Article
Nanoscience & Nanotechnology
Qingdong Xu, Pengcheng Zhang, Lei Yang, Guomin Le, Shixiong He, Xinghui He, Xiangdong Liu, Wenyuan Wang
Summary: Thin-walled Be-38 wt%Al samples produced by laser solid forming exhibit well-defined microstructures with columnar Be grains delineated by continuous Al networks, leading to high ultimate tensile strength and yield strength.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Metallurgy & Metallurgical Engineering
Cai-he Fan, Wen-jing He, Ze-yi Hu, Qin Wu, Yu-meng Ni
Summary: 45 wt.% SiCp/6092Al, 5 wt.% beta-LiAlSiO4/6092Al and (45 wt.% SiCp + 5 wt.% beta-LiAlSiO4 (Euc))/6092Al matrix composites were successfully fabricated using spray-forming and die forging technology. The microstructures, interface structures, and phase composition of the composites were analyzed using various techniques. The thermal expansion properties, bending strength, and bending modulus of the composites were tested. The results showed uniform distribution of SiCp and beta-LiAlSiO4 (Euc) particles in the Al matrix, with strong bonding interfaces. The (45 wt.% SiCp + 5 wt.% Euc)/6092Al matrix composite had clear and straight interfaces. After T6 treatment, the composite exhibited specific thermal expansion, bending strength, and bending modulus values.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2023)
Article
Engineering, Manufacturing
Qimin Huang, Fenggang Liu, Chunping Huang, Xin Lin, Chun Xia, Zhitai Wang, Qifan You, Lixin Liu
Summary: Laser solid forming (LSF) technology has a significant impact on the manufacturing of aeronautical burn resistant titanium alloy Ti40. The Ti40 deposition blocks fabricated using LSF technique showed refined grain, precipitation of α phase and Ti5Si3 phase. The LSFed Ti40 alloy exhibited higher tensile and yield strengths compared to forged samples, and its elongation was similar to forged samples. The addition of Ti5Si3 improved oxidation efficiency and burn resistance of the Ti40 alloy.
JOURNAL OF MANUFACTURING PROCESSES
(2023)
Article
Materials Science, Ceramics
Xuehui Huang, Xiaozhan Song, Na Yang, Yu Chang
Summary: Aluminum titanate (Al2TiO5) was synthesized with additives of light magnesium carbonate and SiO2, incorporating with silicon carbide (SiC) particle. The addition of SiC and SiO2 resulted in improved densification properties and microstructure, providing high flexural strength and low thermal expansion coefficient for refractory applications with high thermomechanical solicitations.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Jiaying Gao, Fenggang Liu, Lixin Liu, Fencheng Liu, Qifan You, Yongsheng Zheng, Pengfei Wang, Hao Qiu
Summary: In this study, GH3536 and TiB2/GH3536 alloys were prepared using laser solid forming (LSF) technique, and the effects of TiB2 content on the microstructure and mechanical properties of the deposited samples were investigated. The results showed that increasing TiB2 content led to changes in the microstructure, phase segregation, grain size, hardness, and tensile properties of the samples.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Xin Du, Qiang Wu, Tong Zhang, Jianglin Zou, Rongshi Xiao, Haipeng Zhou, Ding Han, Tingyou Jiao
Summary: This study investigates the anisotropy effect of selective laser melting (SLM)-manufactured Ta10W alloy on the microstructure and mechanical properties of welds. The results reveal notable differences in microstructure and mechanical properties due to the anisotropy of the Ta10W alloy. The base metal's alignment with the welding direction affects the welds' microstructure and maximum room temperature strength.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Chunping Huang, Renyu Liang, Fenggang Liu, Haiou Yang, Xin Lin
Summary: Research shows that the Q * value is directly related to the cooling rate and heat accumulation in the top structure, leading to the formation of different microstructures; it also modifies the original structure at the bottom, affecting the subsequent thermal cycle and indirectly changing the tempered martensite morphology. The heat input also affects the mechanical properties of the sample, with the stable zone hardness decreasing with increasing Q * value and the tensile strength and yield strength of the LSFed samples decreasing considerably. The Q * value has a significant effect on heat treatment, with the largest increase in tensile strength and yield strength observed when Q * = 2.9.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Jingwei Liang, Zhenglong Lei, Yanbin Chen, Shibo Wu, Xi Chen, Meng Jiang, Shiyu Cao
