Article
Engineering, Mechanical
Vitor Nascimento, Caina Bemfica, Emmanuel Fessler, Jose Alexander Araujo, Fabio Castro
Summary: This study investigates the effects of high temperature on the fatigue behavior of forged Inconel 718 under axial/torsional loading conditions. The results show that the fatigue lives at high temperature were longer compared to room temperature tests. The torsion tests exhibited the longest fatigue lives. The cyclic plasticity model proposed in this study successfully described the stress-strain behavior of the material under different loading conditions and temperatures.
THEORETICAL AND APPLIED FRACTURE MECHANICS
(2022)
Article
Engineering, Mechanical
Jean-Briac le Graverend
Summary: A phenomenological model is proposed to predict both monotonic and cyclic softening in Inconel 718 superalloy at 650℃. Crystal-plasticity finite-element simulations are performed to validate the model and gain insights on the ratcheting phenomenon.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Engineering, Mechanical
Caina Bemfica, Vitor Nascimento, Emmanuel Fessler, Jose Alexander Araujo, Fabio Castro
Summary: This study investigates the fatigue and cyclic plasticity behavior of SLM Inconel 718. It was found that intrinsic defects related to the manufacturing process did not induce premature initiation of fatigue cracks. The fatigue crack propagation mechanism of SLM Inconel 718 depends on the loading path and temperature. The fatigue endurance of SLM Inconel 718 is inferior to its forged counterpart.
INTERNATIONAL JOURNAL OF FATIGUE
(2022)
Article
Engineering, Mechanical
Michal Bartosak, Marko Nagode, Jernej Klemenc, Karel Doubrava, Domen Seruga
Summary: This article proposes a new approach for modeling the stress-strain response of the Inconel 718 super alloy under isothermal Low-Cycle Fatigue loading, utilizing the Prandtl operator approach with modifications to simulate strain range dependent cyclic softening. The introduced modifications maintain the advantages of the Prandtl operators and enhance the simulation capabilities for complex nonlinear mechanical behavior, as demonstrated in various strain controlled tests at 500 C.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2022)
Article
Engineering, Mechanical
Mohammad S. Dodaran, Muztahid Muhammad, Nima Shamsaei, Shuai Shao
Summary: This study investigates the fatigue crack initiation mechanism in additively manufactured Inconel 718 alloy. The results show that unlike other alloys, fatigue cracks in IN-718 often initiate from persistent slip bands. A slip strength evolution law based on free slip distance is proposed to model the strain distribution in IN-718. The locations and lives for crack initiation can be calculated using a strain contrast criterion. The study also finds that both slip distance and shear stress affect strain localization and crack initiation behavior.
INTERNATIONAL JOURNAL OF FATIGUE
(2022)
Article
Materials Science, Multidisciplinary
Jonathan M. Hestroffer, Marat Latypov, Jean-Charles Stinville, Marie-Agathe Charpagne, Valery Valle, Matthew P. Miller, Tresa M. Pollock, Irene J. Beyerlein
Summary: This study investigates the evolution of intragranular lattice rotations and slip activity in a high performance, polycrystalline face centered cubic material during monotonic and cyclic loading using a combination of in-situ high-resolution digital image correlation (HR-DIC), Heaviside-DIC method (H-DIC), and crystal plasticity finite element (CPFE). The results show that most grains develop intragranular lattice rotation gradients that span the grain, regardless of their size and lattice orientation. The analysis of slip lines reveals agreement in the active slip systems and changes in local slip activity across individual grains. The findings suggest that deforming grains are divided into sub-granular regions of uniform lattice rotation, most often associated with one or two active slip systems.
