Article
Multidisciplinary Sciences
Chao Li, Ruslan Karimbaev, Shengjie Wang, Auezhan Amanov, Dagang Wang, Magd Abdel Wahab
Summary: Alloy 718 is widely used in maritime and aerospace industries for engine rotating components. However, the surface properties of the 3D printed alloy 718 samples using directed energy deposition are typically subpar. By introducing ultrasonic nanocrystal surface modification, the mechanical property and wear resistance of alloy 718 can be significantly improved.
SCIENTIFIC REPORTS
(2023)
Article
Materials Science, Ceramics
Luqiang Tu, Liangliang Lin, Chao Liu, Tianchang Zheng, Yadi Deng, Lei Han, Qinglong An, Weiwei Ming, Ming Chen
Summary: Nickel-based superalloy is a critical material in aerospace for turbine engine components, but its poor machinability and low efficiency hinder its wide use. Cubic boron nitride (cBN) is a potential candidate with extreme hardness and inertness to process superalloys. This study systematically investigated the wear characteristic of cBN at different cutting speeds during the dry turning of Inconel 718 through experiments and FEM simulations. The effects of cutting speeds on cBN tool life and wear mechanisms were examined, and FEM simulations analyzed the influence of tool wear on the cutting edge temperature field and surface layer stress distribution of Inconel 718.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Jon Ander Sarasua Miranda, Ander Trinidad Cristobal, Haizea Gonzalez-Barrio, Pablo Fernandez-Lucio, Gaizka Gomez-Escudero, Aitor Madariaga, Pedro Jose Arrazola
Summary: This study compared the effects of three different mechanical finishing processes on the surface properties of Inconel 718 alloy components, including polishing, burnishing, and hammer-peening. It was found that each technology excelled in improving surface characteristics, but showed slight differences in roughness and residual stress.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Engineering, Manufacturing
Cleverson Pinheiro, Marcel Yuzo Kondo, Simone Simoes Amaral, Emanuele Schneider Callisaya, Jose Vitor Candido De Souza, Manoel Cleber De Sampaio Alves, Marcos Valerio Ribeiro
Summary: The study evaluated the impact of cutting speed, feed rate, tool, and lubrication parameters on the machining process of Inconel 718 superalloy, finding that a feed rate of 0.10 mm/rev and a cutting speed of 70 m/min provided optimal processing results.
MATERIALS AND MANUFACTURING PROCESSES
(2021)
Article
Engineering, Mechanical
Emin Salur
Summary: The effect of different cooling/lubrication conditions on the machining performance and surface quality of Inconel 718 superalloy was investigated. The results showed that LN2-assisted cryogenic cooling significantly reduced tool wear, surface roughness, cutting temperature, and cutting energy.
TRIBOLOGY INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Ateekh Ur Rehman, Yusuf Usmani, Ali M. Al-Samhan, Saqib Anwar
Summary: Nickel-based superalloys demonstrate excellent high temperature performance, showing high tensile strength and good tensile ductility in room temperature tests. Joining two different nickel-based superalloys using rotary friction welding produced defect-free metallurgical joints.
Article
Engineering, Manufacturing
Bao-Yu Zhang, Yu-Ning Zeng, Xue-Qin Pang, Song-Qing Li, Xiao Liu, Wen-Jun Deng
Summary: This paper proposes a new approach called selective laser ablation assisted milling (SLA-Mill) for nickel-based superalloys, which utilizes low power laser with small spot size to selectively ablate the uncut surface in front of the cutting tool, resulting in abundant surface defects and improving the machinability of difficult-to-cut materials.
ADVANCES IN MANUFACTURING
(2022)
Article
Materials Science, Multidisciplinary
Michael Munther, Ali Tajyar, Noah Holtham, Lloyd Hackel, Ali Beheshti, Keivan Davami
Summary: A novel LP scheme, LP + TME, was demonstrated to achieve thermal stabilization and material enhancement in high temperature systems through the formation of thermally-stable subgrains and interactions between dislocations and precipitates.
