Analysis of the Tensile Deformation Behaviors and Microstructure Characterization under Various Temperatures of MarBN Steel by EBSD
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Published:2023-03-10
Issue:6
Volume:16
Page:2243
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ISSN:1996-1944
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Container-title:Materials
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language:en
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Short-container-title:Materials
Author:
Zou Tongfei12, Liu Meng12, Cai Yifan12, Wang Quanyi12, Jiang Yunqing12, Wang Yunru12, Pei Yubing3, Zhang Hong12ORCID, Liu Yongjie12, Wang Qingyuan124
Affiliation:
1. Failure Mechanics and Engineering Disaster Prevention Key Laboratory of Sichuan Province, College of Architecture and Environment, Sichuan University, Chengdu 610065, China 2. Key Laboratory of Deep Underground Science and Engineering, Ministry of Education, Sichuan University, Chengdu 610065, China 3. State Key Laboratory of Long-Life High-Temperature Materials, Dongfang Turbine Co., Ltd., Deyang 618000, China 4. School of Architecture and Civil Engineering, Chengdu University, Chengdu 610106, China
Abstract
The uniaxial tensile behavior of MarBN steel with a constant strain rate of 5 × 10−5 s−1 under various temperatures ranging from room temperature to 630 °C was analyzed. This study aimed to identify the effect of the temperature on the tensile behavior and to understand the microstructure deformation by electron backscatter diffraction. The tensile results showed that the yield and ultimate tensile strength decreased with increasing temperature. Serrated flow was observed from 430 °C to 630 °C. The electron backscatter diffraction analysis showed that the low-angle grain boundaries decreased at the medium deformation and increased at the maximum deformation. In contrast, they decreased with increasing temperatures. In addition, the number of voids increased with the increasing plastic strain. As the strain increased, the voids joined together, and the tiny cracks became larger and failed. Three mechanisms were responsible for the tensile deformation failure at various temperatures: grain rotation, the formation and rearrangement of low angle grain boundaries, and void nucleation and propagation. Finally, the formation of the low-angle grain boundaries and voids under different degrees of deformation is discussed.
Funder
National Natural Science Research Funds of China National postdoctoral funds of China National key R & D Program Applied Basic Research Programs of Sichuan Province State Key Laboratory of Long-life High-Temperature Materials Fundamental Research Funds for the Central Universities International Visiting Program for Excellent Young Scholars of SCU
Subject
General Materials Science
Reference43 articles.
1. Abe, F., Barnard, P., Blum, R., Chai, G., deBarbadillo, J.J., Di Gianfrancesco, A., Forsberg, U., Fukuda, M., Hald, J., and Klöwer, J. (2017). Materials for Ultra-Supercritical and Advanced Ultra-Supercritical Power Plants, Woodhead Publishing. 2. Program on Materials Technology for Ultra-Supercritical Coal Power Plants;Viswanathan;J. Mater. Eng. Perform.,2013 3. Research and Development of Heat-Resistant Materials for Advanced USC Power Plants with Steam Temperatures of 700 °C and Above;Abe;Engineering,2015 4. Abe, F., Tabuchi, M., Semba, H., Igarashi, M., Yoshizawa, M., Komai, N., and Fujita, A. (2007, January 3–5). Feasibility of MARBN Steel for Application to Thick Section Boiler Components in USC Power Plant at 650 degrees C. Proceedings of the 5th International Conference on Advances in Materials Technology for Fossil Power Plants, Marco Island, FL, USA. 5. Precipitate design for creep strengthening of 9% Cr tempered martensitic steel for ultra-supercritical power plants;Abe;Sci. Technol. Adv. Mater.,2008
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