Article
Chemistry, Physical
Bharat Gwalani, Shivakant Shukla, Donovan Leonard, Jonathan D. Poplawsky, Dean T. Pierce, Libor Kovarik, Govindarajan Muralidharan, Arun Devaraj
Summary: The study investigates the phase stability and microstructural evolution of Ni-Fe-Cr-Al-Ti alloys, and discusses the influence of heat treatment on the alloy's microstructure. Long-term aging was found to result in the coarsening and shape change of gamma' precipitates, as well as the formation of eta phase precipitates.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Manufacturing
Bharat K. Jasthi, Terrence S. Kuca, Marius D. Ellingsen, David L. Ellis, Venkata A. S. Kandadai, Todd R. Curtis
Summary: The aim of this study was to analyze the microstructure and mechanical properties of Cu-Cr-Nb (GRCop-42) and Fe-Ni-Cr (HR-1) alloy deposits produced using high-pressure cold spray. GRCop-42 powder blended with varying amounts of HR-1 powder underwent cold spray deposition, and the resulting deposits were evaluated. The use of He process gas resulted in lower porosity and better mechanical properties compared to N2 process gas. Post-deposition heat treatment improved ductility and tensile strength for both GRCop-42 and HR-1 deposits, but also caused certain undesired phase formations.
ADDITIVE MANUFACTURING
(2023)
Article
Crystallography
Nina A. Koneva, Elena L. Nikonenko, Alisa V. Nikonenko, Natalya A. Popova
Summary: This paper investigates the structure, phase composition, and morphology of a heat-resistant alloy modified by thermal treatment and additionally alloyed by rhenium using scanning and transmission electron microscope. The study shows that after directional crystallization, the alloy mainly consists of fcc-based gamma- and gamma'-phases, with the volume fraction of the phases changing slightly after annealing. Rhenium plays a role in phase formation, and high-temperature annealing modifies the structural and phase conditions of the heat-resistant alloy.
Article
Materials Science, Multidisciplinary
Ayda Shahriari, Mehdi Sanjari, Hadi Pirgazi, Fateh Fazeli, Babak Shalchi Amirkhiz, Leo A. Kestens, Mohsen Mohammadi
Summary: This study investigated the effect of heating rate on phase transformation temperatures and the microstructural evolution of Fe-Cr-Ni maraging stainless steel parts during the heating process. It was found that austenite reversion occurred in two steps, involving a diffusive mechanism and precipitation reactions. Grain refinement occurred during the continuous heating process, but the grain size increased after isothermal heating.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Lei Wang, Reza Darvishi Kamachali
Summary: This research utilized a density-based model to calculate multi-component grain boundary phase diagrams and studied the Fe-Mn-Cr, Fe-Mn-Ni, Fe-Mn-Co, Fe-Cr-Ni, and Fe-Cr-Co alloy systems. The study found that despite solute segregation enrichment, a grain boundary may have a lower solubility limit than the bulk, promoting interfacial chemical decomposition.
Article
Materials Science, Multidisciplinary
Wendao Li, Longfei Li, Changdong Wei, Ji-Cheng Zhao, Qiang Feng
Summary: The study found that increasing Ni content increases the gamma' volume fraction in long-term aged microstructures, but also leads to the precipitation of the chi phase. Decreasing W content significantly reduces the gamma' volume fraction, while the addition of Cr can counteract this effect.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Metallurgy & Metallurgical Engineering
Shubhada Kar, L. K. Meena, V. C. Srivastava, G. K. Mandal
Summary: This study aims to design low-density and cost-effective medium entropy alloys with excellent strength-ductility combinations and evaluate their mechanical properties and corrosion behavior. Two alloy systems were designed and produced through induction melting and casting route. The alloys exhibited excellent strength-ductility synergy and the addition of Co significantly improved the mechanical properties. The corrosion behavior of the alloys was investigated and the 0Co alloy showed better corrosion resistance compared to the 14Co alloy.
TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS
(2023)
Article
Materials Science, Multidisciplinary
Hao Cheng, Yong-Cheng Lin, Dao-Guang He, Hong-Bin Li, Zi-Jian Chen, Jun-Cheng Zhu
Summary: The study investigated the hot deformation behavior and microstructure evolution of stress and stress-free aged Ni-Cr-Nb-Mo-Ti alloy through hot compressive tests. It was found that the basket-weave delta-phases refine grains during hot deformation, but significantly hinder the growth of DRX grains and lead to a substantial increase in peak stress. Dislocations pinned near the basket-weave delta-phases can hinder grain boundary migration and accelerate the DRX process during hot deformation.
ADVANCED ENGINEERING MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Adelajda Polkowska, Sebastian Lech, Piotr Bala, Wojciech Polkowski
Summary: This study systematically examined the effect of heat-treatment temperature on the structural evolution and mechanical response of Haynes (R) HR-224 (R) alloy, revealing a significant increase in room temperature tensile strength and a reduction of ductility under 600-800 degrees C/2 h heat treatment conditions. Discontinuous precipitation (DP) of (gamma + gamma')/M23C6 was identified as the main structural process affecting the observed mechanical behavior of the material.
MATERIALS CHARACTERIZATION
(2021)
Article
Thermodynamics
Peisheng Wang, Biao Hu, Xiaozhong Huang, Cong Zheng
Summary: The thermodynamic description of Co-Cr-Ni, Co-Cr-W and Co-Ni-W systems, with a focus on reliable TCP phase description while considering the magnetic effects of ferromagnetic elements, has been discussed. The CALPHAD assessment indicates that the current description can well describe experimental data.
CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY
(2021)
Article
Chemistry, Physical
Emil Eriksson, Fabian Hanning, Joel Andersson, Magnus Hornqvist Colliander
Summary: Understanding the microstructural behaviour of materials during thermomechanical processing is crucial for achieving optimal mechanical properties. We investigated the dynamic recrystallization (DRX) behaviour of Ni-base superalloy Haynes 282 during hot compression and observed the formation of small DRX grains before the peak strain. The DRX process accelerated significantly above a certain strain, and the material was fully recrystallized at a higher strain. Contrary to common assumptions, many DRX grains contained dislocation substructures, even at small strains.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Mechanical
Le Li, Zhenghao Chen, Koretaka Yuge, Kyosuke Kishida, Haruyuki Inui, Martin Heilmaier, Easo P. George
Summary: The plastic deformation behavior of equiatomic Cr-Fe-Co-Ni medium-entropy alloy was investigated through compression and tension experiments. The critical resolved shear stress (CRSS) for {111}<1((1)over bar)0> slip was found to be 44-45 MPa at room temperature without significant tension-compression asymmetry. The CRSS increased rapidly with decreasing temperature, but the temperature dependence dulled below 77 K due to the inertia effect. The 0 K CRSS was determined to be 200 MPa, higher than Cr-Mn-Fe-Co-Ni high-entropy alloy but lower than Cr-Co-Ni medium-entropy alloy.
INTERNATIONAL JOURNAL OF PLASTICITY
(2023)
Article
Chemistry, Physical
Steffen Scherbring, Guanghui Chen, Bastian Veltel, Gert Bartzsch, Julia Richter, Malte Vollmer, Malte Blankenburg, Saikat Shyamal, Olena Volkova, Thomas Niendorf, Ulrich Lienert, Puspendu Sahu, Javad Mola
Summary: Adding aluminum to stainless steel can improve its performance, particularly in terms of increasing yield strength, as observed in this study on the influence of aluminum addition on microstructure and mechanical properties.
Article
Materials Science, Multidisciplinary
Yao Zhang, Jinlin Li, Hongyao Yu, Jiudong Sun, Zhenhua Wang, Qing Wang
Summary: The present study investigated the effect of Ti, Nb, or Ta addition on the microstructural stability of coherent gamma/gamma ' phases in designed high-temperature alloys. The results showed that the addition of Ti, Nb, or Ta not only reduced the size of gamma ' nanoparticles, but also improved the microstructural stability during aging, leading to enhanced mechanical properties.