Article
Materials Science, Multidisciplinary
R. Y. Zhang, H. L. Qin, Z. N. Bi, Y. T. Tang, J. Araujo de Oliveira, T. L. Lee, C. Panwisawas, S. Y. Zhang, J. Zhang, J. Li, H. B. Dong
Summary: In this study, the gamma '' variant distribution in Inconel 718 samples was tailored through ageing heat treatment, and the variant-sensitive deformation behavior was studied through in situ tensile tests using neutron diffraction. The results showed that the yield strength varied with different gamma '' variant distributions, which can be attributed to the interactions between dislocations and different gamma '' variants.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Sajad Ghaemifar, Hamed Mirzadeh
Summary: The high cooling rate in laser powder bed fusion (L-PBF) additive manufacturing can suppress the formation of niobium carbide (NbC) phase in Inconel 718 nickel-based superalloy parts. However, the NbC phase may precipitate during elevated temperature exposure. This study investigates the precipitation kinetics of NbC carbide during homogenization heat treatment and finds that increasing the homogenization temperature accelerates its formation. The diffusion of C and Nb atoms in the Ni matrix is identified as the underlying mechanism for NbC carbide formation during homogenization heat treatment.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Yuhei Ogawa, Kohei Noguchi, Osamu Takakuwa
Summary: This study investigated the tensile mechanical properties of a Ni-based superalloy 718 precharged with approximately 90 mass ppm hydrogen under a wide range of temperatures, aiming to clarify the uncertainties surrounding the hydrogen-related embrittlement mechanisms of the material. The study found that hydrogen had a substantial detrimental effect on the ductility of the material in the near-ambient to high-temperature range, resulting from microcrack initiations along annealing twin boundaries and crystallographic slip planes. Additionally, the study revealed that the dynamic hydrogen-dislocation interaction was not important for embrittlement. By combining the insights gained from the test program, a new model for the nucleation process of hydrogen-induced fracturing was established.
Article
Nanoscience & Nanotechnology
Yunhao Zhao, Fan Meng, Chuan Liu, Susheng Tan, Wei Xiong
Summary: It has been found that conducting a higher temperature homogenization process on Inconel 718 alloys can effectively remove residual stress and introduce isotropic microstructures and tensile properties, crucial for engineering applications. This method also improves the isotropic precipitation of strengthening phases during subsequent aging processes, aiding in the development of effective post-heat treatments for additively manufactured alloys.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Sajad Ghaemifar, Hamed Mirzadeh
Summary: In this study, the effects of direct aging treatment on Inconel 718 superalloy manufactured by selective laser melting were systematically investigated. It was found that direct aging can achieve peak aged condition at shorter holding times compared to aging after heat treatment. The precipitation kinetics of gamma '' phase were analyzed using hardness measurements and microstructural analysis, which provided consistent results for the activation energy.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Nanoscience & Nanotechnology
Jan Honnige, Cui Er Seow, Supriyo Ganguly, Xiangfang Xu, Sandra Cabeza, Harry Coules, Stewart Williams
Summary: This paper focuses on understanding the microstructural features, phase formation, and three-dimensional residual stress state variation in the manufacture of structural components made from nickel-based super alloys using Wire + Arc Additive Manufacturing (WAAM). The research aims to address the challenges of process residual stress and undesired microstructure in WAAM, providing insights into improving mechanical properties and manufacturing processes.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Chemistry, Physical
