Article
Engineering, Mechanical
Ahmed Azeez, Viktor Norman, Robert Eriksson, Daniel Leidermark, Johan Moverare
Summary: Understanding crack growth behavior is crucial for accurate prediction of fatigue lives. Testing out-of-phase thermomechanical fatigue crack propagation on FB2 steel in high-temperature steam turbine sections showed the impact of crack closure on growth rate. The study also found that crack growth rate is mainly controlled by the minimum temperature of the cycle, and finite element models with stationary sharp cracks can capture crack closure behavior.
INTERNATIONAL JOURNAL OF FATIGUE
(2021)
Article
Materials Science, Multidisciplinary
Igor Litovchenko, Kseniya Almaeva, Nadezhda Polekhina, Sergey Akkuzin, Valeria Linnik, Evgeny Moskvichev, Vyacheslav Chernov, Maria Leontyeva-Smirnova
Summary: The effect of high-temperature thermomechanical treatment on the microstructure and mechanical properties of 12% chromium ferritic-martensitic steel is investigated. It is found that this treatment leads to the formation of a pancake-like grain structure and increases the dislocation density. The mechanical properties, such as yield strength and elongation, are also affected by the treatment.
Article
Nanoscience & Nanotechnology
Peng Yin, Wei Zhang, Shen Guo, Jianbin Wen, Guodong Zhang, Fei Xue, Yanfen Zhao, Changyu Zhou
Summary: In this study, TMF tests were conducted to investigate the cyclic deformation and damage mechanisms of P92 steel under different strain rates. The results showed that increasing strain rate significantly improved fatigue life, with OP-TMF leading to more severe damage compared to IP-TMF. The presence of dynamic strain ageing (DSA) was found to be dependent on strain rate, fatigue cycle, and phase angle, affecting fatigue life in combination with fatigue cracks, creep voids, and oxidation.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Nanoscience & Nanotechnology
Shohei Ueki, Yoji Mine, Xinyu Lu, Yu Lung Chiu, Paul Bowen, Kazuki Takashima
Summary: The study examined strain accumulation ahead of the fatigue crack tip in the martensite lath of a medium-carbon steel using a 3D-EBSD technique. Results showed that the geometrical anisotropy and distribution of martensite laths play a dominant role in the resistance to fatigue crack propagation in martensitic carbon steel.
SCRIPTA MATERIALIA
(2021)
Article
Engineering, Mechanical
Jingwei Zhao, Bingbing Li, Gang Chen, Takamoto Itoh, Xu Chen
Summary: Fatigue tests on 316LN stainless steel showed that the introduction of tensile strain hold had a more deleterious effect on TMF performance, and an inelastic relaxation strain rate is more appropriate for characterizing creep damage.
INTERNATIONAL JOURNAL OF FATIGUE
(2022)
Article
Engineering, Multidisciplinary
Zhan JianMing, Bi HongYun, Li MouCheng
Summary: The research found that increasing the maximum temperature and using synthetic exhaust gas both decrease the thermal fatigue life of 441 ferritic stainless steel, increase elongation, and grain size.
SCIENCE CHINA-TECHNOLOGICAL SCIENCES
(2022)
Article
Chemistry, Physical
Xiaogang Li, Junfeng Nie, Xin Wang, Kejian Li, Haiquan Zhang
Summary: The formation and evolution of microstructures at the Ni/Fe interface in dissimilar metal weld were investigated in this study. Layered martensitic structures were observed at the interface after welding and post-weld heat treatment. The study clarified the formation of interfacial martensite layer during welding and discussed its evolution during post-weld heat treatment. The findings showed that the Ni/Fe interface structures consisted of quenched martensite layer and partially mixed zone after welding, and further evolved to a double-layered structure of tempered martensite and quenched martensite during post-weld heat treatment.
Correction
Materials Science, Multidisciplinary
Godwin Kwame Ahiale, Won-Doo Choi, Seungyon Cho, Yi-Hyun Park, Young-Bum Chun, Yong-Jun Oh
Summary: Changes in the LCF behavior of ARAA steel with trace amount of Zr were observed in the temperature range of 573 to 873 K. The fatigue lifetime decreased significantly as the temperature increased from 573 to 823 K, but remained similar between 823 and 873 K. The deterioration in tensile properties at 823 and 873 K was attributed to rapid cyclic softening and local oxidation at surface slip bands.
METALS AND MATERIALS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Huan Yan, Xiang Liu, Lingfeng He, James Stubbins
Summary: In this experiment, the microstructure evolution and hardening mechanism of Fe-9Cr F/M steel T91 under neutron irradiation in different temperature ranges were studied. The results show significant coarsening of Ni/Si/Mn clusters and fast coalescence of dislocation loops at high temperatures.
JOURNAL OF NUCLEAR MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Aya Matsushita, Yoji Mine, Kazuki Takashima
Summary: The addition of nanotwin bundles in 304 metastable austenitic stainless steel enhances fatigue crack growth resistance by inhibiting brittle twin boundary separation and promoting detwinning and martensite formation during crack propagation.
SCRIPTA MATERIALIA
(2021)
Article
Engineering, Mechanical
Mikael Segersall, Dunyong Deng
Summary: The study reveals that there is no significant difference in fatigue lives between in-phase and out-of-phase thermomechanical fatigue of a single-crystal superalloy, with localized deformation bands being the main deformation mechanism and crack initiation preferred in these bands. Other TMF mechanisms, such as recrystallization and oxidation, are also discussed.
