Article
Engineering, Civil
Lukasz Morawinski, Cezary Jasinski, Marta Ciemiorek, Tomasz Chmielewski, Lech Olejnik, Malgorzata Lewandowska
Summary: This article focuses on the Direct Drive Rotary Friction Welding of ultrafine-grained copper rods to address the economic limitations of producing finished machine parts from UFG metals due to the small dimensions of semi-finished elements. The research shows that introducing joining to technological processes can improve the quality of material connections.
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2021)
Article
Nanoscience & Nanotechnology
Xiuping Wang, Yan Ma, Bao Meng, Min Wan
Summary: The ultrafine-grained Zn alloy fabricated by ECAP process showed significant grain refinement and texture change, resulting in enhanced yield strength. An optimal combination of yield strength and elongation was achieved after multiple ECAP passes, balancing the mechanical properties of the material.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Jianqing Chen, Yehan Su, Qiyu Zhang, Jiapeng Sun, Donghui Yang, Jinghua Jiang, Dan Song, Aibin Ma
Summary: A homogeneously ultrafine-grained (UFG) Cu-38 Zn alloy with an average grain size of 0.64 μm was successfully fabricated by equal channel angular processing (ECAP), exhibiting a significantly enhanced strength-ductility synergy. The observed strength enhancement can be attributed to grain refinement and dislocation strengthening. After annealing, the alloy showed further improved strength with almost unchanged ductility, which is associated with solute/impurity segregation and precipitation phenomena inside the grains.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Christian Illgen, Benjamin Bohne, Martin F. -X. Wagner, Maximilian Gruber, Wolfram Volk, Philipp Frint
Summary: A new approach for equal-channel angular pressing (ECAP) of thin AA5083 sheets using two different orientations has been investigated, leading to considerable grain refinement and increased tensile strength. Multiple ECAP passes and microstructural analyses show that the modified experimental method can produce (ultra)fine-grained thin aluminum sheets with enhanced strength and ductility.
ADVANCED ENGINEERING MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Hamdi Kuleyin, Recep Gumruk, Harun Yanar, Muhammet Demirtas, Gencaga Purcek
Summary: Notched stainless steel 304 L samples processed by ECAP at 500°C showed significantly improved mechanical properties, with nearly twice the collapse load and energy absorption values compared to traditional methods.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2021)
Article
Materials Science, Multidisciplinary
I Vysotskii, S. Malopheyev, S. Mironov, R. Kaibyshev
Summary: Low-temperature friction-stir welding is successfully used for joining ultrafine-grained Al-Mg-Mn alloy, preserving the microstructure and second-phase particles, and achieving nearly-100% joint efficiency. The deformation behavior and strengthening mechanisms of the welded joints are studied.
MATERIALS CHARACTERIZATION
(2022)
Article
Materials Science, Characterization & Testing
Cagatay Elibol
Summary: CuCoNiBe alloys are widely used copper alloys due to their superior mechanical properties. ECAP processing can enhance their strength and accelerate precipitation kinetics, but it also leads to tension-compression asymmetry.
Review
Materials Science, Multidisciplinary
Qian Zhang, Quanan Li, Xiaoya Chen
Summary: This paper introduces the research status of Equal Channel Angular Pressing (ECAP) in preparing ultrafine grained magnesium alloy, summarizing the research results of recent ten years including the ECAP process, deformation mechanism, microstructure characteristics, texture evolution, and mechanical properties of the alloy. The paper also discusses the need to comprehensively consider the influences of grain refinement and texture evolution on mechanical properties, as well as the progress in ECAP numerical simulation analyzing the effects of process parameters. Additionally, the paper introduces the development trend and application prospect of ECAP process in commercial manufacturing, along with proposing solutions for urgent problems in current research.
MATERIALS RESEARCH EXPRESS
(2021)
Article
Chemistry, Physical
Partha Sarathi Sahoo, Manas Mohan Mahapatra, Pandu Ranga Vundavilli, Rama Krushna Sabat, Sachin Sirohi, Sanjeev Kumar
Summary: The effects of multiple passes of equal channel angular pressing (ECAP) on magnesium alloy sheets were investigated in this study. The microstructural analysis showed evidence of ultrafine grain refinement (UFG) due to severe plastic deformation. X-ray diffraction analysis revealed the presence of phases responsible for the enhancement of mechanical properties. The room temperature tensile and compressive strengths, as well as the hardness of the sheets, were significantly improved after multiple passes of hot ECAP.
Article
Chemistry, Physical
Gennadiy V. Klevtsov, Ruslan Z. Valiev, Natal'ya A. Klevtsova, Maxim N. Tyurkov, Mikhail L. Linderov, Marina M. Abramova, Arseniy G. Raab, Timur B. Minasov
Summary: This paper investigates the corrosion-resistant austenitic steel Fe-0.02C-18Cr-8Ni for medical applications and compares the mechanical properties of the steel in initial and ultrafine-grained states. The study demonstrates that the ultrafine-grained steel 0.08C-18Cr-9Ni exhibits significantly improved properties and is highly promising for medical product manufacturing under various types of loads.