Tian Liu, Xiaonong Cheng, Rui Luo, Yu Cao, Hengnan Ding, Leli Chen, Qian Wang, Baosen Zhang
Summary: The strain-induced precipitation process in austenitic Inconel 617B superalloy in its service temperature range was systematically investigated. The main strain-induced precipitate was identified as M23C6 carbide, with a minimum incubation period of 30 s at 800 degrees C. The morphological evolution of the precipitates and their influence on flow stress during deformation were studied in detail.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
J. Lindwall, A. Malmelov, A. Lundback, L-E Lindgren
Review
Mechanics
Lars-Erik Lindgren, Andreas Lundback
COMPTES RENDUS MECANIQUE
(2018)
Article
Thermodynamics
Lars-Erik Lindgren, Andreas Lundback, Andreas Malmelov
JOURNAL OF THERMAL STRESSES
(2019)
Article
Engineering, Manufacturing
Dennis Karlsson, Greta Lindwall, Andreas Lundback, Mikael Amnebrink, Magnus Bostrom, Lars Riekehr, Mikael Schuisky, Martin Sahlberg, Ulf Jansson
ADDITIVE MANUFACTURING
(2019)
Article
Engineering, Manufacturing
Johan Lindwall, Victor Pacheco, Martin Sahlberg, Andreas Lundback, Lars-Erik Lindgren
ADDITIVE MANUFACTURING
(2019)
Article
Chemistry, Physical
Bijish Babu, Andreas Lundback, Lars-Erik Lindgren
Article
Chemistry, Physical
Corinne Charles Murgau, Andreas Lundback, Pia Akerfeldt, Robert Pederson
Article
Materials Science, Multidisciplinary
Andreas Malmelov, Andreas Lundback, Lars-Erik Lindgren
Article
Chemistry, Physical
Andreas Malmelov, Martin Fisk, Andreas Lundback, Lars-Erik Lindgren
Article
Chemistry, Physical
Johan Lindwall, Andreas Lundback, Jithin James Marattukalam, Anders Ericsson
Summary: This study presents an alternative method of predicting the influence of process parameters on crystalline phase evolution during laser-based powder bed fusion (PBF-LB) through modeling. The simulation results show a similar trend to the experimental estimates, indicating that low laser power, large hatch spacing, and long hatch lengths are beneficial for glass formation.
Proceedings Paper
Green & Sustainable Science & Technology
Lars-Erik Lindgren, Andreas Lundback, Martin Fisk, Joar Draxler
2ND INTERNATIONAL CONFERENCE ON SUSTAINABLE MATERIALS PROCESSING AND MANUFACTURING (SMPM 2019)
(2019)
Proceedings Paper
Engineering, Biomedical
Lars-Erik Lindgren, Andreas Lundback
PROCEEDINGS OF THE 3RD INTERNATIONAL CONFERENCE ON PROGRESS IN ADDITIVE MANUFACTURING
(2018)
Proceedings Paper
Engineering, Industrial
Kristina Warmefjord, Rikard Soderberg, Mikael Ericsson, Anders Appelgren, Andreas Lundback, Johan Loof, Lars Lindkvist, Hans-Olof Svensson
14TH CIRP CAT 2016 - CIRP CONFERENCE ON COMPUTER AIDED TOLERANCING
(2016)
Article
Engineering, Manufacturing
Lars-Erik Lindgren, Andreas Lundback, Martin Fisk, Robert Pederson, Joel Andersson
ADDITIVE MANUFACTURING
(2016)
Article
Mathematics, Applied
Guo Zheng, Zengqiang Cao, Yuehaoxuan Wang, Reza Talemi
Summary: This study introduces two novel methods for predicting the fatigue response of Dynamic Cold Expansion (DCE) and Static Cold Expansion (SCE) open-hole plates. The accuracy of the prediction is enhanced by considering stress distributions and improving existing methods. The study also discusses the mechanisms behind fatigue life enhancement and fatigue crack propagation modes in cold expansion specimens.
FINITE ELEMENTS IN ANALYSIS AND DESIGN
(2024)
Article
Mathematics, Applied
Eric Heppner, Tomohiro Sasaki, Frank Trommer, Elmar Woschke
Summary: This paper presents a modeling approach for estimating the bonding strength of friction-welded lightweight structures. Through experiments and simulations, a method for evaluating the bonding strength of friction-welded lightweight structures is developed, and the plausibility and applicability of the model are discussed.
