Article
Materials Science, Multidisciplinary
Y. F. An, X. P. Chen, L. Mei, P. Ren, D. Wei, W. Q. Cao
Summary: This study systematically investigates the precipitation sequence of Fe-28Mn-11Al-1C-5Ni austenitic low-density steel and its influence on mechanical properties. The results reveal the transformation pathway of kappa' -carbides and B2 particles under different aging conditions. This research is meaningful for guiding the design of new generation dual-nano precipitation austenitic lightweight steel.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)
Article
Materials Science, Multidisciplinary
Meiya Wang, Ping Wang, Xuefei Wang, Feng Chen, Huogen Yu
Summary: In addition to electron transfer, the H-adsorption affinity of active centers on the metal cocatalyst surface is crucial for high hydrogen production activity. A strategy of self-optimized H-adsorption affinity in CuRu alloy cocatalyst is developed in this work, resulting in excellent photocatalytic activity for hydrogen evolution.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)
Article
Materials Science, Multidisciplinary
Chang Liu, Jianxiong Liang, Changjun Wang, Gang Chen, Xuanhui Qu, Yu Liu, Zhenbao Liu, Mengxing Zhang
Summary: In this study, PH13-8Mo stainless steel parts doped with cerium were fabricated and compared with undoped parts. The doping of cerium improved the microstructure, phase constituents, and tensile properties of the stainless steel. The results showed that doping with cerium enhanced the mechanical stability of austenite, improved the sphericity of oxide inclusion, and increased the ultimate tensile strength and fracture elongation of the PH13-8Mo parts. The improved strength and ductility were attributed to the strengthening effects of nanoscale precipitation and grain refining, as well as the enhanced inclusion sphericity and coherency between the inclusion and matrix.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)
Article
Materials Science, Multidisciplinary
C. Xu, X. H. Shao, H. J. Yang, M. Lv, H. Q. Liu, X. L. Ma
Summary: Using high-resolution TKD and TEM techniques, this study investigated the in-situ formed ghost structures in the heat-affected zone (HAZ) of bimodal titanium alloy. The ghost structures were found to be enriched with Al but poor in Mo and Cr compared to the surrounding β matrix. It was observed that the ghost structure mainly consisted of αL laths and formed through incomplete martensitic transformation.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)
Article
Materials Science, Multidisciplinary
Fan Zhang, Weidong Zeng, Penghui Zhang, Haoyuan Ma, Jianwei Xu
Summary: Multi-scale lamellar structure significantly improves the toughness of Ti2AlNb based alloys without compromising their strength. The formation of this structure depends on the cooling rate and the distribution and size of O phase and B2 grains. The presence of thick lamellar, sub grain, and grain boundary O phases effectively obstructs crack propagation and makes the crack path tortuous.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)
Article
Nanoscience & Nanotechnology
Chuanzheng Li, Di Zhang, Zhutian Xu, Liliang Wang, Peiyun Yi, Linfa Peng, Xinmin Lai
Summary: This study improves the resistance to micro-crack initiation of Niobium (Nb) coatings by tuning the substrate bias voltages during unbalanced magnetron sputtering. With the tailored nanocrystalline microstructure, intergranular nano-pinholes and amorphous phases can be eliminated effectively, resulting in compact and homogenous nanocrystalline grains with appropriate intragranular defects. As a result, large plastic deformation can be accommodated to avoid fracture of the Nb coatings.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Zhiling Luo, Bo Li, Wang Gao, Qing Jiang
Summary: Interstitial defects are crucial for the irradiation performance of high-entropy alloys. This study reveals the role of chemical bonding and magnetic effects in the formation of interstitials in high-entropy alloys and provides guidance for designing advanced alloys with optimal irradiation resistance.
