Article
Materials Science, Multidisciplinary
Dejian Sun, Guizhong Li, Linfei Guo, Ka Gao, Yang Gao, Lei Fan, Linan An
Summary: In this article, a novel hot oscillatory pressing (HOP) method was proposed to prepare PM superalloys, and the results showed that the oscillatory pressure could effectively inhibit the formation of prior particle boundaries (PPBs) and improve the mechanical properties of the superalloys. This study provides a promising technique for the development of superalloy fabrication.
MATERIALS CHARACTERIZATION
(2022)
Article
Materials Science, Multidisciplinary
Guizhong Li, Dejian Sun, Jiachen Kang, Yang Gao, Xuewei Yan, Qiancheng Gao, Ka Gao
Summary: The effect of hot oscillatory pressing (HOPing) temperature on the microstructure and tensile behavior of powder metallurgy superalloys was investigated. The results showed that as the HOPing temperature increased, the microstructure changed with larger, more uniform grain size, disappearance of pores and residual dendrites, and reduction in prior particle boundaries (PPBs) size. Tensile properties initially improved and then decreased, with the highest ultimate tensile strength and elongation achieved at 1160 degrees C. The improved tensile properties were attributed to reduced size and density of PPBs precipitates.
Article
Materials Science, Multidisciplinary
Huei-Sen Wang, Yen-Ling Kuo, Hou-Guang Chen, Chen-Ming Kuo, Chao-Nan Wei, Hui-Yun Bor, Chih-Chun Hsieh
Summary: This study employed hot isostatic pressing to bond directionally solidified and fine equixed grain hybrid structured rods. The results showed that the bonded samples had improved strength after heat treatment, with decreased grain size and volume fraction of carbides and γ-γ' phase. The distribution of nano- or sub-micro-sized carbides within the matrix and grain boundaries inhibited fracture accumulation during tensile tests, resulting in fractures mainly occurring in the directionally solidified piece.
MATERIALS CHARACTERIZATION
(2023)
Article
Chemistry, Physical
Qing Teng, Yin Xie, Shanshan Sun, Pengju Xue, Anping Long, Tingguang Wu, Chao Cai, Jianzheng Guo, Qingsong Wei
Summary: The microstructure and mechanical properties of nickel-based superalloy prepared by HIP are influenced by the preparation temperature, emphasizing the importance of parameter optimization for controlling the microstructure and mechanical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Wenzhe Zhou, Yusheng Tian, Dongyu Wei, Qingbiao Tan, Decheng Kong, Hua Luo, Wenmao Huang, Guoliang Zhu, Da Shu, Jiawei Mi, Baode Sun
Summary: The effects of HIP and THT methods on improving the properties of IN738 alloy were investigated. HIP reduced the porosity and residual stress of LPBF IN738-0.3C samples. THT achieved better yield strength, ultimate tensile strength, and elongation. These results can serve as a reference for suitable heat treatments of other AM precipitation-hardened Ni-based superalloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Nanoscience & Nanotechnology
Yaoxin Huo, Zhengguan Lu, Min Cheng, Jinping Fan, Junwei Qiao, Lei Xu, Ruipeng Guo, Rui Yang, P. K. Liaw
Summary: This study presents the first investigation on the dwell-fatigue behavior and damage mechanism of as-HIPed Ti-6Al-4V powder compact. The results show that the peak stress and stress ratio have significant effects on dwell fatigue behavior. A crack-initiation and propagation model based on soft-hard grain pairs has been proposed to explain the dwell-fatigue mechanism.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Engineering, Manufacturing
Weidong Wu, Junzhe Xin, Bin Hu, Rong Chen, Dengfeng Huang, Zhongxin Huang, Jiangtao Feng, Chun Du, Bin Shan
Summary: In this study, a novel powder-based hot isostatic pressing (PHIP) treatment was used to enhance the tensile strength of material extrusion PEEK. By optimizing material extrusion printing parameters, the interlayer adhesion and tensile strength were significantly improved. The improved mechanical properties were attributed to the improved molecular diffusion and crystallinity of PEEK. These findings offer a promising solution for enhancing the practical applications of material extrusion PEEK.
