Article
Materials Science, Coatings & Films
Erfan Maleki, Nasim Maleki, Alborz Fattahi, Okan Unal, Mario Guagliano, Sara Bagherifard
Summary: Shot peening is a surface treatment technique used to improve the mechanical properties of metallic materials through inducing surface nanocrystallization. The nanostructured stainless steel samples showed significant enhancements in strength and fatigue behavior, along with increased enzymatic activity, indicating potential applications in biochemical and biomedical fields.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Shoufa Liu, Moslem Tayyebi, Amir Hossein Assari, Adelajda Polkowska, Sebastian Lech, Wojciech Polkowski
Summary: The purpose of this paper is to study the microstructural evolution and mechanical properties of a Ni/Ti laminated composite produced by a cross-accumulative roll bonding (CARB) method. It was found that there was strong bonding between the layers without voids or delamination. Plastic instabilities occurred with an increase in CARB passes, leading to the formation of wavy-like interfaces. The mechanical properties improved with increased CARB passes due to strong interfaces and grain refinement.
METALS AND MATERIALS INTERNATIONAL
(2023)
Article
Engineering, Civil
Mohammad Javad Sohrabi, Hamed Mirzadeh, Milad Roostaei, Oliver Renk, Abdol Reza Geranmayeh, Reza Mahmudi
Summary: The effects of cold rolling, subsequent continuous heating, and aging on the microstructure and tensile properties of AISI 904L superaustenitic stainless steel were studied. Cold rolling led to high strength but reduced ductility in subsequent tensile testing. Recrystallization and fine grain size were observed upon continuous heating, accompanied by the precipitation of fine Cr-Mo-rich sigma-phase. Grain refinement during thermomechanical processing significantly improved the yield stress, but deviations from the Hall-Petch relation were observed due to the precipitation of intragranular sigma-phase, affecting the elongation to failure.
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2023)
Article
Engineering, Biomedical
Maria Watroba, Wiktor Bednarczyk, Jakub Kawalko, Piotr Bala
Summary: The study investigated the microstructure, crystallographic texture, phase composition, and mechanical properties of a Zn-3Ag-0.5Mg alloy processed through combined hot extrusion and cold rolling, followed by short-time heat treatment. It was found that controlling processing conditions and annealing temperature successfully addressed the brittleness issue in Zn alloys, with the most promising results obtained after 50% cold rolling reduction and 5 minutes of annealing.
BIOACTIVE MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
He Zhang, Wen-Xin Wang, Fang Chang, Chuan-Lu Li, Shi-Li Shu, Zhi-Fa Wang, Xue Han, Qian Zou, Feng Qiu, Qichuan Jiang
Summary: The study demonstrates that adding trace in situ TiC nanoparticles into 40Cr steel can significantly improve its mechanical properties, including yield strength, tensile strength, fracture strain, and impact toughness. The enhancement is mainly attributed to fine grain strengthening, thermal mismatch strengthening, and second phase strengthening.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Faraz Deirmina, Paul A. Davies, Nikhil Dixit, Raveendra Siriki, Massimo Pellizzari
Summary: By reducing the carbon content, the modified grade of steel shows improved performance in laser powder bed fusion manufacturing process, reducing the risk of cracking, and achieving similar hardness and strength through proper tempering treatment.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Lanzheng Kang, Xue Mi, Xiaofeng Zhang, Long Xin, Yonghao Lu, Tetsuo Shoji
Summary: The microstructure of alloy 600MA was investigated after surface mechanical attrition treatment (SMAT) with different durations. The results showed that grain refinement and coarsening occurred with increasing SMAT time. During grain refinement, the formation of dislocation walls or cells led to the development of ultrafine-laminated structures containing twin boundaries and low angle grain boundaries. The ultrafine-laminated structures were further subdivided into ultrafine-grained structures with random orientations due to the development of dislocation arrays. During grain coarsening, dispersed element concentration still existed, but the fraction of low angle grain boundaries, twin boundaries, and dislocation density decreased while the fraction of high angle grain boundaries increased.
