Article
Nanoscience & Nanotechnology
Sila Ece Atabay, Oscar Sanchez-Mata, Jose Alberto Muniz-Lerma, Mathieu Brochu
Summary: The study successfully fabricated crack-free parts of Rene 77 high gamma' containing superalloy through laser powder bed fusion, maintaining a defect-free structure post solutionizing and aging heat treatment. The microstructure analysis revealed columnar grains, fine gamma' precipitates, and a bimodal gamma' distribution after heat treatment. Tensile deformation behavior testing showed higher strength values for all conditions compared to a wrought and heat-treated alloy tested at room temperature.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Electrochemistry
Zhi-Wei Li, Yun-Shan Jiang, Yang Xia, Liang Deng, Mei-Yan Sun, Guang-Jie Shao, Lei Zhao, Fu-Da Yu, Zhen-Bo Wang
Summary: This study successfully achieved ultra-long cycling of lithium cobaltate at high voltage by using a surface modification layer. The strategy protects the electrode, reduces cobalt loss, and provides extra electrons for the lithium ion reactions.
ELECTROCHIMICA ACTA
(2022)
Article
Nanoscience & Nanotechnology
Ali Ghasemi, Ali Mohammad Kolagar, Majid Pouranvari
Summary: This research investigates the influence of partial solution treatment and cooling strategy on the microstructure and mechanical properties of an as-cast Co-Cr-W superalloy. Findings indicate that no aging cycle is needed as the samples show consistent microstructure and mechanical properties, meeting the minimum requirements of the X-40 superalloy.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Chemistry, Physical
Bing Wei, Zuming Liu, Bizhong Nong, Bin Cao, Xueqian Lv, Yake Ren, Yongkang Ai
Summary: Selective laser melting (SLM) was used to prepare Rene 104 PM nickel-based superalloy samples, which exhibited unique microstructure and cracking behavior, resulting in significant anisotropy in tensile performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Weijie Xing, Gang Zhu, Xinlang Zuo, Xiaotong Guo, Zhenbo Zhao, Hui Xiao, Zhen Zheng, Wenxia Zhao, Changkui Liu
Summary: The study found that overheating can cause significant degradation of microstructures in high-temperature alloys, but this degradation may be restored during subsequent normal service processes, indicating that overheating does not necessarily lead to damage to blade performance.
MATERIALS CHARACTERIZATION
(2021)
Article
Nanoscience & Nanotechnology
Abhishek Sharma, Saurabh Dixit, Nithin Baler, Priyanka Agrawal, Surendra Kumar Makineni, Kamanio Chattopadhyay
Summary: This study investigates the effects of boron addition on the microstructure, thermophysical properties, and creep resistance of a polycrystalline superalloy. The results show that moderate boron addition can improve the high-temperature capability and creep resistance of the alloy.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Z. Q. Zhou, P. Zhang, J. B. Yan, G. Y. Zhou, J. J. Shi, G. H. Cao, Y. Yuan
Summary: The microstructure evolution and deformation behavior of the Ni-Fe-based superalloy HT650T under creep conditions were investigated using scanning electron microscopy with electron backscattered diffraction and transmission electron microscopy. It was found that the precipitates in the alloy consisted of gamma' phases, MC and M23C6 carbides, and no gamma'-free regions were observed. With temperature and duration of creep increasing, the gamma' precipitates grew gradually but maintained their spherical shape, while the M23C6 carbides coarsened and exhibited continuous morphology in some regions. The interaction between dislocations and gamma' precipitates was controlled by the Orowan looping mechanism. Stress concentration primarily occurred at high-angle grain boundaries, and crack propagation was hindered by specific grain boundaries. The excellent creep rupture resistance of HT650T alloy was attributed to the morphology and microstructural stability of phase constituents.