Article
Materials Science, Multidisciplinary
M. A. Charpagne, J. M. Hestroffer, A. T. Polonsky, M. P. Echlin, D. Texier, V. Valle, I. J. Beyerlein, T. M. Pollock, J. C. Stinville
Summary: This study investigates the slip localization behavior of the polycrystalline nickel base superalloy Inconel 718 during monotonic tensile loading at room temperature in relation to the 3D microstructure. Statistical analyses revealed strong correlations between slip band locations and specific microstructure configurations, with over half of the slip bands emanating from triple junction lines. Crystal plasticity finite elements calculations were performed on the experimental microstructure to identify the characteristics of slip activity in different microstructure regions.
Article
Engineering, Mechanical
G. M. J. Almeida, R. A. Cardoso, G. Chassaing, S. Pommier, J. A. Araujo
Summary: This study investigated the influence of cyclic normal contact load on the fretting fatigue behavior of the Inconel 718 alloy at different temperatures. Experimental results indicated that cyclic normal contact load had a beneficial effect on fatigue life. The friction coefficient did not significantly differ between constant and cyclic contact load conditions but was reduced at elevated temperature. The life estimate approaches used in this study yielded satisfactory results.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Engineering, Mechanical
Duo Zhang, Heng Li, Xiaoxi Guo, Yanfeng Yang, Xudong Yang, Zhenyong Feng
Summary: This study investigates the influence of size effect on the fracture of cross-scaled components and focuses on Inconel 718 superalloy cross-scaled foils. Through experiments and modeling, the fracture mechanism and the relationship between fracture strain, fracture stress, and t/d are revealed. In addition, a fracture threshold scattering model considering random textures is established, providing a theoretical basis for the process design of cross-scaled components.
INTERNATIONAL JOURNAL OF PLASTICITY
(2022)
Article
Engineering, Mechanical
Mingwei Xie, Gang Chen
Summary: This study investigated the mechanical response of Sn-based lead-free SAC305 solder under thermomechanical cyclic loading, developed a crystal plasticity model for prediction, and analyzed the cyclic softening behavior of the solder.
INTERNATIONAL JOURNAL OF PLASTICITY
(2022)
Article
Materials Science, Multidisciplinary
Xiaoming Yin, Xun Li, Yihang Liu, Daxi Geng, Deyuan Zhang
Summary: This study proposes an ultrasonic peening milling (UPM) technology that introduces ultrasonic impact to the machined surface during end milling. The results show that UPM can improve the surface quality, reduce surface defects, and create thicker stress-affecting layers, leading to a 16.1 times increase in the fatigue life of Inconel 718 compared to conventional milling.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Engineering, Mechanical
D. Infante-Garcia, A. Diaz-Alvarez, R. Belda, J. Diaz-Alvarez, J. L. Cantero, E. Giner, M. H. Miguelez
Summary: This study focuses on analyzing the influence of different machining factors on the fretting fatigue behavior of Inconel 718. Fretting fatigue tests were conducted using specimens with various manufacturing process parameters, revealing the significant impact of machining parameters, particularly tool wear, on the fatigue lifetime of Inconel 718. Furthermore, residual stresses measured along the direction of fatigue load have proven to be a crucial indicator of fretting fatigue behavior, while the influence of surface roughness is relatively weaker.
INTERNATIONAL JOURNAL OF FATIGUE
(2022)
Article
Materials Science, Multidisciplinary
Marco Boecker, Harish Ramesh Babu, Sebastian Henkel, Mario Raddatz, Uwe Gampe, Horst Biermann
Summary: The planar-biaxial thermo-mechanical fatigue behavior of nickel-base superalloy Inconel 718 was studied under selected loading conditions, and the deformation and lifetime behavior were analyzed and compared with high-temperature isothermal low-cycle fatigue tests.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2023)
Article
Engineering, Mechanical
Wenbo Zhu, Guangjian Yuan, Jianping Tan, Shuai Chang, Shantung Tu
Summary: This study investigates the nanoindentation behavior of Inconel 718 polycrystalline material using a three-dimensional CPFEM simulation. The results show that the crystallographic orientation and grain boundary have little influence on the nanoindentation force-displacement curves, but significantly influence the local stress distributions and shape of the pile-up patterns. The existence of grain boundaries also affects the continuity of the stress distribution, with a larger grain boundary angle resulting in greater obstruction.