MATERIALS CHARACTERIZATION
(2023)
Article
Engineering, Mechanical
Fuat Kara, Yilmaz Kucuk, Onur Ozbek, Nursel Altan Ozbek, Mustafa Sabri Gok, Emre Altas, Ilyas Uygur
Summary: Cryogenic treatment, applied to tool steels, enhances hardness and microstructure, and reduces friction coefficient and wear rate. It was found that deep cryogenic treatment showed the most significant improvement in these properties.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Zhizhi Wang, Xiaomei Gu, Haijun Pan
Summary: A novel cyclic quenching process was proposed to refine the microstructure and improve the mechanical properties of 18CrNiMo7-6 steel. The results showed that the cyclic quenching treatment led to a finer and more uniform distribution of average austenite, and significantly increased the ultimate tensile strength, total elongation, and hardness value of the steel. Multi-cycle treatment played an important role in enhancing the mechanical properties of the steel.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Materials Science, Multidisciplinary
Junjie Sun, Hao Wang, Bin Xu, Long Jiang, Shengwu Guo, Xuejiao Sun, Dewen Yu, Feng Liu, Yongning Liu
Summary: A new strategy is proposed to enhance the toughness of high-strength steel at low temperatures by designing an ultrafine-grained ferrite/martensite layered structure. The resulting structure exhibits exceptional cryogenic impact energy while maintaining high strength, thanks to the high fraction of martensite and strong strain hardening. Plastic deformation and crack propagation mechanisms contribute to the improved toughness, and grain refinement plays a role as well.
Article
Chemistry, Physical
Litao Liu, Bin Fu, Yanhui Guo, Liqun Wei
Summary: In this study, a multi-step cyclic rolling and intercritical annealing process was proposed for dual-phase steel, which resulted in a more uniform distribution of ferrite-martensite compared to the single-step process, leading to improved ductility.
Article
Nanoscience & Nanotechnology
Maryam Soleimani, Hamed Mirzadeh
Summary: Cross rolling and intercritical annealing is proposed as an alternative processing route for dual-phase steels, resulting in refined ferrite grains and evenly distributed martensite islands. This processed low-carbon steel exhibits improved strength-ductility balance, higher hardness, and greater work hardening exponent.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
G. J. Zhang, Q. G. Zhang, X. G. Wang, M. Sun, J. F. Yang, T. Hao, G. Li, H. Wang, J. G. Liu, Q. F. Fang, X. P. Wang
Summary: In this study, a newly developed equal channel angular pressing (ECAP) route BC-UD2 was used to extrude Fe9Cr1.5W0.7Si ferrite/martensitic steel, and the effect of microstructural evolution on the internal friction (IF) behavior was systematically investigated. The microstructural characterization revealed a transformation from an initial ferrite/martensitic structure to a fine laminar structure with a roughly 45 degree inclination to the extrusion direction (ED), accompanied by the evolution of texture. The dissolution of M23C6 and MX phases after extrusion led to a decrease in the Zener-Smith dragging force. The correlation between microstructure characterization results and IF behavior demonstrated the accuracy and reliability of the IF technique for studying the recrystallization behavior of structural materials in nuclear reactors.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2023)
Article
Chemistry, Physical
Jee-Hyun Kang, Young-Gun Ko
Summary: This study compares steel sheets containing 0.18 wt % C deformed by differential speed rolling (DSR) and equal speed rolling (ESR), and finds that DSR is more effective in achieving grain refinement and microstructure homogeneity, resulting in significant increase in hardness and strength through grain boundary strengthening.
Article
Chemistry, Physical
Carlos Alberto Botero, Aydin Selte, Markus Ramsperger, Giulio Maistro, Andrey Koptyug, Mikael Backstrom, William Sjostrom, Lars-Erik Rannar
Summary: Highly alloyed cold work tool steel Uddeholm Vanadis 4 Extra manufactured via electron beam melting (EBM) technique exhibited excellent hardness, compressive strength, and abrasive wear properties. Ductility was further increased after hot isostatic pressing (HIP) treatment.
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)