs not only serve as effective barriers to dislocation motion (strengthening) but also significantly promote dislocation nucleation and multiplication (ductilizing) upon
Wei Zhang, Dingshun Yan, Yong Zhang, Zhiming Li   +3 more
wiley   +1 more source

Visualizing dual-sites synergistic catalysis in non-iridium catalysts for acidic oxygen evolution reaction

Nature Communications
Understanding electron transfer at the solid/liquid electrochemical interface is critical for deciphering synergistic catalysis, yet elucidating how metal dopants mediate charge transfer between adjacent active centers remains challenging.
Meihuan Liu, Qianqian Xu, Peiqiong Zhou, Jianling Liu, Yan Zhang   +4 more
doaj   +1 more source

High temperature oxidation behavior of TiC ceramics by hot-pressed sintering

Cailiao gongcheng
The long-term oxidation resistance of TiC ceramics is a key parameter for their application in aerospace industries and must be carefully evaluated at high temperatures and various airflow environments.
XIE Fengminyu, YIN Jian, XIONG Xiang, WANG Shuai, TANG Lei, ZHANG Hongbo   +5 more
doaj   +1 more source

A REVIEW OF COMPUTER SIMULATIONS IN POWDER INJECTION MOLDING

, 2019
The powder injection molding (PIM) process is complicated since it is a hybrid technology embracing plastic injection molding, powder metallurgy (PM), and ceramic processing. In developing this technology, engineers have relied heavily on trial-and-error
German, RM, Kwon, YS, Chung, SH, Kim, SG, Kim, S, Atre, SV, Lee, S, Park, SJ, Ahn, S, Kang, TG, Chung, ST   +10 more
core  

A Closed‐Loop Framework for Inverse Design: Dynamic Training and Intelligent Optimization for Heterostructured Materials

Advanced Science, EarlyView.
To accelerate the inverse design of heterostructured metal matrix composites, a closed‐loop scientific machine learning framework integrates continual learning prediction with NSGA‐II‐PMCP optimization. The framework maps microstructural descriptors to strength, toughness, and modulus, expands high‐quality Pareto solutions, and guides experimentally ...
Zhiyan Zhong, Xueru Zheng, Xiao Zhou, Zhengheng Tao, Wan Han, Jingyi Pan, Dian Wu, Ning Gao, Lei Liu, Zhongyang Wang, Fanchao Meng, Tongxiang Fan   +11 more
wiley   +1 more source

Effect of reaction sintering modes on the structure and properties of carbide ceramics

Весці Нацыянальнай акадэміі навук Беларусі: Серыя фізіка-тэхнічных навук, 2019
Experimental studies of the structure, phase composition, physical and mechanical properties of the reaction-sintered ceramics based on silicon carbide and boron obtained by reaction sintering have been performed. It has been shown that the properties of
E. V. Zvonarev, A. Ph. Ilyushchanka, Zh. A. Vitko, V. A. Osipov, D. V. Babura   +4 more
doaj   +1 more source