JOURNAL OF MATERIALS RESEARCH
(2023)
Article
Nanoscience & Nanotechnology
Jinbo Gu, Jingyuan Li, Jun Yanagimoto, Wang Li, Lihao Li
Summary: This study investigated the microstructural evolution and mechanical property changes of new nitrogen-alloyed Cr-Mo-V hot-working die steel during long-term tempering, and discussed the impact mechanism of nitrogen on tempering stability. Results show that nitrogen mainly improves tempering stability by enhancing precipitation hardening and grain refinement, with a significant effect on the allowed quenching temperature and carbides transformation during tempering process. The improving effect of nitrogen in precipitation hardening becomes more distinct with an increase in tempering time.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Composites
Jingxiang Huang, Weihua Li, Mingming Chen, Minghui Fu
Summary: The paper discusses the design of materials microstructure to achieve zero thermal expansion and negative Poisson's ratio effects, and the study of lightweight mechanical metamaterials with NTE and NPR effects, which provides important reference for the development of smart sensors and the multi-functional integration of structures.
APPLIED COMPOSITE MATERIALS
(2022)
Article
Engineering, Environmental
Jie Fan, Yuhang Sun, Mingli Fu, Jiaqi Li, Daiqi Ye
Summary: Modulating metal support interactions by switching the strength and temperature of reducing gases is an effective way to enhance the catalytic performance of Pt/CeO2 for toluene oxidation. Different reduction treatments can stepwise enhance reducibility and oxygen vacancy concentration, which in turn affects the activity.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Automation & Control Systems
Mingyu Fu, Lulu Wang
Summary: This paper proposes an event-triggered-based finite-time cooperative path following control scheme for underactuated marine surface vehicles. By utilizing a finite-time extended state observer and a guidance law based on velocity estimation values, cooperative control of multiple paths is achieved.
ASIAN JOURNAL OF CONTROL
(2023)
Article
Environmental Sciences
Kai Li, Dongqing Zhang, Xiaojun Niu, Huafang Guo, Yuanyuan Yu, Zhihua Tang, Zhang Lin, Mingli Fu
Summary: This study investigated the CO2 adsorption behavior of KOH-modified biochars and found that the modification significantly enhanced their specific surface area and CO2 adsorption capacity. The development of micropores and the presence of hetero atoms positively influenced the adsorption capacity. Both physical and chemical adsorption played a crucial role in CO2 capture.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Xiaolan Zhang, Yuhao Bi, Minghui Fu, Xinyu Zhang, Bingli Lei, Xin Huang, Zhenzhen Zhao
Summary: The distribution and removal efficiency of organophosphate ester pollutants vary in water sources and treatment facilities. Some of these esters pose limited ecological risks while others may have potential health implications.
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
(2023)
Article
Chemistry, Physical
Jin Zhang, Kang Wu, Juxia Xiong, Quanming Ren, Jinping Zhong, Huidong Cai, Haomin Huang, Peirong Chen, Junliang Wu, Limin Chen, Mingli Fu, Daiqi Ye
Summary: Copper-ceria (Cu-Ce) catalysts with regulated asymmetric oxygen vacancies (ASO(V)) were synthesized and studied for low-temperature catalytic oxidations. The concentration of ASO(V) was accurately controlled through pH regulation, contributing to the best catalytic activity and stability. In-situ techniques revealed the dynamic exchange behaviors of ASO(V) during oxygen-containing reactions and CO oxidations.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Engineering, Manufacturing
Jun-Yuan Zheng, Hui Liu, Ming-Wang Fu
Summary: In this study, shafted microgears were manufactured using a microforming process. A grain-based modeling approach was used to simulate the forming process and investigate the effects of grain size on forming behavior and process performance. Five deformation zones with different hardness and stress-strain distributions were identified in the microstructures. The undesirable geometries of microgears, such as material unfilling, burr, and inclination, were observed and the inclination size increased with grain size. By redesigning the punch and adding a die insert, the forming quality of the microgears was improved.
ADVANCES IN MANUFACTURING
(2023)
Article
Biochemistry & Molecular Biology
Jiahao Liang, De Wang, Xin Li, Weiwen Huang, Chun Xie, Minghui Fu, Hongmei Zhang, Qiong Meng
Summary: In this study, 47 full-length HbTPS genes were identified in the Hevea brasiliensis genome, and they were divided into five subfamilies based on phylogenetic analysis. HbTPSs were found to participate in cellular components, molecular functions, and biological processes, as well as seven secondary metabolite pathways. They may be regulated by phytohormones, as suggested by the presence of cis-acting elements. RNA-Seq analysis revealed tissue-specific expression patterns of different HbTPSs. These findings contribute to understanding the role and molecular mechanism of HbTPSs and the regulation of terpenoid biosynthesis in H.brasiliensis.