Article
Automation & Control Systems
Serkan Ogut, Hasan Kaya, Aykut Kentli, Mehmet Ucar
Summary: In this study, ECAP, Exp.-ECAP, and HECAP processes were applied to pure copper specimens. An optimized die was used to minimize pressing load and strain inhomogeneity in the specimen. Microstructure analysis and mechanical tests showed that the Exp.-ECAP process yielded better results in grain refinement and mechanical properties.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Zhuoliang Li, Kenong Xia, Hua Ding
Summary: Pure Mg particles were consolidated using ECAP with back pressure at 423 K, resulting in fully dense bulk Mg with refined grains below 2 μm, leading to enhanced yield strength and ductility. The development of intense texture during ECAP softened the texture, while breaking the oxide layer on the surface of Mg particles into nano-sized pieces provided dispersion strengthening.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2021)
Article
Chemistry, Physical
Shipeng Yue, Jianping Qu, Guoliang Li, Shichao Liu, Zhongkai Guo, Jinchuan Jie, Yubo Zhang, Tingju Li
Summary: This study investigated the microstructure evolution and mechanical properties of Cu-3Ag-xZr alloys processed by equal channel angular pressing at room temperature. The results showed that significant grain refinement and excellent comprehensive properties were achieved, which could provide a feasible way for the preparation of high-performance alloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Marina A. A. Nikitina, Rinat K. K. Islamgaliev, Artur V. V. Ganeev, Aleksandra A. A. Frik
Summary: The influence of the ultrafine-grained (UFG) structure on the fatigue endurance limit and the nature of fatigue failure is investigated. It is found that the presence of carbides and the coincidence site lattice relationship (CSL) and twin boundaries in the UFG structure leads to an increase in the fatigue endurance limit. Scanning and transmission electron microscopy and X-ray diffraction analysis are used to study the mechanisms of fatigue failure. The formation of the UFG structure through rolling and subsequent heat treatment results in a significant increase in the fatigue endurance limit by more than 70%.
Article
Nanoscience & Nanotechnology
Meshal Y. Alawadhi, Shima Sabbaghianrad, Yi Huang, Terence G. Langdon
Summary: The research shows that processing oxygen-free copper through equal-channel angular pressing at room temperature can alter its microstructure and mechanical properties, indicating the occurrence of dynamic recovery in tensile testing.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Motohiro Yuasa, Eitaro Yukutake, Xinsheng Huang, Kazutaka Suzuki, Naobumi Saito, Yasumasa Chino
MATERIALS TRANSACTIONS
(2017)
Article
Materials Science, Multidisciplinary
Kazutaka Suzuki, Naobumi Saito, Xinsheng Huang, Motohiro Yuasa, Yasumasa Chino
MATERIALS TRANSACTIONS
(2017)
Article
Materials Science, Multidisciplinary
Yuta Fukuda, Masafumi Noda, Tomomi Ito, Kazutaka Suzuki, Naobumi Saito, Yasumasa Chino
ADVANCES IN MATERIALS SCIENCE AND ENGINEERING
(2017)
Article
Materials Science, Multidisciplinary
Masataka Hakamada, Kazunori Shimizu, Tomokazu Yamashita, Akira Watazu, Naobumi Saito, Hajime Iwasaki
JOURNAL OF MATERIALS SCIENCE
(2010)
Article
Metallurgy & Metallurgical Engineering
Yong-Jai Kwon, Ichinori Shigematsu, Naobumi Saito
JOURNAL OF THE JAPAN INSTITUTE OF METALS
(2009)
Article
Metallurgy & Metallurgical Engineering
Yong-Jai Kwon, Ichinori Shigematsu, Naobumi Saito
JOURNAL OF THE JAPAN INSTITUTE OF METALS
(2010)
Article
Chemistry, Multidisciplinary
Takahiro Ishizaki, Naobumi Saito
Article
Chemistry, Multidisciplinary
Takahiro Ishizaki, Masazumi Okido, Yoshitake Masuda, Naobumi Saito, Michiru Sakamoto
Article
Materials Science, Multidisciplinary
J-H Jiang, A-B Ma, F-M Lu, N. Saito, A. Watazu, D. Song, P. Zhang, Y. Nishida
MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION
(2011)
Article
Nanoscience & Nanotechnology
Masataka Hakamada, Akira Watazu, Naobumi Saito, Hajime Iwasaki
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2010)
Article
Metallurgy & Metallurgical Engineering
Jiang Jing-hua, Ma Ai-bin, Song Dan, N. Saito, Yuan Yu-chun, Y. Nishida
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2010)
Proceedings Paper
Materials Science, Multidisciplinary
Akira Watazu, Masataka Hakamada, Hajime Iwasaki, Ichinori Shigematsu, Naobumi Saito
THERMEC 2011, PTS 1-4
(2012)
Article
Materials Science, Ceramics
Akira Watazu, Hirofumi Kido, Kensuke Beppu, Kay Teraoka, Kenzo Morinaga, Kae Kakura, Tsutomu Sonoda, Naobumi Saito
JOURNAL OF THE AUSTRALIAN CERAMIC SOCIETY
(2011)
Article
Metallurgy & Metallurgical Engineering
Hajime Iwasaki, Naobumi Saito, Michiru Sakamoto, Masataka Hakamada, Kenji Higashi
STEEL RESEARCH INTERNATIONAL
(2010)