Summary: High-quality ZK60 magnesium alloy samples were produced through selective laser melting, exhibiting favorable microstructures and mechanical properties. Despite the presence of a few cracks, the fine grains and nano precipitated phase played a crucial role in the mechanical performance of the samples.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Ceramics
Weiwei Sang, Hongsong Zhang, Shuaixia Liu, Wenbo Xie, Ruiyi Hou, Siqi Li, Hongjun Ma, Haoming Zhang, Xiaoge Chen, Xuhe Liu, Zefeng Zhang, Nan Wang, Yifei Zhang, Mengyan Zhang
Summary: Lu3+ doped Gd3TaO7 oxides were successfully synthesised, and the introduction of Lu3+ improved the lattice order and enhanced the mechanical and thermal properties of the material, making it a potential candidate for thermal barrier coatings.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Lairong Xiao, Zhenwu Peng, Xiaojun Zhao, Xiaoxuan Tu, Zhenyang Cai, Qi Zhong, Sen Wang, Huali Yu
Summary: In this study, laser solid forming was used to fabricate dense and crack-free specimens from nickel-based superalloy GH3536. The specimens showed obvious anisotropy in different directions, and the temperature had a significant impact on their performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Inorganic & Nuclear
Junzhu Yang, Dingfeng Yang, Yaoqiong Wang, Xuejun Quan, Yuanyuan Li
Summary: By using density functional theory and the quasi-harmonic approximation, the pressure-dependent elastic and thermodynamic properties of natural thermoelectric CoSbS material were calculated. It was found that CoSbS possesses excellent mechanical properties and stable thermoelectric performance, indicating its potential for designing thermoelectric devices with stable performance.
JOURNAL OF SOLID STATE CHEMISTRY
(2021)
Article
Chemistry, Physical
Dowon Song, Junseong Kim, Guanlin Lyu, Janghyeok Pyeon, Hak-Beom Jeon, Yoon-Suk Oh, Taeseup Song, Ungyu Paik, Yeon-Gil Jung
Summary: The study investigated the effects of substituting A and B cations in A3BO7 compounds on their thermophysical properties by imposing a significant mass difference on the substituents. YYNT ceramics exhibited low thermal conductivity and excellent thermophysical properties, making them promising candidates for new thermal barrier materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Optics
Yi Wei, Genyu Chen, Wei Li, Mingquan Li, Yunlong Zhou, Zhen Nie, Jianbo Xu
Summary: This study further optimized the optimal process parameters for micro selective laser melting (MSLM) forming SS316L. The influence of different laser diameters and powder particle sizes on forming laws was investigated. Microstructure observation revealed different defect forms and subtle structural differences in different specimens, which directly affected the mechanical properties.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Construction & Building Technology
Mahyar Ramezani, Young Hoon Kim, Zhihui Sun, Muhammad M. Sherif
Summary: This research investigates the impact of carbon nanotubes (CNTs) on the expansion, mechanical properties, and microstructure of cement mortar subjected to alkali-silica reaction (ASR). The results show that certain combinations of mix proportions can significantly mitigate the ASR-induced damages in the mortar. Specifically, specimens reinforced with a certain type of CNTs can reduce the ASR expansion and improve the compressive strength, flexural strength, and elastic moduli. Scanning electron microscopy and X-ray energy-dispersive spectroscopy reveal that CNTs resist ASR through three main chemo-mechanical mechanisms.
CEMENT & CONCRETE COMPOSITES
(2022)
Article
Materials Science, Multidisciplinary
Alexander Khaimovich, Igor Shishkovsky, Yaroslav Erisov, Anton Agapovichev, Vitaliy Smelov, Vasilii Razzhivin
Summary: Additive manufacturing is a powerful method for producing complex components for aerospace engineering using nickel-based superalloys. However, these alloys are prone to strain-age cracking and solidification issues during the manufacturing process. This study proposes a crack initiation criterion to assess the danger level of fracture energy and demonstrates its effectiveness through experimental validation.