MATERIALS CHARACTERIZATION
(2023)
Article
Chemistry, Physical
Dong-Min Kim, Chiwon Kim, Cheol-Hyeok Yang, Ji-Un Park, Hi-Won Jeong, Kwang-Hyuk Yim, Hyun-Uk Hong
Summary: This study investigated the influence of heat treatment on the microstructure and high-temperature mechanical properties of Inconel 740H superalloy. Various heat treatments were conducted, and the samples exhibited similar gamma-matrix with spherical gamma' particles. The fractions of carbides at the grain boundaries varied, and the samples showed similar microhardness and tensile properties. Thermal exposure and creep tests revealed differences in the growth of gamma', microhardness, and creep life of the samples. The presence of MC carbides in the sample helped accommodate stress exerted on grain boundaries. (c) 2023 Elsevier B.V. All rights reserved.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Nanoscience & Nanotechnology
Hubert Pasiowiec, Beata Dubiel, Rafal Dziurka, Piotr Bala, Piotr Ledwig, Miroslaw Wrobel, Marta Gajewska, Waldemar Ziaja, Marek Poreba
Summary: The microstructure evolution of Inconel 625 alloy during high-temperature creep tests was studied. It was found that the cellular microstructure of Inconel 625 is stable at 600 degrees C and exhibits negative creep strain. Plate-like particles and coarse precipitates were present inside the grains and at the grain boundaries in the samples tested at temperatures ranging from 700 to 800 degrees C.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Abhishek Sharma, Chandan Mondal, Kamanio Chattopadhyay, Dipankar Banerjee, Surendra Kumar Makineni
Summary: This study provides a detailed analysis of the deformation micromechanisms involved in the compressive creep of a directionally solidified Cobalt-base superalloy at various stresses and temperatures. The results show different deformation modes under different stress levels, leading to variations in the macroscopic creep behavior.
Article
Chemistry, Physical
Xiaotong Guo, Hao He, Fangzhou Chen, Jiahao Liu, Wendao Li, Hao Zhao
Summary: In this study, the effects of overheating on the microstructures and creep properties of a second-generation nickel base single crystal superalloy were investigated. Overheating treatment was conducted at 1100°C and 1300°C, followed by creep tests at 1000°C/300 MPa and 1100°C/130 MPa. The results showed that overheating at 1100°C had negligible effect on the microstructure and limited effect on creep properties. However, with extended overheating time at 1300°C, there was an increase in γ' dissolution and reduction in creep properties.
Article
Materials Science, Multidisciplinary
K. J. Tan, X. G. Wang, J. J. Liang, J. Meng, Y. Z. Zhou, X. F. Sun
Summary: The study focused on the microstructures of a second-generation Ni-based single crystal superalloy after creep and rejuvenation heat treatment. It was found that the rejuvenation heat treatment had a shallow impact on the microstructures, such as the dislocation network, the gamma phase, and the gamma' phase, without significantly affecting the alloy properties. Additionally, the average creep life after rejuvenation heat treatment was comparable to that after standard heat treatment, indicating that RHT could effectively repair damaged parts and prolong the overall life of the sample.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Vassili A. Vorontsov, Thomas P. McAuliffe, Mark C. Hardy, David Dye, Ioannis Bantounas
Summary: The tensile creep performance of a polycrystalline Co/Ni-base superalloy with a multimodal gamma' distribution was studied at 800 degrees C and 300 MPa. The rupture life of the alloy was comparable to that of RR1000 tested under similar conditions. Microstructural examination revealed the presence of continuous gamma' precipitates and M23C6 carbides along the grain boundaries, as well as the coarsening of the secondary gamma' precipitates. Long planar deformation bands, identified as microtwins, were observed along with the depletion of gamma' stabilising elements. The mechanism for precipitate dissolution was suggested to be the Kolbe reordering mechanism.
Article
Engineering, Mechanical
Jianwei Liang, Yan Peng, Wei Zhang, Jiapo Wang
Summary: The study on gradient loading creep behavior of nickel-based single crystal revealed that load and holding time significantly affect creep properties, with load changes causing instantaneous jumps in creep deformation and strain rate, while holding time mainly influencing the evolution of internal microstructure.