BIOCHEMICAL GENETICS
(2023)
Article
Engineering, Environmental
Wuwan Xiong, Linhui Liu, Anqi Guo, Dongdong Chen, Yulong Shan, Mingli Fu, Junliang Wu, Daiqi Ye, Peirong Chen
Summary: An economical and sustainable approach for synthesizing SSZ-13 zeolites, key materials for reducing nitrogen oxides (NOx) in automotive exhausts and selective methane conversion, has been reported. The approach involves recycling and reusing waste liquids containing the organic structure-directing agent (OSDA). The waste liquid-derived SSZ-13 zeolites show similar properties to conventionally synthesized ones.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Plant Sciences
Y. Li, H. Han, M. Fu, X. Zhou, J. Ye, F. Xu, W. Zhang, Y. Liao, X. Yang
Summary: This study analyzed the characteristics and expression patterns of the NAC transcription factor family in Ginkgo biloba using bioinformatics and quantitative reverse transcription PCR. The results showed that NAC transcription factors play important roles in plant growth and development, as well as in response to abiotic stresses and flavonoid biosynthesis in Ginkgo biloba.
Article
Chemistry, Physical
Bangfen Wang, Xiufeng Li, Yuhai Sun, Hailin Xiao, Mingli Fu, Shuhua Li, Hong Liang, Zhiwei Qiao, Daiqi Ye
Summary: Pt/CeO2 catalysts were modified with non-thermal plasma to enhance the catalytic activity for toluene oxidation. The plasma treatment affected the Pt particle size, CeO2-rod length, oxygen vacancy concentration, and Pt/CeO2 reducibility. The impact of plasma on Pt atoms was more significant than on oxygen vacancies.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Bangfen Wang, Ni Wang, Yuhai Sun, Hailin Xiao, Mingli Fu, Shuhua Li, Hong Liang, Zhiwei Qiao, Daiqi Ye
Summary: This study applied a dielectric barrier discharge plasma to modify the performance of Pt/CeO2 catalyst for toluene oxidation. Different plasma discharge times were used and it was found that discharge time significantly affected the catalytic activity of Pt/CeO2 catalyst. The Pt/CeO2-PT3 (30 min) and Pt/CeO2-PT6 (3 h) catalysts showed improved catalytic activity, while the Pt/CeO2-PT5 (2 h) catalyst exhibited decreased activity due to surface carbon deposition.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Applied
Jingshu Cui, Xiaojun Niu, Dongqing Zhang, Jinling Ma, Xifen Zhu, Xiaoxian Zheng, Zhang Lin, Mingli Fu
Summary: A novel flocculation strategy using chitosan-amphoteric starch (C-A) dual flocculants was proposed for simultaneously removing Microcystis aeruginosa and algal organic matter (AOM), providing new insights for harmful algal bloom control in an efficient, cost-effective and ecologically friendly way.
CARBOHYDRATE POLYMERS
(2023)
Review
Materials Science, Multidisciplinary
Mingming Fu, Yifeng Shen, Hao Zhou, Xiaojia Liu, Wenjun Chen, Xing Ma
Summary: Gallium-based liquid metals have unique properties that have attracted significant interest in the biomedical field. Photothermal therapy has shown great development in antitumor treatment and the photothermal capability of gallium-based liquid metals provides unparalleled advantages. This review presents the major preparation methods of liquid metal micro/nanoparticles, the mechanism of liquid metal photothermal conversion, and discusses the factors affecting the photothermal properties of liquid metals. The biological applications, challenges, and opportunities for the clinical translation of liquid metals in biomedical applications are also discussed.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Nanoscience & Nanotechnology
Ling Lin, Shanshan Liu, Zhangwei Chen, Yan Xia, Juanjuan Xie, Mingqiang Fu, Danbo Lu, Yuan Wu, Huali Shen, Pengyuan Yang, Juying Qian
Summary: Dilated cardiomyopathy (DCM) is characterized by left ventricular dilatation and contractile dysfunction, and its molecular mechanisms are not fully understood. This study examined the transcriptome and proteome of healthy and DCM myocardial tissue, identifying dysregulated processes such as extracellular matrix, mitochondrial function, and muscle contraction. Furthermore, a 4-biomarker panel (CTSB, vWF, C9, and MFGE8) was developed for the diagnosis of DCM.
