Article
Optics
Jie Zhang, Qunli Zhang, Yifan Zhuang, Volodymyr Kovalenko, Jianhua Yao
Summary: The research investigate the hot corrosion behavior of laser deposited Inconel 718 alloy under different heat treatment conditions and found that the hot corrosion performance is closely related to the heat treatment method.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Picha Panmongkol, Isaratat Phung-on
Summary: The research demonstrates that using different mixtures of N-2 can improve the properties of weld metal in cleaning food processing equipment. By adding N-2, the pitting corrosion potential can be increased and the general corrosion rate can be decreased. At least 15% N-2 mixture is sufficient to improve the properties of weld metal and reduce the occurrence of solidification cracking.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Materials Science, Multidisciplinary
Heng Duan, Bin Liu, Ao Fu, Junyang He, Tao Yang, C. T. Liu, Yong Liu
Summary: This study successfully prepared a FeCrNi medium entropy alloy with ultrahigh Cr content using SLM technology, showing excellent mechanical properties and corrosion resistance mainly attributed to the stable passive film formed by a large number of cell boundaries.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Tao Wang, Chao Wang, Juanjuan Li, Linjiang Chai, Chong Deng, Jun Luo, Yun Huang
Summary: In this study, a defect-free CoCrFeNiMo0.2 high entropy alloy coating with an average thickness of 990 μm was successfully prepared on an Inconel 718 substrate by laser cladding. The coating exhibited good metallurgical bonding with the substrate, improved thermal erosion resistance, outstanding wear resistance, and enhanced corrosion resistance.
MATERIALS CHARACTERIZATION
(2022)
Article
Nanoscience & Nanotechnology
Vitor V. Rielli, Flora Godor, Christian Gruber, Aleksandar Stanojevic, Bernd Oberwinkler, Sophie Primig
Summary: This study reveals the influence of geometrically necessary dislocations (GNDs) generated during hot deformation on the age-hardening performance of Alloy 718 (A718). Lower GND density during high-temperature forging results in increased precipitation of gamma '' monoliths and a two-fold hardness increase after aging. At all selected forging temperatures, higher GND density at an intermediate strain rate generates lower fractions of duplex co-precipitates, minimizing the age-hardening increment. Understanding the inverse correlation between GND density and age-hardening efficiency is crucial for designing A718 for next-generation aerospace applications.
SCRIPTA MATERIALIA
(2023)
Article
Nanoscience & Nanotechnology
Yanxin Qiao, Wentao Zhang, Najla Almasoud, Xinwang Shen, Shunli Zheng, Taghrid S. Alomar, Zeinhom M. El-Bahy, Mohamed M. Ibrahim, Hassan Algadi, Wen Liu
Summary: The corrosion resistance of Inconel 718 alloy prepared by selective laser melting (SLM) is superior to that of the rolled counterpart due to the difference in the microstructure and the chemical compositions of the passive film. The SLMed 718 alloy suffers from severely localized corrosion caused by micro-galvanic corrosion induced by the Laves phase. Furthermore, compared with the rolled counterpart, the passive film formed on SLMed 718 alloy has more content of Cr2O3 and less content of NiO.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2023)
Article
Materials Science, Ceramics
A. Q. Li, N. Lin, R. Li, Z. G. Wu, Z. Y. Wang, C. Ma
Summary: Novel (Ti,Hf)(C,N) ceramics with varying hafnium contents were fabricated via carbothermal reduction-nitridation and subsequent spark plasma sintering. The addition of Hf promoted the sintering densification and improved the mechanical properties, wear properties, and corrosion resistance of the ceramics. The potential applications of (Ti,Hf)(C,N) ceramics include machining tools and wear-resistant parts.
CERAMICS INTERNATIONAL
(2023)
Article
Engineering, Manufacturing
Jian Lin, Xibo Wang, Yongping Lei, Ruigang Wei, Fu Guo
Summary: Pulsed laser welding was used to join ultra thin Inconel 718 alloy foils, where joint geometry and hot cracking were observed and the effect of heat input on crack length was investigated. The crack initiation and propagation were main reasons presented in the study, with crack length being reducible by applying low heat input.
