Article
Materials Science, Multidisciplinary
Tom McKenna, Charles Tomonto, Greg Duggan, Eoin Lalor, Seamus O'Shaughnessy, Daniel Trimble
Summary: As-built, SLM-printed Ti-6Al-4V parts have brittle microstructures due to the formation of metastable a'-phase martensite. Post-processing heat treatments are needed to alleviate residual stress and decompose the martensite. This research evaluates the effect of unconventional 'cyclical' heat treatment parameters on grain morphology, phase composition, and mechanical performance, and compares it to a typical lamellar microstructure.
MATERIALS & DESIGN
(2023)
Article
Engineering, Mechanical
Nan Jin, Zhenyu Yan, Yangwei Wang, Huanwu Cheng, Hongmei Zhang
Summary: The study investigates the relationship between microstructure and mechanical properties of titanium lattice materials fabricated by selective laser melting (SLM) with different heat treatments. The results show that the bending-dominated structure BCC is more sensitive to heat treatment conditions, with the optimal temperatures being 920 degrees C for BCC and 750 degrees C for FCC. A numerical simulation model was also established to depict the relationship between the mechanical properties of the base material and the lattice materials.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2021)
Article
Materials Science, Multidisciplinary
Seong Ho Lee, Jinyeong Yu, Seho Cheon, Jung Gi Kim, Taekyung Lee
Summary: This research compares the microstructure and microhardness of Ti-6Al-4V alloy fabricated by selective laser melting using electropulsing treatment and conventional furnace heat treatment. The results show that electropulsing treatment can eliminate columnar microstructures, refine beta-grains, and effectively improve the microstructural inhomogeneity.
METALS AND MATERIALS INTERNATIONAL
(2023)
Article
Engineering, Biomedical
Saurabh Kumar Gupta, Nagur Shahidsha, Sumit Bahl, Dhaval Kedaria, Sarat Singamneni, Prasad K. D. Yarlagadda, Satyam Suwas, Kaushik Chatterjee
Summary: By utilizing selective laser melting (SLM) and tailored heat treatment, it is possible to improve the ductility of additively manufactured bone plates, making them comparable to those made from wrought alloy. This has important implications for the fabrication of patient-specific metallic orthopedic devices without compromising their biomechanical performance.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2021)
Article
Metallurgy & Metallurgical Engineering
Wang Pei, Chen Feng-hua, J. Eckert, S. Pilz, S. Scudino, K. G. Prashanth
Summary: The study revealed that vanadium enriches around the boundary of alpha phases with increasing annealing temperature to 973 K, and alpha ' phases transform into alpha+beta at 973 K. The typical alpha' martensite microstructure transforms to fine-scale equiaxed microstructure at 973 K and significantly coarsens with increasing annealing temperature to 1273 K. The SLM Ti-6Al-4V alloy annealed at 973 K exhibits a well-balanced combination of strength and ductility.
JOURNAL OF CENTRAL SOUTH UNIVERSITY
(2021)
Article
Materials Science, Ceramics
Yuchao Song, Guangyu Ma, Fucheng Qiu, Oleksandr Stasiuk, Dmytro Savvakin, Orest Ivasishin, Xiaofeng Xu, Tuo Cheng
Summary: This study presents a cost-effective method for producing titanium matrix composites with in situ formed titanium boride whiskers. The method, called hydrogen-assisted blended elemental powder metallurgy (BEPM), involves simple press-and-sinter techniques without the need for hot deformation or hot pressing. The resulting composites show low porosity and uniform distribution of reinforcement particles, making them suitable for advanced applications.
