Article
Materials Science, Ceramics
E. Acar, M. Aydin
Summary: The study revealed that FGMs exhibited higher storage moduli and damping capacities compared to MMCs. Damping capacity decreased as the vibrating frequency increased, while storage moduli were more sensitive to frequency change at higher temperatures.
JOURNAL OF ASIAN CERAMIC SOCIETIES
(2021)
Article
Mechanics
J. Balmon, S. Fouvry, P. Villechaise, J. Paturaud, J. Tschofen, J. Feraille
Summary: The effect of SiC particle orientation on the fretting cracking process of an Al-SiC metal matrix composite (MMC) was investigated. It was found that the maximum crack extension occurred when the SiC particles were collinear with the crack path. On the other hand, the minimum extension was observed when the SiC particles were perpendicular to the crack path. The experiments were simulated using a 3D finite element modeling (FEM), and the crack arrest thresholds Delta Kth as a function of SiC particle orientation were determined.
ENGINEERING FRACTURE MECHANICS
(2023)
Article
Mechanics
S. M. Thompson, M. Talo, B. Krause, A. Janke, M. Lanzerotti, J. Capps, G. Lanzara, W. Lacarbonara
Summary: This paper discusses the mechanical and dissipative properties of nanocomposite materials made of a high-performance thermoplastic polymer integrated with branched carbon nanotubes as nanofiller. The experimental results show that increasing the weight fraction of branched carbon nanotubes improves both the storage and loss moduli of the nanocomposites. The differences in damping capacities between CNT/polymer and bCNT/polymer nanocomposites are attributed to the different mechanics of the nanocomposites.
COMPOSITE STRUCTURES
(2022)
Article
Chemistry, Physical
Kaiwen Shi, Yuekai Yan, Hui Mei, Laifei Cheng
Summary: The study suggests using heat treatment to optimize the coefficient of thermal expansion and damping capacity of 2D C/SiC composites. Results show that CTE can be adjusted within a wide range by controlling the heat treatment temperature, and introducing thermally-induced microcracking can improve the damping capacity of the composites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Ceramics
Jingfei Yin, Min Li, Jiuhua Xu, Wenfeng Ding, Honghua Su
Summary: Silicon carbide fiber-reinforced silicon carbide ceramic matrix composite (SiCf/SiC) shows great potential for manufacturing aero-engines due to its high-temperature resistance and lightweight properties. However, the machining process of SiCf/SiC is challenging due to the material's hardness and brittleness, which often results in uncontrolled damages such as edge chipping, cracks, and fiber breakage. This research focuses on studying the edge chipping characteristics of SiCf/SiC during single grain grinding. The study finds that the edge chipping in SiC matrix grinding is influenced by pre-existing defects, while the edge chipping in SiC fiber grinding is dependent on both fiber orientation and grinding speed. Grinding perpendicular to the fiber orientation results in larger edge chipping compared to grinding along with the fiber orientation, and higher grinding speeds also decrease the width of the edge chipping area. Therefore, increasing grinding speed can enhance material removal rate without enlarging edge chipping, which is crucial for achieving desired surface finish and damage control in the machining of SiCf/SiC.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Halim Choi, Balazs Illes, Tamas Hurtony, Jaeduk Byun, Attila Geczy, Agata Skwarek
Summary: Adding SiC nano-phases to the composite solder alloy decreases corrosion resistance and increases Sn whisker growth. Whisker growth is caused by localized corrosion and intermetallic layer growth at the solder joint, resulting in mechanical stress due to volumetric changes.
Article
Engineering, Manufacturing
Ganting Yang, Yifan Han, Anliang Lu, Qiang Guo
Summary: Micro-pillars made from RGO-reinforced Al-Mg-Si alloy after peak-ageing treatment show improved damping capacity and resistance to plastic deformation. The increase in damping coefficient is attributed to the combined effect of dislocation impedance, dislocation looping and cutting at precipitates, and formation of nano-twins.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)
Article
Engineering, Multidisciplinary
Dengshan Zhou, Xiuzhen Zhang, Ali Tehranchi, Junhua Hou, Wenjun Lu, Tilmann Hickel, Dirk Ponge, Dierk Raabe, Deliang Zhang
Summary: Stacking faults (SFs) can be used to increase the strength and ductility of metal matrix composites. However, SFs are rarely observed in Al alloy matrix composites. In this study, SFs are introduced into an ultrafine-grained Al(Mg)-Al3Mg2 composite, resulting in improved yield strength and tensile elongation.