INTERNATIONAL JOURNAL OF FATIGUE
(2021)
Article
Materials Science, Multidisciplinary
Quanqiang Shi, Wei Yan, Yanfen Li, Naiqiang Zhang, Yiyin Shan, Ke Yang, Hiroaki Abe
Summary: The oxidation behavior of two Ferritic/Martensitic (F/M) steels, SIMP steel and P91 steel, was studied in high temperature and high pressure water environment. It was found that SIMP steel showed better oxidation resistance than P91 steel, possibly due to differences in microstructure.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Nadezhda Polekhina, Valeria Linnik, Igor Litovchenko, Kseniya Almaeva, Sergey Akkuzin, Evgeny Moskvichev, Vyacheslav Chernov, Mariya Leontyeva-Smirnova, Nikolay Degtyarev, Kirill Moroz
Summary: In this study, the effect of high-temperature thermomechanical treatment (HTMT) on the microstructure and mechanical properties of low-activation reactor steel EK-181 was investigated. The results showed that HTMT can refine the steel structure and improve its yield strength and impact toughness.
Article
Engineering, Mechanical
Ahmed Azeez, Robert Eriksson, Viktor Norman, Daniel Leidermark, Johan Moverare
Summary: Exploring crack growth behavior is crucial for accurate fatigue life predictions. In this study, cracked specimens were tested under strain-controlled out-of-phase thermomechanical fatigue conditions. Higher minimum temperature resulted in faster crack growth rates, while the addition of dwell times showed no significant effects. Crack closure was observed in all tests, and the addition of dwell times and change in minimum temperature had little to no effect on crack closure stresses.
INTERNATIONAL JOURNAL OF FATIGUE
(2022)
Article
Chemistry, Physical
Mingyu He, Hongjun Kang, Shouyuan Lin, Yanyan Liu, Peng Zhang, Wei Qin, Xiaohong Wu
Summary: In this study, FeCrNiMnAl coating with high binding force and dimensional stability was prepared on F/M by laser cladding, and its high-temperature oxidation evolution behavior was first reported. The results showed that the FeCrNiMnAl coating greatly improved the oxidation resistance of F/M, attributed to the formation of Al2O3 and Mn3O4 gradient films in the coating.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Metallurgy & Metallurgical Engineering
G. S. Deshmukh, M. L. Prasad, D. R. Peshwe, J. Ganesh Kumar, M. D. Mathew, G. Amarendra
TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS
(2016)
Article
Materials Science, Multidisciplinary
Aritra Sarkar, A. Nagesha, R. Sandhya, M. D. Mathew
HIGH TEMPERATURE MATERIALS AND PROCESSES
(2016)
Article
Nanoscience & Nanotechnology
Lakshmiprasad Maddi, G. S. Deshmukh, A. R. Ballal, D. R. Peshwe, R. K. Paretkar, K. Laha, M. D. Mathew
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2016)
Article
Metallurgy & Metallurgical Engineering
M. D. Mathew, Naveena, J. Ganesh Kumar
TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS
(2016)
Article
Materials Science, Multidisciplinary
Preeti Verma, Joysurya Basu, N. C. Santhi Srinivas, Vakil Singh
MATERIALS CHARACTERIZATION
(2017)
Article
Engineering, Multidisciplinary
R. S. Rajpurohit, N. C. Santhi Srinivas, S. R. Singh, V. Singh
INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING
(2018)
Article
Materials Science, Multidisciplinary
T. Sakthivel, K. S. Chandravathi, K. Laha, M. D. Mathew
MATERIALS AT HIGH TEMPERATURES
(2019)
Article
Acoustics
Vaibhav Pandey, J. K. Singh, K. Chattopadhyaya, N. C. Santhi Srinivas, Vakil Singh
Article
Materials Science, Multidisciplinary
Jibin T. Philip, Chacko Preno Koshy, M. D. Mathew
MATERIALS RESEARCH EXPRESS
(2019)
Article
Materials Science, Multidisciplinary
Lakshmiprasad Maddi, Atul Ramesh Ballal, Dilip Ramkrishna Peshwe, M. D. Mathew
HIGH TEMPERATURE MATERIALS AND PROCESSES
(2020)
Article
Nuclear Science & Technology
M. D. Mathew
Summary: Global warming is caused by the uncontrolled emissions of greenhouse gases, leading to a rise in the average temperature of the Earth's climate system. Nuclear power is a low carbon energy source that plays a significant role in low carbon economy and green energy grid. New innovations in nuclear power are making it a more affordable and attractive energy option.
PROGRESS IN NUCLEAR ENERGY
(2022)
Editorial Material
Metallurgy & Metallurgical Engineering
Chacko Preno Koshy, M. D. Mathew, Satish Vasu Kailas
TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS
(2023)
Article
Materials Science, Coatings & Films
Jibin T. Philip, Chacko Preno Koshy, M. D. Mathew, Basil Kuriachen
TRIBOLOGY-MATERIALS SURFACES & INTERFACES
(2019)
Proceedings Paper
Engineering, Manufacturing
Dipika R. Barbadikar, S. Vincent, Atul R. Ballal, Dilip R. Peshwe, M. D. Mathew
INTERNATIONAL CONFERENCE ON RECENT ADVANCES IN MATERIALS & MANUFACTURING TECHNOLOGIES
(2018)
Proceedings Paper
Materials Science, Multidisciplinary
M. D. Mathew
MECHANICAL AND CREEP BEHAVIOR OF ADVANCED MATERIALS
(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)