CERAMICS INTERNATIONAL
(2022)
Article
Nanoscience & Nanotechnology
Jiankai Ma, Yashan Zhang, Junjie Li, Dingcong Cui, Zhijun Wang, Jincheng Wang
Summary: Forging-additive hybrid manufacturing technology combines the efficiency and cost advantages of traditional manufacturing with the flexibility and rapid prototyping advantages of additive manufacturing, providing an effective solution for efficient forming of large and complex components, with a focus on studying the microstructures and mechanical properties of the heat affected zone.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Dongdong He, Hui Wang, Weidong Huang, Xinxi Chen, Guofu Lian, Yu Wang
Summary: TiB + La2O3/Ti-6Al-4V composites were prepared using selective laser melting technology, and the effect of LaB6 content on the composite samples’ quality, microstructure evolution, and mechanical properties was investigated. The results showed that with increasing LaB6 content, the sample’s relative density decreased, TiB precipitates changed their structure, and the dislocations accumulated around the reinforcements, leading to enhanced tensile strength. Compared to pure Ti-6Al-4V sample, the addition of 3 wt% LaB6 significantly increased hardness, tensile strength, and reduced wear volume. This study demonstrated the potential of using LaB6 to improve the mechanical performance of titanium alloys in additive manufacturing.
Article
Engineering, Manufacturing
Qi-Dong Sun, Jie Sun, Kai Guo, Saad Waqar, Jiang-Wei Liu, Lei-Shuo Wang
Summary: This study investigated the effects of process parameters and heat treatment on the microstructure and mechanical properties of Ti-6Al-4V alloy fabricated using selective laser melting (SLM). By optimizing the parameters, a high-density high-strength Ti-6Al-4V alloy was successfully fabricated by SLM. Heat treatment further improved the mechanical properties of the alloy.
ADVANCES IN MANUFACTURING
(2022)
Article
Materials Science, Multidisciplinary
Deepak Sharma, Somashekhar S. Hiremath, Nagesha Bommanahalli Kenchappa
Summary: In this study, the porous structure of Euplectella aspergillum has been used as a model to mimic mechanical metamaterial. The metamaterials were fabricated using a selective laser melting process and tested under compressive loading conditions. The effect of heat treatment on the mechanical behavior and microstructure was also investigated. The results showed that heat treatment increased the ductility of the metamaterial due to the formation of beta-Ti phase and a decrease in residual stresses. Finite element simulation demonstrated that diagonal struts in the E. aspergillum-based metamaterial prevented global buckling and improved the strength by uniformly distributing the load.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Optics
Zhentao Wang, Shanglei Yang, Zeng Peng, Zihao Gao
Summary: In this study, the heat treatment of selective laser melting (SLM) Ti-6Al-4V samples with defects was investigated. The changes in microstructure, phase composition, hardness, and tensile properties were observed. The results showed that defects did not affect the overall changes in microstructure, hardness, and phase composition after heat treatment. However, significant changes were observed around two types of defects. The presence of defects led to the entry of hydrogen, resulting in changes in phase composition and a decrease in tensile properties.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Pankaj Kumar Verma, Unissa Nichul, Anil Kumar, Pawan Kumar, Vijay Hiwarkar
Summary: A titanium matrix composite with in situ-generated TiB whiskers in the Ti-6Al-4V matrix was fabricated by adding submicron TiB2 particles. The microstructural analysis revealed that the size of the TiB whiskers ranged from 25 nm to 40 nm in diameter and from 150 to 600 nm in length. The inclusion of TiB2 particles dramatically altered the microstructure and improved the wear performance.
Article
Materials Science, Multidisciplinary
Qipeng Wang, Jian Kong, Xiangkui Liu, Kewei Dong, Xinxiang Song, Yang Yang, Junqiang Xu, Xinsheng Chen
Summary: Low-temperature vacuum heat treatment can reduce thermal deformation in metals, and the Ti-6Al-4V alloy manufactured by selective laser melting shows high strength and good ductility after heat treatment at 550 degrees C for 4 hours. The precipitation of more beta phases and the presence of twins enhance the plasticity of the alloy, but higher temperatures can lead to coarser precipitated phases and decreased strength.