Article
Nanoscience & Nanotechnology
Y. L. Hu, Y. L. Li, S. Y. Zhang, X. Lin, Z. H. Wang, W. D. Huang
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2020)
Article
Materials Science, Multidisciplinary
Hua Tan, Yuguang Chen, Zhe Feng, Wei Hou, Wei Fan, Xin Lin
Article
Materials Science, Multidisciplinary
Xuehao Gao, Xin Lin, Qiaodan Yan, Zihong Wang, Xiaobin Yu, Yinghui Zhou, Yunlong Hu, Weidong Huang
Summary: The study shows that with increasing Cu content, the average volume fraction and width of the beta phase in Ti/Zr-based BMGCs decrease, while the hardness significantly improves. The growth and morphology of the beta phase show different characteristics in different regions of the molten pool.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Zihong Wang, Xin Lin, Yao Tang, Nan Kang, Xuehao Gao, Shuoqing Shi, Weidong Huang
Summary: The research focused on achieving columnar-to-equiaxed transition (CET) in Al-based alloys through directed energy deposition (DED) processing with Sc-and-Zr modifications. By introducing primary Al-3(Sc,Zr) nucleation sites, CET was successfully achieved, and the relationship between solidification control parameters and precipitation behavior was established. Increasing Sc/Zr content led to a fully equiaxed grain structure, indicating the effectiveness of the approach in controlling grain morphology in laser additive manufacturing.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Engineering, Manufacturing
Zihong Wang, Xin Lin, Nan Kang, Yunlong Hu, Jing Chen, Weidong Huang
ADDITIVE MANUFACTURING
(2020)
Article
Nanoscience & Nanotechnology
Zihong Wang, Xin Lin, Nan Kang, Jing Chen, Yao Tang, Hua Tan, Xiaobin Yu, Haiou Yang, Weidong Huang
Summary: The study found that the solidification microstructure of laser additive manufacturing Al-Mg-Sc-Zr alloys varies under different cooling conditions, and that the alloy's performance can be controlled by controlling the thermal cycle. Good mechanical properties can be achieved by integrating the control of thermal history during rapid solidification and in-situ precipitation.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Nanoscience & Nanotechnology
Xiaobin Yu, Xin Lin, Zihong Wang, Shuya Zhang, Xuehao Gao, Yufeng Zhang, Yongming Ren, Weidong Huang
Summary: The study showed that the high-cycle fatigue properties of Inconel 718 (IN718) superalloy prepared using laser directed energy deposition (LDED) and subjected to a specified heat treatment scheme exhibit significant differences at room temperature and high temperatures. The fatigue limit is higher at room temperature and lower at higher temperatures, with fatigue limits only about 77% and 63% of the values observed in wrought alloys, respectively. Furthermore, the fatigue failure mode of HSA IN718 alloy changes with increasing test temperature.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Nanoscience & Nanotechnology
Xuehao Gao, Xin Lin, Qiaodan Yan, Shuya Zhang, Jinglin Lu, Tianchi Zhang, Zhe Feng, Yao Tang, Weidong Huang
Summary: The study found that increasing Cu content led to a decrease in the volume fraction of beta phase, and an increase in the volume fraction of amorphous phase and (Ti, Zr)2Cu phase; while increasing Nb content resulted in a more stable beta phase, leading to an increase in compression fracture strain.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Zehao Qin, Nan Kang, Fengying Zhang, Zihong Wang, Qian Wang, Jing Chen, Xin Lin, Weidong Huang
Summary: This study investigates the high cycle fatigue properties of an Al-Mg-Sc-Zr alloy manufactured via SLM with optimized parameters, finding periodic, inhomogeneous microstructure causing reduced fatigue life. X-ray CT results show random distribution of mainly porosity defects initiating fatigue crack. Annealed samples exhibit good fatigue strength close to high-strength 7075Al. A fatigue crack propagation mode related to defect microstructure characteristics is established for predicting fatigue properties.
INTERNATIONAL JOURNAL OF FRACTURE
(2022)
Article
Engineering, Industrial
Zhe Feng, Hua Tan, Yanbo Fang, Xin Lin, Weidong Huang
Summary: The study demonstrates that the 6.5 wt% TiB2/AlSi10Mg composite manufactured by SLM has a wide processing window and excellent tensile properties. The material exhibits uniform equiaxed microstructures, and its tensile properties surpass those of reported SLM-ed matrix alloys and other particle reinforced Al-Si composites.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Zihong Wang, Xin Lin, Nan Kang, Yanfang Wang, Xiaobin Yu, Hua Tan, Haiou Yang, Weidong Huang
Summary: This study reports a selectively laser-melted Al-Mg-Sc-Zr alloy with a good combination of strength and toughness. The fracture toughness was effectively improved through diverse intrinsic/extrinsic toughening mechanisms associated with its ultrafine and heterogeneous microstructure. This research provides a potent strategy for fabricating high-strength and high-toughness Al-based alloys.
SCRIPTA MATERIALIA
(2021)