Study on the microstructure and mechanical properties of explosive welded 2205/X65 bimetallic sheet |
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| Affiliation: | 1. State Key Laboratory of Mechanical Behavior for Materials, Xi’an Jiaotong University, Xi’an 710049, China;2. Baoji Petroleum Steel Pipe Co., Ltd., Baoji, Shaanxi 721008, China;3. Xi’an Tianli Clad Metal Materials Co., Ltd., Xi’an 710201, China;1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, 100083, PR China;2. School of Chemical Engineering, The University of Queensland, St Lucia, QLD, 4072, Australia;3. Wanfeng Metallurgical Spare Parts Co., Ltd., Hebei, 076250, China;1. State Key Laboratory of Mechanical Behavior for Materials, Xi''an Jiaotong University, Xi''an, 710049, China;2. School of Mechanical and Electrical Engineering, Xi''an University of Architecture and Technology, Xi''an, 710055, China;3. Baoji Titanium Industry Group Clad Metal Plate Co., Ltd., Baoji, Shaanxi, 721014, China;1. College of Materials Science and Engineering, Taiyuan University of Technology, 79 West Yingze Street, 030024, Taiyuan, Shanxi Province, China;2. Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, 79 West Yingze Street, 030024 Taiyuan, Shanxi Province, China;3. Shanxi Key Laboratory of Advanced Magnesium-based Materials, Ministry of Education, 79 West Yingze Street, 030024 Taiyuan, Shanxi Province, China;4. China Ship Development and Design Center, 268 Zhang Zhidong Road, Wuchang District, Wuhan, Hubei, China;5. Department of Mechanical Engineering, Pennsylvania State University Erie, The Behrend College, Erie, PA 16563, USA;1. College of Materials Science and Engineering, Xi’an University of Technology, Xi’an 710048, China;2. School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty, Queensland University of Technology(QUT), Brisbane, QLD 4001, Australia |
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| Abstract: | In this study, microstructural inhomogeneity and mechanical properties of explosive welded 2205 stainless steel/X65 pipe steel bimetallic sheets were investigated. The explosion-bonded 2205/X65 bimetallic sheets had good shear strength. The tensile shear fracture primarily occurred in the interior of X65 material and primarily exhibited dimple morphology. Fine crystal grains in the 0.5–2 μm range were found all over the narrow localized melted zone near the 2205/X65 interface, whereas a coarse columnar crystal structure growing along the perpendicular direction to the interface formed in the wider localized melted zone. Quasi-cleavage fracture morphology was observed in the coarse columnar crystal region after the stratified tensile test. The junction of the three regions near the interface with large differences in morphology was the weak point in the bimetallic sheet, where Y-shaped cracking easily occurred under a loading force. Stratified tensile test and micro-hardness tests for the explosively welded bimetallic sheet showed that severe hardening occurred in the 2205 cladding, and the most severe metal hardening occurred near the interface. Tests for 45° face bending and root bending tests were conducted under extreme conditions. The results showed that voids were prone to appeared in the peninsula and island morphologies near the interface. |
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| Keywords: | Bimetallic sheet Explosive welding Microstructure Mechanical property Inhomogeneity |
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