ADDITIVE MANUFACTURING
(2023)
Article
Materials Science, Multidisciplinary
Zonghong Qu, Pingxiang Zhang, Yunjin Lai, Qingxiang Wang, Jiaming Song, Shujin Liang
Summary: The influence of powder particle size on the microstructure of the powder metallurgy superalloy FGH97 was investigated. The results showed that fine powder led to limited plastic deformation, resulting in fewer boundaries and modest particle boundary decoration. On the other hand, medium-sized and coarse powder did not exhibit particle boundary. Therefore, medium-sized powder is the optimal choice.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Nanoscience & Nanotechnology
Zhibo Hao, Tian Tian, Xinggang Li, Yuhe Huang, Shiqing Peng, Qiang Zhu, Changchun Ge
Summary: This study investigated the effects of heat treatment on the microstructure and mechanical properties of a nickel-based superalloy prepared by LPBF. The results showed that both HIP and HT processes improved the alloy's structure and properties, while an increase in HIP temperature led to grain refinement and elimination of some structural defects.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Chemistry, Physical
Qingbiao Tan, Guoliang Zhu, Wenzhe Zhou, Yusheng Tian, Liang Zhang, Anping Dong, Da Shu, Baode Sun
Summary: This study investigates the precipitation, transformation, and coarsening of carbides in a high-carbon nickel-based superalloy using various microscopic observation techniques and thermodynamic modeling. The results show that a high carbon content leads to the formation of complex carbides, which transform into a different type of carbides and undergo coarsening after treatment. In addition, carbide particles of different sizes are distributed along grain boundaries and subgrain boundaries, and they affect the mechanical properties of the alloy.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Nanoscience & Nanotechnology
Derui Jiang, Yang Tian, Yuman Zhu, Shuai Huang, Aijun Huang
Summary: This study demonstrates the feasibility of using a core-shell approach combined with hot isostatic pressing (HIP) to improve the productivity of laser powder bed fusion (LPBF) process for producing Hastelloy-X (HX) components. The core-shell HX with HIP treatment shows a grain size gradient from shell to core, leading to better mechanical properties compared to the HX without the core-shell structure. Moreover, the core-shell approach significantly improves the LPBF production rate.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Nanoscience & Nanotechnology
Ali Rezaei, Ahmad Kermanpur, Ahmad Rezaeian, Mohsen Badrossamay, Ehsan Foroozmehr, Fazlollah Sadeghi, Jeongho Han, Tak Min Park
Summary: The study demonstrated that the use of hot isostatic pressing (HIP) effectively closed intrinsic pores and large contour defects in LPBF IN718, increasing relative density and reducing mechanical anisotropy at both room-and high-temperatures. Additionally, HIPing promoted the formation of nano-scale gamma ''/gamma'/gamma '' co-precipitates, leading to enhanced strengthening effects.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Chengtao Yu, Qunchang Wang, Minghui Chen, Fuhui Wang
Summary: FGH 97 alloy and its composite with TiC addition were prepared by spark plasma sintering. TiC particles were dissolved into the alloy matrix during ball milling, but precipitated out in-situ as MC solid solution with semi-coherent interface after sintering, resulting in a homogeneous and fine microstructure. After exposure to 900 degrees C for 300 h, the grain size only grew by 31%. The fine microstructure promoted selective oxidation of Al and ensured high oxidation resistance of the composite FT. The precipitated carbides increased oxidation resistance of FT and endowed its oxide scale with self-healing ability for long-term oxidation.
Article
Materials Science, Multidisciplinary
M. J. Carrington, D. G. McCartney, P. H. Shipway, D. A. Stewart
Summary: Tristelle 5183 (Fe-21%Cr-10%Ni-7%Nb-5%Si-2%C in wt%) is an alternative to cobalt-based alloys for wear resistant hardfacing applications. The gas atomised powder was consolidated using hot isostatic pressing (HIPing) at 1120 +/- 10 degrees C, resulting in a microstructure containing fcc gamma-Fe, NbC, and M7C3. After HIPing, a wide distribution of gamma-Fe grain sizes were found, with larger grains exhibiting sub-grain structures and smaller grains containing annealing twins. This study demonstrates the potential for HIPing hardfacing alloys to achieve a fine scale homogeneous microstructure.
MATERIALS CHARACTERIZATION
(2022)
Article
Metallurgy & Metallurgical Engineering
Xu Lei, Tian Xiaosheng, Wu Jie, Lu Zhengguan, Yang Rui
Summary: Inconel 718 alloy, known for its high-temperature resistance and mechanical properties, is widely used in aviation. However, traditional processes struggle with producing large and complex components, resulting in segregation and the formation of unwanted phases. Net-shape hot isostatic pressing (HIP) is a powder metallurgy technology that can produce components with desired microstructures, properties, and cost-effectiveness. This study focuses on the characterization of Inconel 718 pre-alloyed powder and the improvement of its mechanical properties through the suppression or elimination of prior particle boundaries (PPBs) formed during the HIP process.