COMPOSITES PART B-ENGINEERING
(2022)
Article
Materials Science, Ceramics
Deng Gong, Youfang Cao, Xiaobing Deng, Longtao Jiang
Summary: This paper investigates the dimensional stability mechanisms of SiC/Al composites during thermal cycling using high-precision thermal dilatometer, XRD and Cs-TEM. The study reveals the integrated effect of dislocations, internal stress and precipitates on the dimensional change of SiC/Al composites. It is found that SiC/2024Al composites show significantly higher dimensional stability, which is important for improving the reliability of precision instruments.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Yi-feng Xiong, Cong Liu, Wen-hu Wang, Rui-song Jiang, Bo Huang, Dong-hui Wang, Sheng-guo Zhang
Summary: In this study, investigations were carried out on ultrasonic vibration-assisted milling-grinding of SiC fiber-reinforced SiC-based ceramic matrix composite, aiming to propose a primary criterion for the machined surface assessment of fiber-reinforced composites. It was found that non-contact measuring equipment was recommended for surface quality measurement, and 3D surface roughness was suggested for describing the machined surface quality. The measuring area size significantly influenced the 3D roughness result, and the size was determined based on the consideration of measuring time consumption and the reliability of measured data.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Xiang Li, Guo Chang, Wei Zhang, Longlong Dong, Wangtu Huo
Summary: This paper characterizes the interfacial microstructure and damping behavior of the novel graphene oxide/TiNi laminate composite sheet. The results show that the composite sheet has a well-bonded GO/TiNi interface and alternating laminate structure. Compared to the TiNi alloy and TiNi laminate sheet without GO, the GO/TiNi laminate composite sheet exhibits optimal intrinsic damping capacities due to the effective introduction of high damping GO reinforcement.
Article
Materials Science, Ceramics
Zeshui Xu, Fang Ye, Laifei Cheng, Chaokun Song, Chuchu Guo, Qing Zhang
Summary: Quasi-isotropic carbon fiber-reinforced pyrolytic carbon and silicon carbide matrix (C-f/C-SiC) composites and chopped silicon carbide fiber-reinforced silicon carbide matrix (SiCf/SiC) composites were prepared using an airlaid process combined with chemical vapor infiltration. The composites showed random fiber distribution and homogeneous pore size. The C-f/C-SiC composites exhibited higher tensile strength and interlaminar shear strength compared to the SiCf/SiC composites due to the appropriate interfacial shear strength and introduction of low-modulus and highly textured PyC matrix.
CERAMICS INTERNATIONAL
(2022)
Article
Agricultural Engineering
Atikur Rahman, Joseph Fehrenbach, Chad Ulven, Senay Simsek, Khwaja Hossain
Summary: The study highlights the potential of wheat bran as a natural fiber in manufacturing bio-based composites. Pre-treatment with sodium hydroxide increases cellulose content and enhances bending strength, but leads to reduced ductility and impact resistance.
INDUSTRIAL CROPS AND PRODUCTS
(2021)
Article
Nanoscience & Nanotechnology
C. Q. Hu, H. L. Du
Summary: This study compared the fretting fatigue behaviors of metal matrix composite 2124 Al-Cu-Mg alloy and monolithic alloy 2024, showing superior performance in the low cycle regime but not in the high cycle regime.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Nanoscience & Nanotechnology
Hu Sun, Aibin Ma, Jinghua Jiang, Yuhua Li, Qiong Xu
Summary: Constant engineering stress tensile creep behavior of AZ31 magnesium matrix composites with SiC particles showed better creep resistance at high temperatures and low stresses compared to unreinforced AZ31 alloy. The high apparent stress exponents and apparent activation energies imply the presence of threshold stress in the creep behavior. The true stress exponent of the composite indicates that the possible creep mechanism is the climb-controlled creep model controlled by lattice diffusion.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
