Results 91 to 100 of about 5,766 (227)

Crystallization of Supercooled Liquid Elements Induced by Superclusters Containing Magic Atom Numbers

Metals, 2014
A few experiments have detected icosahedral superclusters in undercooled liquids. These superclusters survive above the crystal melting temperature Tm because all their surface atoms have the same fusion heat as their core atoms, and are melted by liquid
Robert F. Tournier
doaj   +1 more source

Ni‐Induced Interface Refinement Enhances Strength‐Ductility Synergy in LPBF‐Processed Ti‐Mo‐Ni Alloy

Rare Metals, Volume 45, Issue 9, September 2026.
ABSTRACT Microstructural refinement is a common strategy for strengthening additively manufactured titanium alloys because it promotes phase nucleation. Reducing the α/β interfacial formation energy is an effective way to increase the nucleation rate.
An Li, Qi Wang, Ying Gao, Xin Ding, Yanqing Su, Hengzhi Fu, Ruirun Chen   +6 more
wiley   +1 more source

Undercooling and Solidification.

, 1990
Undercooling investigations on liquids are of fundamental interest in studying solidification phenomena and their consequences on microstructure development. Experimental techniques to achieve a deep undercooling at slow cooling rates are reviewed. The
Willnecker, R., Herlach, D. M., Herlach, D.M.   +2 more
core  

In Situ Rare Earth Nanoparticle Reinforcement of NiCoCrAlYTa Coatings via HCPEB Modification: Insights Into Early Oxidation Behavior and Microstructural Evolution

Rare Metals, Volume 45, Issue 9, September 2026.
ABSTRACT NiCoCrAlYTa coatings are widely used as bond coats in thermal barrier coating (TBC) systems for gas turbines and aeroengines to provide oxidation resistance and support the formation of a protective thermally grown oxide (TGO). Herein, high‐current pulsed electron beam (HCPEB) modification was utilized to strengthen a NiCoCrAlYTa coating by ...
Xiangcheng Li, Wei Qian, Xiaofeng Zhang, Bin Gan, Xiang Xu, Jie Cai, Jinzhong Lu   +6 more
wiley   +1 more source

Microstructure Evolution of Melt-grown Al₂O₃/ZrO₂/YAG Eutectic Ceramic by High Temperature Fused Method

Cailiao gongcheng, 2017
As ultra-high-temperature structural materials, the mechanical properties of eutectic oxide ceramics are closely related with microstructure characteristics. Melt-grown Al2O3/ZrO2/YAG eutectic ceramic was prepared by high temperature fused method. Effect
FU Xue-song, SUN Wei-tao, HAN Wen-bo, LI Kang, CHEN Guo-qing, ZHOU Wen-long   +5 more
doaj   +1 more source

Modulating Hierarchical Microstructure to Enhance Strength–Ductility Synergy in an Additively Manufactured Zinc‐Magnesium Alloy via Static Magnetic Field

Rare Metals, Volume 45, Issue 9, September 2026.
ABSTRACT Additive manufacturing of zinc‐magnesium (Zn‐Mg) alloys via laser powder bed fusion (LPBF) has gained significant recognition as a promising candidate for bone repair. However, the presence of coarse yet brittle eutectic phases in the fabricated Zn‐Mg alloys tends to induce premature stress concentration and resultant fracture during ...
Zhi Dong, Changjun Han, Hongtao Du, Heng Li, Kewei Zhou, Wei Xu, Qinglin Li, Cheng Chen, Di Wang, Changhui Song, Yongqiang Yang   +10 more
wiley   +1 more source

Time‐Efficient Columnar‐to‐Equiaxed Transition via High Magnetic Field Processing

Rare Metals, Volume 45, Issue 9, September 2026.
ABSTRACT The need to simplify processing routes and improve processing efficiency motivates the development of time‐efficient methods for inducing the columnar‐to‐equiaxed transition (CET) during solidification while tailoring material performance. Conventional multistep CET approaches are time‐consuming and often struggle to simultaneously regulate ...
Chendong Zhao, Jun Wang, Yujie Yan, Dou Li, Bijun Tang, Ruihuan Duan, Qingfeng Wu, Zhijun Wang, Tie Liu, Qiang Wang, William Yi Wang, Jinshan Li, Zheng Liu   +12 more
wiley   +1 more source

Laser‐Directed Energy Deposition of Ti2AlNb Alloy: As‐Deposited Ultrahigh Strength and Heat‐Treated Strength–Ductility Balance

Rare Metals, Volume 45, Issue 9, September 2026.
ABSTRACT An ultra‐high as‐deposited tensile strength of 1408 MPa—the highest reported value for laser‐directed energy deposition (L‐DED) fabricated Ti2AlNb alloy—is achieved in this study. The as‐deposited microstructure consists of coarse B2 grains with a high density of fine acicular O phase precipitates within the grains, along with a brittle α2 ...
Ximiao He, Shubo Gao, Hui Xue, Yi Song, Zheng Guo, Jiaqi Ma, Yongfeng Liang, Junpin Lin   +7 more
wiley   +1 more source

Effect of steady magnetic field on undercooling of Al-Cu alloy melts

, 2019
The undercooling behaviors of three Al-Cu alloy melts in a steady magnetic field (SMF) were investigated by differential thermal analysis. It was found that the nucleation temperatures of primary phases in three alloys gradually shifted to a lower ...
Zhongming Ren, Jiang Wang, Xi Li, Shengya He, Yunbo Zhong, Rui Guo, Chuanjun Li, Weidong Xuan   +7 more
core   +1 more source

Block and Bomb Field of the 1888–1890 CE Eruption at La Fossa Cone (Vulcano, Aeolian Islands): Constraints on Conduit Stratigraphy and Eruptive Dynamics

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 9, September 2026.
Abstract Vulcanian eruptions are classically associated with the launch of ballistic ejecta and particularly with the production of breadcrust bombs. Morpho‐textural analysis of these ejecta provides critical insight into the poorly constrained processes controlling the complex dynamics of Vulcanian activity.
P. Gabellini, R. Cioni, M. Pistolesi, P. Donato, R. De Rosa   +4 more
wiley   +1 more source