Article
Automation & Control Systems
Alexander Golyshev, Alexander Malikov, Anatoliy Orishich, Mikhail Gulov, Alexei Ancharov
Summary: Repetitively pulsed laser radiation was used to successfully obtain a metal-matrix composite based on Ti-6Al-4V-B4C, resulting in more uniform structures and improved mechanical properties. Compared to continuous radiation, the use of repetitively pulsed radiation along with the formation of TiB2, TiB, and TiC phases led to a 6-fold increase in wear resistance of the formed composite.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2021)
Article
Chemistry, Physical
Alessandro Carrozza, Giulio Marchese, Abdollah Saboori, Emilio Bassini, Alberta Aversa, Federica Bondioli, Daniele Ugues, Sara Biamino, Paolo Fino
Summary: This study focuses on the effect of different heat treatments on the Ti-6Al-4V alloy processed by electron beam melting (EBM). The results show that super beta-transus annealing reduces anisotropy generated by the EBM process and the aging treatment further improves the microstructure and mechanical properties of the alloy.
Article
Chemistry, Physical
Bin Liang, Zhihua Yang, Dechang Jia, Shu Guo, Qishuai Zhu, Xingqi Liao, Yang Miao, Qian Zhang, Yu Zhou
JOURNAL OF ALLOYS AND COMPOUNDS
(2017)
Article
Materials Science, Multidisciplinary
Bin Liang, Zhihua Yang, Yang Miao, Qishuai Zhu, Xingqi Liao, Quan Li, Zhuo Tian, Dechang Jia, Yu Zhou
Article
Materials Science, Ceramics
Yangshan Sun, Delong Cai, Zhihua Yang, Hailiang Li, Xingqi Liao, Dechang Jia, Yu Zhou
CERAMICS INTERNATIONAL
(2018)
Article
Materials Science, Ceramics
Bin Liang, Dechang Jia, Xingqi Liao, Qishuai Zhu, Qingqing Chen, Zhihua Yang, Feng Tian, Xiaoyun Li, Yu Zhou
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2018)
Article
Materials Science, Ceramics
Zhihua Yang, Daxin Li, Yiwei Hou, Xingqi Liao, Qishuai Zhu, Dechang Jia, Xiaoming Duan, Delong Cai, Shengjin Wang, Yu Zhou
CERAMICS INTERNATIONAL
(2019)
Article
Materials Science, Ceramics
Qian Li, Zhihua Yang, Xingqi Liao, Daxin Li, Delong Cai, Bo Niu, Peigang He, Xiaoming Duan, Dechang Jia, Yu Zhou
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2020)
Article
Materials Science, Multidisciplinary
Bao-Fu Qiu, Xiao-Ming Duan, Zhuo Zhang, Xing-Qi Liao, Zhi-Hua Yang, De-Long Cai, De-Chang Jia, Yu Zhou
Article
Materials Science, Ceramics
Mo Yan, Xiaoming Duan, Zhuo Zhang, Xingqi Liao, Xichen Zhang, Baofu Qiu, Zengyan Wei, Peigan He, Jiancun Rao, Xiaodong Zhang, Dechang Jia, Yu Zhou
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2019)
Article
Materials Science, Ceramics
Bin Liang, Xingqi Liao, Qishuai Zhu, Zhihua Yang, Dechang Jia, Yu Zhou
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2020)
Article
Engineering, Multidisciplinary
QiShuai Zhu, GaoYuan Wang, XingQi Liao, DaXin Li, ZhiHua Yang, DeChang Jia, XiaoMing Duan, PeiGang He, Yu Zhou
SCIENCE CHINA-TECHNOLOGICAL SCIENCES
(2020)
Article
Materials Science, Multidisciplinary
Bin Liang, Dechang Jia, Yang Miao, Qishuai Zhu, Xingqi Liao, Zhihua Yang, Yu Zhou
Article
Materials Science, Ceramics
Bin Liang, Zhihua Yang, Yang Miao, Quan Li, Qishuai Zhu, Xingqi Liao, Dechang Jia, Yu Zhou
CERAMICS INTERNATIONAL
(2017)
Article
Nanoscience & Nanotechnology
Ahmad Mirzaei, Peter D. Hodgson, Xiang Ma, Vanessa K. Peterson, Ehsan Farabi, Gregory S. Rohrer, Hossein Beladi
Summary: This study investigated the influence of parent austenite grain refinement on the intervariant boundary network in a lath martensitic steel. It found that refining the parent austenite grain led to a decrease in the fraction of certain boundaries in the martensite and an increase in the connectivity of low energy boundaries, ultimately improving the impact toughness.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
N. L. Church, C. E. P. Talbot, L. D. Connor, S. Michalik, N. G. Jones