Article
Materials Science, Multidisciplinary
Shuai Zhang, Shuye Zhang, Hongzhi Zhou, Kyung-Wook Paik, Tianran Ding, Weimin Long, Sujuan Zhong, Peng He
Summary: Microwave Hybrid Heating (MHH) is a promising method for material joining, allowing for selective and uniform heating. This experimental study focused on investigating the characteristics and reliability of joints made using nano-Sn-3.0Ag-0.5Cu soldering paste and MHH technique. The research findings showed that the shear strength of the joints reached its peak value under specific microwave power and exposure time, but decreased after thermal shock tests.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Peibin Ma, Mingyang Wang, Aiying Chen, Lijian Gu, Zhiyi Ding, Xiaogui Wang, Bin Gan
Summary: Nano-twinned boundaries in high-temperature alloys play a crucial role in regulating the distribution of nano-precipitates and enhancing mechanical properties.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Jiachen Zhang, Fan Lu, Xinxin Liu, Taiwen Huang, Rui Li, Changsheng Tan, Guojun Zhang, Lin Liu
Summary: This study investigates the effects of Re and Ta interactions on the precipitation of the TCP phase in experimental alloys under long-term thermal exposure. The study finds that microstructure segregation is not fully eliminated even with standard heat treatment, and the interaction between Re and Ta enhances the formation of the TCP phase. Thermodynamic calculations and first-principles analysis reveal that Re significantly improves the driving force of TCP phase precipitation. The study also observes a phase transition from the sigma-phase to the P-phase, with Ni playing a crucial role in the diffusion process.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Ronit Roy, Adil Shaik, Matthew Topping, Fei Long, Mark R. Daymond
Summary: This study demonstrates the improvements in characterizing localized dislocation distribution using the HR-EBSD method compared to the conventional approach. Two extreme examples of deformation conditions were investigated to show the efficacy of HR-EBSD in identifying dislocations and subtle features. The direct correlation between slip bands and HR-EBSD estimated GNDs is also presented, enhancing the scope of this approach in identifying individual slip bands.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Wenshan Guo, Hui Zhang, Qingjun Zhou, Guangchun Xiao, Ning Guo, Wei Zhao, Gang Wang
Summary: The microstructures and corrosion resistance of TC11 components were significantly improved using a high-power, high-speed laser metal deposition (LMD) process and subsequent post-heat treatment, with greater improvements observed in the deposition direction. The significant improvement of corrosion resistance in the deposition direction is mainly due to the weakening of the charged galvanic corrosion effect between the non-interlayer zone and interlayer zone.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Shuai Xu, Rui Cao, Junheng Gao, Yu Zhang, Haitao Zhao, Shuize Wang, Yuhe Huang, Guilin Wu, Honghui Wu, Chaolei Zhang, Xinping Mao
Summary: In this study, the microstructures and mechanical properties of interphase precipitation strengthening micro-alloyed steels were investigated. The addition of Cr was found to increase the yield strength without significant decrease of ductility. Thermodynamics analysis revealed that the addition of Cr led to grain refinement and decrease of sheet spacing of nanoprecipitates. Calculations showed that the decrease of interphase-precipitated carbides sheet spacing and the refinement of grain size were responsible for the strength enhancement of Cr microalloyed steel.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Zhaoxin Zhong, Biao Zhang, Yuhan Ren, Jian Ye, Jiawei Zhang, Feng Ye
Summary: In this study, bioinspired web-liked multiphase composites were successfully constructed using boron-modified polysilazane polymer. The composites consisted of long TiB nanowires as 'web' and hybrid TiC and Ti3Si particles as 'nodes'. The enhanced strength of these composites was attributed to the synergistic load transfer of the hybrid reinforcements. This study provides a promising design approach for developing high-performance composites with high reinforcement content, utilizing polymer instead of traditional ceramic powder.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Geng Liu, Linran Yu, Jie Su, Ran Ding, Min Xiong, Qi Gao