SCRIPTA MATERIALIA
(2024)
Article
Materials Science, Multidisciplinary
H. Xu, S. F. Yang, E. H. Wang, C. Y. Guo, Y. S. Liu, X. M. Hou, Y. L. Zhang
Summary: The oxidation behavior of Ni-based superalloy GH4742 exposed to water vapor was studied, revealing that the presence of water vapor affects the formation of oxide layer and leads to the enrichment of non-protective Ni and Co in the oxides. At elevated temperatures, spallation of the oxide scale occurs and the consumption of Cr is reduced.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
Yuanyuan Liu, Jing Wu, Xing Li, Jie Chen, Yingying Li, Xingrui Luo, Tengfeng Xie, Qingqing Qiu, Tongxiang Liang
Summary: In this study, a promising photocatalytic system of CoTiO3/MOF-derived In2S3 type-II heterogeneous catalyst with different weight percentages was prepared by a simple hydrothermal method. The system exhibited remarkable photocatalytic and electrocatalytic properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Yan Zhang, Yong Ren, Jun Li, Yang Li, Jing Ni, Bo Dai, Yong Wang
Summary: This study achieves a controlled nonvolatile magnetization reversal by applying a current pulse to the NiFe/NiO exchange-bias bilayers under a zero magnetic field. It provides a new method for realizing controlled nonvolatile magnetic moment reversal and has potential for innovative designs in future magnetic memory devices.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
B. I. Rabiu, B. Huang, X. Luo, Y. Q. Yang
Summary: Doped and undoped ternary and binary Mg2Sn solid solutions were fabricated, and the effects of Cu2S addition on the thermoelectric properties were investigated. It was found that Cu2S addition increased the electrical conductivity and Seebeck coefficient, while decreasing the thermal conductivity. The ternary compositions with Si and Ge showed high power factors due to optimized Seebeck coefficient and electrical conductivity.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ziyi Tang, Yujie Fu, Ke Zhao, Jueqi Zhu, Huan Liang, SaiSai Lin, Hao Song, Weihong Wu, Xiao Zhang, Chenghang Zheng, Xiang Gao
Summary: In this work, a two-chamber electrolyzer testing system was designed to accurately evaluate the catalytic performance of water splitting electrocatalysts under industrially relevant conditions. Ni alloy HER catalysts were synthesized using a one-step electrodeposition method, and the catalytic electrodes were optimized using the testing system. The results showed efficient catalytic performance after continuous operation for 70 hours.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Materials Science, Multidisciplinary
Jun Cao, Jianhong Gao, Kun Wang, Zhuoying Wu, Xinxin Zhu, Han Li, Min Ling, Chengdu Liang, Jun Chen
Summary: This study innovatively composites silicon nanoparticles with eco-friendly biochar to fabricate a 3D globally consecutive conductive network, improving electrode conductivity and integrity. The conductivity of the network is further enhanced by P-doping, and the consecutive network improves conductivity at a macro level. The findings of this study may open up new avenues for the development of globally interconnected conductive networks in Si-based anodes, enabling the fabrication of high-performance LIBs.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)
Article
Materials Science, Multidisciplinary
Xin Tong, Guohua Wu, Ming Sun, Qiman Wang, Liang Zhang, Wencai Liu
Summary: In this study, the purification and grain refinement of Mg-9Gd-3Y alloy were successfully achieved simultaneously by one-step refining at a high temperature, using a self-developed compound flux. A physical model was proposed to explain the interactions between the flux and the alloy melt, and the mechanism of grain refinement was analyzed. The generated RECl3 was found to enhance the purification efficacy and improve the ductility of the alloy.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)
Article
Materials Science, Multidisciplinary
Chuanbiao Bie, Zheng Meng, Bowen He, Bei Cheng, Gang Liu, Bicheng Zhu
Summary: This study systematically investigates the transfer of photogenerated electrons in semiconductor/metal junctions. The results show that the behavior of electron transfer is determined by the position of the conduction band in the semiconductor and the Fermi level in the metal. Schottky junctions hinder the transfer of photogenerated electrons, while ohmic contacts facilitate it.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)
Article
Materials Science, Multidisciplinary
L. J. Huang, H. Wang, L. Z. Ouyang, M. Zhu, H. J. Lin
Summary: This study solves the problem of sluggish de/hydrogenation kinetics of Mg-based amorphous alloys by building a hydrogen pump on the surface of the alloys. The hydrogen pump effect of seeded crystalline alloy is confirmed, greatly enhancing the hydrogen absorption rate and low-temperature dehydrogenation kinetics.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)
Letter
Materials Science, Multidisciplinary
Weiming Li, Lichen Bai, Kaisheng Ming, Shijian Zheng
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)
Article
Materials Science, Multidisciplinary
Xiaohua Yang, Wentao Sun, Jiatang Chen, Yang Gao, Rongxian Zhang, Qun Luo, Tao Lyu, Lei Du
Summary: The state-of-the-art Fe/N/C catalyst shows comparable initial performance to Pt/C catalysts in PEMFCs, but experiences significant activity decay. The fast decay is related to demetallation, while the slow decay is influenced by temperature and pressure. XAS analysis reveals the evolution of Fe-N coordination to Fe-O, which explains the catalyst decay after demetallation.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)
Article
Materials Science, Multidisciplinary
Han-Ming Zhang, Lihao Zuo, Yuhang Gao, Junxia Guo, Caizhen Zhu, Jian Xu, Jinfeng Sun
Summary: A novel Co/Ni/Fe/Mn-based amorphous high entropy phosphoxide catalyst (CNFMPO) with excellent bifunctional electrocatalytic performance for alkaline water/seawater splitting is synthesized in this study. CNFMPO exhibits low overpotentials for both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), and shows satisfactory stability and inhibition of chlorite generation during seawater electrolysis.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)
Article
Materials Science, Multidisciplinary
Xiangnan Pan, Leiming Du, Guian Qian, Youshi Hong
Summary: This study investigates the behavior of very-high-cycle fatigue (VHCF) in metallic materials such as aluminum alloys and high-strength steels. The research reveals that in additively manufactured AlSi10Mg alloy, crack initiation and growth mechanisms are distinct from those in high-strength steels, but demonstrate a similar characteristic region of crack initiation known as fine granular area (FGA).
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)