Summary: Metastable beta Ti alloys based on the Ti-Nb system have attracted attention due to their unique properties. However, the unstable cyclic behavior of these alloys has hindered their widespread industrial use. Recent studies have shown that internal stresses, including those from dislocations, may be responsible for this behavior. This study demonstrates that inter-cycle thermal treatments can mitigate the unstable cyclic behavior, providing a significant breakthrough in our understanding of Ti-Nb superelastic materials.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Di Zhao, Chenchen Zhao, Ziyang Xiu, Jiuchun Yan
Summary: This study proposes a novel strategy for achieving the bonding of SiC ceramic and Al alloy using ultrasound. The ultrasound promotes the dissolution of Al into the solder, activating the solder and triggering the interfacial reaction between SiC ceramic and solder. With increasing ultrasonic duration, the bonding between SiC and Al transitions from partial to full metallurgical bonding.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Kang Du, Yang Zhang, Guangda Zhao, Tao Huang, Liyuan Liu, Junpeng Li, Xiyu Wang, Zhongwu Zhang
Summary: This paper systematically investigated the evolution of microstructure in Fe-Ni-Co-Al polycrystalline alloys and its effects on mechanical properties. The results revealed that the migration of grain boundaries in different processes is driven by different factors, which impacts the grain orientation and precipitate formation. In the process of directional recrystallization, grains with specific orientations grow in the grain boundary region and form the dominant orientation, while grains with lower migration rate form the minor orientation. The alloy produced through directional recrystallization exhibited good recoverable strain and superelastic strain, while the alloy produced through solid solution treatment showed no evident superelastic behavior.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Edohamen Awannegbe, Liang Chen, Yue Zhao, Zhijun Qiu, Huijun Li
Summary: This study employed laser metal deposition to additively manufacture Ti-15Mo wt% alloy, and subsequently subjected it to post-fabrication uniaxial thermomechanical processing. The results showed that different zones in the microstructure remained after processing, and deformation mechanisms mainly involved slip and martensite formation. The compressive mechanical properties were found to be dependent on strain rate, with higher flow stress and compressive strength observed at higher strain rates. Grain structure homogenisation was not achieved, leading to anisotropic tensile properties.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Reza Khatib Zadeh Davani, Enyinnaya George Ohaeri, Sandeep Yadav, Jerzy A. Szpunar, Jing Su, Michael Gaudet, Muhammad Rashid, Muhammad Arafin
Summary: This research aims to investigate the effect of roughing and finishing reductions on crystallographic texture. The results show significant heterogeneity in the centerline region, with higher intensity of certain textures. Drop Weight Tear Test indicates that steel specimens with lower and medium reductions exhibit superior low-temperature impact toughness compared to steel with higher reductions. The electrochemical hydrogen charging experiments confirm the presence of internal hydrogen cracks only in steel with lower and medium reductions.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Flavio De Barbieri, Denis Jorge-Badiola, Rodrigo Allende, Karem Tello, Alfredo Artigas, Franco Perazzo, Henry Jami, Juan Perez Ipina
Summary: This study examines the effect of Cr additions on the mechanical behavior of TWIP steel at temperatures ranging from 25°C to 350°C. The results indicate that different temperature-dependent strengthening mechanisms, including mechanical twinning, Dynamic Strain Aging, and slip bands, are at play. The stacking fault energy (SFE) influences the percentage of mechanical twinning, which in turn affects the strain hardening rate.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Hanlin Peng, Siming Huang, Ling Hu, Bingbing Luo, Liejun Li, Ian Baker