ACTA METALLURGICA SINICA
(2023)
Article
Chemistry, Physical
Litao Chang, Hao Jin, Wenru Sun
JOURNAL OF ALLOYS AND COMPOUNDS
(2015)
Article
Nanoscience & Nanotechnology
Rui Fu, Fulin Li, Fajie Yin, Di Feng, Zhiling Tian, Litao Chang
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2015)
Article
Nanoscience & Nanotechnology
Litao Chang, Wenru Sun, Yuyou Cui, Rui Yang
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2017)
Article
Materials Science, Multidisciplinary
Litao Chang, Wenru Sun, Yuyou Cui, Rui Yang
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2017)
Article
Materials Science, Multidisciplinary
Litao Chang, M. Grace Burke, Fabio Scenini
Article
Materials Science, Multidisciplinary
Qingrong Xiong, Joseph D. Robson, Litao Chang, Jonathan W. Fellowes, Mike C. Smith
JOURNAL OF NUCLEAR MATERIALS
(2018)
Article
Materials Science, Multidisciplinary
Xin Wang, Shenglong Zhu, Zhengxian Li, Litao Chang, Qing Wu, Yusheng Zhang, Fuhui Wang
Article
Materials Science, Multidisciplinary
Litao Chang, Liberato Volpe, Yong Liang Wang, M. Grace Burke, Agostino Maurotto, David Tice, Sergio Lozano-Perez, Fabio Scenini
Article
Nanoscience & Nanotechnology
Litao Chang, Kudzanai Mukahiwa, Jonathan Duff, M. Grace Burke, Fabio Scenini
Summary: The results of the experiment showed a notable reduction in stress corrosion cracking susceptibility for machined cold-rolled 316L stainless steel heat-treated in high-temperature hydrogenated water. This reduction was attributed to recrystallization of ultrafine grains in the outer deformation layer of the machined surface, leading to decreased tensile residual stress and nano-indentation hardness.
SCRIPTA MATERIALIA
(2021)
Article
Materials Science, Multidisciplinary
Litao Chang, Kudzanai Mukahiwa, Liberato Volpe, Fabio Scenini
Summary: The oxidation mechanisms of 316L stainless steel in high-temperature hydrogenated water were found to be faster on machined surfaces compared to polished surfaces, due to the formation of a similar to 2 μm thick ultrafine-grained layer on the machined surfaces. This layer developed a more porous and fine-grained inner oxide than that on polished surfaces, leading to accelerated oxygen anions and metal cations diffusion through the oxide pores and grain boundaries.
Article
Materials Science, Multidisciplinary
Litao Chang, M. Grace Burke, Kudzanai Mukahiwa, Jonathan Duff, YongLiang Wang, Fabio Scenini
Summary: Cold-worked Type 304L/316L stainless steel specimens with varying martensite content were tested in high-temperature hydrogenated water to understand the role of martensite on stress corrosion crack initiation. The results showed that cold-rolled 304L with martensite required higher strain to induce SCC initiation compared to other cold-worked stainless steels. Mechanisms responsible for the different SCC initiation susceptibilities were discussed based on experimental observations.
Article
Materials Science, Multidisciplinary
Xiaoli Li, Litao Chang, Chengpeng Liu, Bin Leng, Xiangxi Ye, Fenfen Han, Xinmei Yang
Summary: The study found that long-time thermal aging affects the corrosion behavior of type 316H stainless steel in molten chloride salt, resulting in reduced weight loss and thinner Cr depleted region in the thermally-aged specimens. The mechanisms behind the different corrosion behaviors were discussed based on experimental observations.
Article
Materials Science, Multidisciplinary
Xiaoli Li, Bin Leng, Xiangxi Ye, Chengpeng Liu, Litao Chang, Xingtai Zhou
Summary: The corrosion behavior of nickel-based UNS N10003 alloy with different yttrium contents in molten fluoride salt environment was studied. The alloy containing 0.05% yttrium exhibited the least weight loss after an 800°C/1000-hour corrosion test. Microstructure and surface micro-chemistry analysis revealed the formation of a YF3 and Y2O3 mixed layer near the surface, which contributed to the superior corrosion resistance of this specific alloy in the molten salt environment.
Article
Materials Science, Multidisciplinary
Martin Bojinov, Timo Saario, Yanling Ge, Litao Chang, Zaiqing Que
Summary: The electrochemical behavior of LPBF 316L stainless steel was compared to wrought 316L in pressurized water, revealing slower corrosion rates for LPBF 316L, especially in the presence of dissolved hydrogen.
Article
Materials Science, Multidisciplinary
Tao Wu, Chengpeng Liu, Litao Chang, Hanxiao Wang, Lifeng Zhang, Xingtai Zhou
Summary: A microstructural investigation was conducted on the surface machined zone of 316 L stainless steel to understand the formation of its microstructure and grain refinement mechanisms. The results showed that the surface machined zone exhibited a gradient microstructure, with a topmost thin region characterized by a nano-crystalline structure containing dislocations, nano-twins, and stacking faults. The fine-grains in this region were preferentially oriented along the machining direction. Mechanisms such as temperature-promoted slip and lattice rotation were suggested to contribute to the formation of the nano-crystalline region.
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)