ENGINEERING FAILURE ANALYSIS
(2022)
Article
Nanoscience & Nanotechnology
Weidong Xuan, Ge Song, Fangmiao Duan, Zude Xiao, Wenxuan Pan, Yajun Zhang, Chuanjun Li, Jiang Wang, Zhongming Ren
Summary: The creep properties of nickel-base single crystal superalloy CMSX-4 with and without high magnetic field at 980 degrees C/250 MPa are investigated. Results show that the presence of high magnetic field enhances rupture life and changes fracture behavior, with differences in fracture surface morphology and microporosity distribution.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Thermodynamics
D. Szeliga, K. Kubiak, W. Ziaja, R. Cygan, J. Sz. Suchy, A. Burbelko, W. J. Nowak, J. Sieniawski
EXPERIMENTAL THERMAL AND FLUID SCIENCE
(2017)
Article
Materials Science, Multidisciplinary
Maryana Zagula-Yavorska, Kamil Gancarczyk, Jan Sieniawski
HIGH TEMPERATURE MATERIALS AND PROCESSES
(2017)
Article
Engineering, Civil
Maryana Zagula-Yavorska, Jan Sieniawski
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2018)
Article
Materials Science, Multidisciplinary
Wojciech J. Nowak, Bartek Wierzba, Jan Sieniawski
HIGH TEMPERATURE MATERIALS AND PROCESSES
(2018)
Article
Metallurgy & Metallurgical Engineering
Maciej Motyka, Jan Sieniawski, Waldemar Ziaja, Malwina Mroczka, Mateusz Brylinski
INTERNATIONAL JOURNAL OF MATERIALS RESEARCH
(2018)
Article
Materials Science, Multidisciplinary
Przemyslaw Kwolek, Krzysztof Krupa, Andrzej Obloj, Pawel Kocurek, Malgorzata Wierzbinska, Jan Sieniawski
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2018)
Article
Materials Science, Multidisciplinary
Maciej Motyka, Anna Baran-Sadleja, Jan Sieniawski, Malgorzata Wierzbinska, Kamil Gancarczyk
MATERIALS SCIENCE AND TECHNOLOGY
(2019)
Article
Materials Science, Multidisciplinary
Jacek Krawczyk, Wlodzimierz Bogdanowicz, Aneta Hanc-Kuczkowska, Anna Tondos, Jan Sieniawski
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2018)
Article
Engineering, Mechanical
W. Grzesik, P. Nieslony, W. Habrat, J. Sieniawski, P. Laskowski
TRIBOLOGY INTERNATIONAL
(2018)
Proceedings Paper
Engineering, Manufacturing
Witold Habrat, Krzysztof Krupa, Piotr Laskowski, Jan Sieniawski
ADVANCES IN MANUFACTURING ENGINEERING AND MATERIALS, ICMEM 2018
(2019)
Proceedings Paper
Materials Science, Multidisciplinary
J. Barglik, K. Ducki, D. Kukla, J. Mizera, G. Mrowka-Nowotnik, J. Sieniawski, A. Smalcerz
VIII INTERNATIONAL SCIENTIFIC COLLOQUIUM ON MODELLING FOR MATERIALS PROCESSING
(2018)
Proceedings Paper
Nanoscience & Nanotechnology
Wojciech J. Nowak, Bartek Wierzba, Jan Sieniawski
6TH INTERNATIONAL CONFERENCE ON MATHEMATICAL MODELLING IN PHYSICAL SCIENCES (IC-MSQUARE 2017)
(2017)
Article
Crystallography
W. Bogdanowicz, J. Krawczyk, A. Tondos, J. Sieniawski
CRYSTAL RESEARCH AND TECHNOLOGY
(2017)
Article
Metallurgy & Metallurgical Engineering
D. Szeliga, K. Kubiak, J. Sieniawski
ARCHIVES OF FOUNDRY ENGINEERING
(2017)
Article
Metallurgy & Metallurgical Engineering
P. Maj, B. Adamczyk-Cieslak, M. Slesik, J. Mizera, T. Pieja, J. Sieniawski, T. Gancarczyk, S. Dudek
ARCHIVES OF METALLURGY AND MATERIALS
(2017)