FINITE ELEMENTS IN ANALYSIS AND DESIGN
(2024)
Article
Mathematics, Applied
Piermario Vitullo, Alessio Colombo, Nicola Rares Franco, Andrea Manzoni, Paolo Zunino
Summary: Many applications in computational physics involve approximating problems with microstructure, characterized by multiple spatial scales in their data. However, these numerical solutions are often computationally expensive due to the need to capture fine details at small scales. Traditional projection based reduced order models (ROMs) fail to resolve these issues, even for second-order elliptic PDEs commonly found in engineering applications. To address this, we propose an alternative nonintrusive strategy to build a ROM, that combines classical proper orthogonal decomposition (POD) with a suitable neural network (NN) model to account for the small scales.
FINITE ELEMENTS IN ANALYSIS AND DESIGN
(2024)
Article
Mathematics, Applied
Chanh Dinh Vuong, Xiaofei Hu, Tinh Quoc Bui
Summary: In this paper, we present a dynamic description of the smoothing gradient-enhanced damage model for the simulation of quasi-brittle failure localization under time-dependent loading conditions. We introduce two efficient rate-dependent damage laws and various equivalent strain formulations to analyze the complicated stress states and inertia effects of the dynamic regime, enhancing the capability of the adopted approach in modeling dynamic fracture and branching.
FINITE ELEMENTS IN ANALYSIS AND DESIGN
(2024)
Article
Mathematics, Applied
Alexandre D. C. Amaro, A. Francisca Carvalho Alves, F. M. Andrade Pires
Summary: This study focuses on analyzing various deformation mechanisms that affect the behavior of PC/ABS blends using computational homogenization. By establishing a representative microstructural volume element, defining the constitutive description of the material phases, and modeling the interfaces and matrix damage, accurate predictions can be achieved. The findings have important implications for broader applications beyond PC/ABS blends.
FINITE ELEMENTS IN ANALYSIS AND DESIGN
(2024)
Article
Mathematics, Applied
David Hoffmeyer, A. R. Damanpack
Summary: This paper introduces a method for determining all six stress components for a cantilever-type beam that is subjected to concentrated end loads. The method considers an inhomogeneous cross-section and employs cylindrically orthotropic material properties. The efficacy of the method is validated by numerical examples and a benchmark example, and the analysis on a real sawn timber cross-section reveals significant disparities in the maximum stresses compared to conventional engineering approaches.
FINITE ELEMENTS IN ANALYSIS AND DESIGN
(2024)
Article
Mathematics, Applied
Vladimir Stojanovic, Jian Deng, Dunja Milic, Marko D. Petkovic
Summary: The present paper investigates the dynamic analysis of a coupled Timoshenko beam-beam or beam-arch mechanical system with geometric nonlinearities. A modified p-version finite element method is developed for the vibrations of a shear deformable coupled beam system with a discontinuity in an elastic layer. The main contribution of this work is the discovery of coupled effects and phenomena in the simultaneous vibration analysis of varying discontinuity and varying curvature of the newly modelled coupled mechanical system. The analysis results are valuable and have broader applications in the field of solids and structures.
FINITE ELEMENTS IN ANALYSIS AND DESIGN
(2024)
Article
Mathematics, Applied
Gihwan Kim, Phill-Seung Lee
Summary: The phantom-node method is applied in the phase field model for mesh coarsening to improve computational efficiency. By recovering the fine mesh in the crack path domain into a coarse mesh, this method significantly reduces the number of degrees of freedom involved in the computation.