JOURNAL OF MANUFACTURING PROCESSES
(2021)
Article
Materials Science, Multidisciplinary
Tom Sanviemvongsak, Daniel Monceau, Martin Madelain, Clara Desgranges, James Smialek, Bruno Macquaire
Summary: The study compared the cyclic oxidation resistance at 900 degrees C of the alloy 718 produced by laser beam melting and electron beam melting with that of the wrought-718 alloy, revealing significant differences in the rate of oxide layer spallation and the adhesion of the oxide scale. Standard heat treatment and surface grinding may slightly delay the catastrophic spallation. Additionally, the quantitative discussion on the role of sulfur and manganese on the adhesion of the oxide scale was conducted using thermodynamic modelling.
Article
Chemistry, Physical
Jozef Iwaszko, Monika Strzelecka
Summary: The effect of surface remelting treatment on the microstructure and corrosion resistance of the AZ91 magnesium alloy was investigated. The study showed that surface remelting treatment resulted in favorable microstructural changes, leading to improved corrosion resistance. GTAW technology was found to be highly effective and a valuable alternative to laser techniques.
Article
Materials Science, Multidisciplinary
Arshad Yazdanpanah, Mattia Franceschi, Reynier I. Revilla, Saeed Khademzadeh, Iris De Graeve, Manuele Dabal
Summary: The stress corrosion cracking (SCC) behavior of L-PBF processed alloy 718 in a chloride-containing solution was investigated using the microcapillary method under constant tensile loading. The results were compared with conventionally produced counterparts, and it was found that the L-PBF specimens exhibited superior corrosion and SCC resistance under tensile loading.
Article
Nanoscience & Nanotechnology
Wei Le, Zhongwei Chen, Kang Yan, Yanni Zhao, Haolan Zhang
Summary: The hot deformation behavior and microstructure evolution of SLM 718 alloy pre-precipitated with delta phase were studied. The results showed that the deformation parameters had a significant effect on the flow behavior of the alloy. The presence of the delta phase hindered the deformation process, causing accumulation of dislocations and resulting in fracture and bending of the delta phase.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Kaiyu Luo, Shanhui Li, Gang Xu, Seyed Reza Elmi Hosseini, Jinzhong Lu
Summary: The hot corrosion behaviors of directed energy deposited Inconel 718/Haynes 25 functionally graded materials (FGMs) coated with a molten salt mixture were investigated. The results showed that increasing the Haynes 25 content improved the hot corrosion resistance in the gradient direction due to changes in grain size and distribution. The microstructural evolution and its effects on hot corrosion resistance were also revealed.
Article
Materials Science, Multidisciplinary
Zhiping Sun, Wenqing Wu, Yongnan Chen, Zhanwei Yuan, Yongshuai Zhang, Xiping Guo
Summary: TiAl alloys have broad development prospects in the aerospace industry. Research shows that high Nb-containing TiAl alloys exhibit better hot corrosion resistance. Understanding microstructure evolution and hot corrosion mechanisms can provide a comprehensive assessment of alloy performance.
Article
Engineering, Mechanical
Dewen Niu, Xiao Zhang, Xudong Sui, Zhiqiang Shi, Xiaolong Lu, Cong Wang, Yanfang Wang, Junying Hao
Summary: High-entropy carbonitrides have excellent properties in friction and corrosion. The tribo-corrosion response of (CrNbTiAlV)CxNy coating was studied in 3.5 wt.% NaCl solution. The doping of carbon makes the coating structure dense. The coating with 40% carbon content has the best performance in terms of hardness, friction coefficient, and wear volume loss, effectively protecting the substrate in tribo-corrosion conditions.
TRIBOLOGY INTERNATIONAL
(2023)
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)