Summary: This study explores the weldability, microstructures, and mechanical properties of two L1(2)-nanoparticle-strengthened medium-entropy alloys after electron beam welding (EBW). The results show that strong yet ductile defect-free joints were produced, with larger grain sizes in the fusion zones compared to the heat-affected zones and base materials. Both EBWed MEAs exhibited high yield strengths, high ultimate tensile strengths, and good fracture strains at 77 K. The V-doping improved the cryogenic mechanical properties of the TMT MEA.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Yongxin Wang, Lei Chen, Lizi Shao, Shuo Hao, Motomichi Koyama, Xingzhou Cai, Xiaocong Ma, Miao Jin
Summary: This study investigated the tensile deformation behavior of an Mn-N bearing lean duplex stainless steel with metastable austenite. The results showed that the strain rate had significant influence on the work hardening, strain-induced martensitic transformation, and fracture mechanism.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Jong Woo Won, Seulbi Lee, Hye-Jeong Choe, Yong-Taek Hyun, Dong Won Lee, Jeong Hun Lee
Summary: Cold-rolled pure titanium showed improved sheet formability after undergoing cryogenic-deformation treatment. This treatment increased the thinning capability of the titanium and suppressed cracking during sheet forming. The formation of twins during deformation contributed to high thinning capability and increased strength through grain refinement and dislocation accumulation.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Handong Li, Lin Su, Lijuan Wang, Yanbin Jiang, Jiahui Long, Gaoyong Lin, Zhu Xiao, Yanlin Jia, Zhou Li
Summary: Homogenization heat treatment is a key procedure in controlling the second phase, enhancing composition uniformity, and workability of as-cast Cu-15Ni-8Sn alloy. This study found that electropulsing treatment (EPT) can significantly reduce treatment temperature and time, improve elongation and overall mechanical properties of the alloy.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Yuxuan Wang, Juntao Zou, Lixing Sun, Yunfei Bai, Zhe Zhang, Junsheng Cheng, Lin Shi, Dazhuo Song, Yihui Jiang, Zhiwei Zhang
Summary: A novel mechanical-heat-electricity synergistic method was proposed to enhance the mechanical properties of Cu-15Sn-0.3Ti alloy by forming annealing twins (ATs). The combination method of Rotary swaging (RS) and Electric pulse treatment (EPT) successfully induced recrystallization and refinement of the microstructure, leading to a significant increase in the strength of the alloy within a short time.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Zhiyi Ding, Jiangtao Xie, Tong Wang, Aiying Chen, Bin Gan, Jinchao Song
Summary: This study demonstrated the Ta-induced strengthening of CoCrNi-AlTi MEAs using nanoscale heterogeneous coherent precipitates. The addition of Ta and aging treatments significantly enhanced the mechanical properties of the alloy, including yield strength, ultimate tensile strength, and elongation.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Z. Y. You, Z. Y. Tang, B. Wang, H. W. Zhang, P. Li, L. Zhao, F. B. Chu, H. Ding
Summary: The mechanical properties and microstructural evolution of C-doped TRIP-assisted HEA under dynamic loading conditions were systematically investigated in this study. The results showed that dynamic tensile deformation led to an increase in yield strength and a decrease in ultimate tensile strength, with a trend towards increased total elongation. The primary deformation mechanisms shifted from TRIP and TWIP effects to deformation twinning and dislocations. The presence of carbides formed through C-doping hindered dislocation slip and promoted the activation of multiple twinning systems.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Feng Qin, Feihu Chen, Junhua Hou, Wenjun Lu, Shaohua Chen, Jianjun Li
Summary: Plastic instability in strong multilayered composites is completely suppressed by architecting nanoscale BCC Nb crystalline-amorphous CuNb interfaces.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