FINITE ELEMENTS IN ANALYSIS AND DESIGN
(2024)
Article
Mathematics, Applied
Souhail Chaouch, Julien Yvonnet
Summary: In this study, an unsupervised machine learning-based clustering approach is developed to reduce the computational cost of nonlinear multiscale methods. The approach clusters macro Gauss points based on their mechanical states, reducing the problem from macro scale to micro scale. A single micro nonlinear Representative Volume Element (RVE) calculation is performed for each cluster, using a linear approximation of the macro stress. Anelastic macro strains are used to handle internal variables. The technique is applied to nonlinear hyperelastic, viscoelastic and elastoplastic composites.
FINITE ELEMENTS IN ANALYSIS AND DESIGN
(2024)
Article
Mathematics, Applied
Hoang-Giang Bui, Jelena Ninic, Christian Koch, Klaus Hackl, Guenther Meschke
Summary: With the increasing demand for underground transport infrastructures, it is crucial to develop methods and tools that efficiently explore design options and minimize risks to the environment. This study proposes a BIM-based approach that connects user-friendly software with effective simulation tools to analyze complex tunnel structures. The results show that modeling efforts and computational time can be significantly reduced while maintaining high accuracy.
FINITE ELEMENTS IN ANALYSIS AND DESIGN
(2024)
Article
Mathematics, Applied
Aslan Nasirov, Xiaoyu Zhang, David Wagner, Saikumar R. Yeratapally, Caglar Oskay
Summary: This manuscript presents an efficient model construction strategy for the eigenstrain homogenization method (EHM) for the reduced order models of the nonlinear response of heterogeneous microstructures. The strategy relies on a parallel, element-by-element, conjugate gradient solver, achieving near linear scaling with respect to the number of degrees of freedom used to resolve the microstructure. The linear scaling in the number of pre-analyses required to construct the reduced order model (ROM) follows from the EHM formulation. The developed framework has been verified using an additively manufactured polycrystalline microstructure of Inconel 625.
FINITE ELEMENTS IN ANALYSIS AND DESIGN
(2024)
Article
Mathematics, Applied
Atticus Beachy, Harok Bae, Jose A. Camberos, Ramana V. Grandhi
Summary: Emulator embedded neural networks leverage multi-fidelity data sources for efficient design exploration of aerospace engineering systems. However, training the ensemble models can be costly and pose computational challenges. This work presents a new type of emulator embedded neural network using the rapid neural network paradigm, which trains near-instantaneously without loss of prediction accuracy.
FINITE ELEMENTS IN ANALYSIS AND DESIGN
(2024)
Article
Mathematics, Applied
Arash Hajisharifi, Michele Girfoglio, Annalisa Quaini, Gianluigi Rozza
Summary: This paper introduces three reduced order models for reducing computational time in atmospheric flow simulation while preserving accuracy. Among them, the PODI method, which uses interpolation with radial basis functions, maintains accuracy at any time interval.
FINITE ELEMENTS IN ANALYSIS AND DESIGN
(2024)
Article
Mathematics, Applied
D. Munoz, S. Torregrosa, O. Allix, F. Chinesta
Summary: The Proper Generalized Decomposition (PGD) is a Model Order Reduction framework used for parametric analysis of physical problems. It allows for offline computation and real-time simulation in various situations. However, its efficiency may decrease when the domain itself is considered as a parameter. Optimal transport techniques have shown exceptional performance in interpolating fields over geometric domains with varying shapes. Therefore, combining these two techniques is a natural choice. PGD handles the parametric solution while the optimal transport-based methodology transports the solution for a family of domains defined by geometric parameters.
FINITE ELEMENTS IN ANALYSIS AND DESIGN
(2024)
Article
Mathematics, Applied
Jothi Mani Thondiraj, Akhshaya Paranikumar, Devesh Tiwari, Daniel Paquet, Pritam Chakraborty
Summary: This study develops a diffused interface CPFEM framework, which reduces computational cost by using biased mesh and provides accurate results using non-conformal elements in the mesh size transiting regions. The accuracy of the framework is confirmed through comparisons with sharp and stepped interface results.
FINITE ELEMENTS IN ANALYSIS AND DESIGN
(2024)