Summary: In this study, a flash austenitization heat treatment approach was used to achieve a dual-phase microstructure consisting of retained austenite and fine-grained ferrite in low-carbon TRIP steel. Phase-field simulations revealed the acceleration of ferrite transition kinetics in the Mn-depleted region and the influence of chemical heterogeneity of C and Mn on the stabilization of austenite.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Zhichao Yang, Dehui Zheng, Zhen Wang, Tingbin Liang, Shuangbao Wang
Summary: In this study, the configurations, formation process, and properties of the Cu-rich layer formed during TJE of Al alloys were revealed using aberration-corrected scanning TEM (STEM), STEM image simulations, and first-principles calculations. The results showed a new orientation relationship between the Cu-rich layer and Al matrix, and provided insights into the formation mechanisms of the Cu-rich layer and Cu diffusion zone.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Shuai Chen, Ruyu Tian, Jiayue Wen, Yanhong Tian
Summary: In this study, the interfacial microstructure evolution and reliability of Cu/Sn-3.0Ag-0.5Cu (SAC305)/Ni and Cu/Sn-3.0Ag-0.5Cu-0.05TiO2 (SAC305-0.05TiO2)/Ni interconnections under thermal shock were investigated. The results showed that the addition of TiO2 nanoparticles can suppress the growth of interfacial IMCs and improve the reliability of the connections.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Yunbin Lu, Yangju Feng, Wei Wang, Wenke Wang, Jianlei Yang, Wenzhen Chen, Guorong Cui, Dongdong Zhuang, Hongyang Cao
Summary: In order to improve the wear resistance of titanium alloy, titanium matrix composites with network distributed TiBw were fabricated. The results showed that the wear rate of the composites decreased by 17.2% at room temperature and 38.4% at high temperature compared to the TA15 alloy. The TiBw in the composites enhanced work hardening, improved thermal conductivity, and effectively hindered dislocation movement and promoted dynamic recrystallization during high-temperature wear.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Jubert Pasco, Lu Jiang, Thomas Dorin, Ali Keshavarzkermani, Youliang He, Clodualdo Aranas Jr
Summary: The unique structure and solute distribution of CoCrMo alloys produced using Laser Powder Bed Fusion technique require custom heat-treating processes to achieve the targeted phase distribution and mechanical properties. This study investigates the phase transformation behavior and precipitate distribution of CoCrMo samples after aging heat treatment. The results show differences in phase fraction and nucleation sites between directly aged and solution heat-treated samples.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Zipeng Ma, Meng Zhou, Baohong Tian, Yi Zhang, Heng Li, Xu Li, Jin Zou, Haoyan Hu, Ke Jing, Yong Liu, Alex A. Volinsky
Summary: In this study, two electrical contact composites were prepared using the vacuum hot pressing sintering endo-oxidation method. The addition of Y2O3 had no negative effects on the electrical conductivity and hardness of the composites. Moreover, it reduced the welding force and arc energy, and improved the stability of the contacts.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Wei Sun, Ning Cui, Shuling Zhang, Tiewei Xu, Xiaopeng Wang, Fantao Kong
Summary: A laminated composite was successfully fabricated and its microstructure and mechanical properties were investigated. The composite exhibited high bonding strength, improved flexural strength and fracture toughness, and superior tensile properties compared to the monolithic alloy.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Zih-You Wu, Yin-Ku Lee, Su-Yueh Tsai, Po-Yu Chen, Jenq-Gong Duh
Summary: With the development of the artificial intelligence (AI) industries, electronic packaging is advancing towards high density, high efficiency, and multi-functionality. The application of microbumps is necessary to achieve high density and small-scale interconnection. In this study, three types of full intermetallic compounds (IMCs) bumps were fabricated, and the mechanical and thermal properties of IMCs were analyzed. The results showed that the full IMCs bumps with added Ni and Zn exhibited consistent structure and excellent thermal stability, providing a reliable microstructure for application.
MATERIALS CHARACTERIZATION
(2024)