CHINESE JOURNAL OF MECHANICAL ENGINEERING
(2023)
Article
Engineering, Manufacturing
Arash P. Jirandehi, Behnam Hajshirmohammadi, Patricio Carrion, M. M. Khonsari, Nima Shamsaei, Shuai Shao
Summary: By testing additively manufactured Inconel 718 parts fabricated in different build orientations in a fatigue mode, it is found that vertically built specimens endure the most fatigue damage before failure, while diagonally built ones sustain the least. Additionally, a microstructure-sensitive algorithm is used to estimate the fatigue life under arbitrary load amplitudes with acceptable accuracy compared to experiments.
ADDITIVE MANUFACTURING
(2022)
Article
Mathematics, Interdisciplinary Applications
Adnan Eghtesad, Marko Knezevic
COMPUTATIONAL PARTICLE MECHANICS
(2018)
Article
Materials Science, Multidisciplinary
Adnan Eghtesad, Timothy J. Barrett, Marko Knezevic
Article
Computer Science, Interdisciplinary Applications
Adnan Eghtesad, Kai Germaschewski, Irene J. Beyerlein, Abigail Hunter, Marko Knezevic
ADVANCES IN ENGINEERING SOFTWARE
(2018)
Article
Engineering, Multidisciplinary
A. Eghtesad, A. R. Shafiei, M. Mahzoon
APPLIED MATHEMATICAL MODELLING
(2012)
Article
Engineering, Manufacturing
A. Eghtesad, A. R. Shafiei
INTERNATIONAL JOURNAL OF CRASHWORTHINESS
(2012)
Article
Engineering, Mechanical
A. Eghtesad, A. R. Shafiei, M. Mahzoon
JOURNAL OF FLUIDS AND STRUCTURES
(2012)
Article
Engineering, Mechanical
A. Eghtesad, A. R. Shafiei, M. Mahzoon
THEORETICAL AND APPLIED FRACTURE MECHANICS
(2011)
Article
Computer Science, Interdisciplinary Applications
Adnan Eghtesad, Timothy J. Barrett, Kai Germaschewski, Ricardo A. Lebensohn, Rodney J. McCabe, Marko Knezevic
ADVANCES IN ENGINEERING SOFTWARE
(2018)
Article
Thermodynamics
Mohamad Ali Bijarchi, Amirsaman Eghtesad, Hossein Afshin, Mohammad Behshad Shafii
APPLIED THERMAL ENGINEERING
(2019)
Article
Engineering, Mechanical
Aaron M. Cantara, Milovan Zecevic, Adnan Eghtesad, Camille M. Poulin, Marko Knezevic
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2019)
Article
Engineering, Mechanical
Adnan Eghtesad, Qixiang Luo, Shun -Li Shang, Ricardo A. Lebensohn, Marko Knezevic, Zi-Kui Liu, Allison M. Beese
Summary: This study combines a full-field crystal plasticity model with a first principles-informed dislocation density hardening law and a machine learning approach to investigate the microstructural features correlated with micromechanical field localization in polycrystalline Ni. The results show that regions near grain boundaries, higher Schmid factors, low slip transmissions, and high intergranular misorientations are more prone to being micromechanical hotspots. The integration of physics-based crystal plasticity with machine learning provides insights into the initiation zones of micromechanical damage in polycrystalline metals.
INTERNATIONAL JOURNAL OF PLASTICITY
(2023)
Article
Materials Science, Multidisciplinary
Timothy J. Barrett, Adnan Eghtesad, Rodney J. McCabe, Bjorn Clausen, Donald W. Brown, Sven C. Vogel, Marko Knezevic
Article
Mathematics, Interdisciplinary Applications
Adnan Eghtesad, Miroslav Zecevic, Ricardo A. Lebensohn, Rodney J. McCabe, Marko Knezevic
COMPUTATIONAL MECHANICS
(2018)
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)