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| Effect of Fe- and Cu-content on Microstructure and Mechanical Properties of TC10 Ti-alloy Bars |
HU Ming1, ZHANG Xinquan2, LI Weiqiang3, YANG Xiaokang4, HUANG Jinhu5, LEI Xiaofei1, QIU Jianke1, DONG Limin1( ) |
1.Shi -Changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
2.China Aviation Industry Corporation Xi'an Aircraft Design and Research Institute, Xi'an 710089, China
3.Beijing Hangwei High Tech Connection Technology Co. Ltd., Beijing 102600, China
4.Xi'an Saitesimai Titanium Industry Co. Ltd., Xi'an 710016, China
5.Aerospace Precision Industry Co. Ltd., Tianjin 300300, China |
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Cite this article:
HU Ming, ZHANG Xinquan, LI Weiqiang, YANG Xiaokang, HUANG Jinhu, LEI Xiaofei, QIU Jianke, DONG Limin. Effect of Fe- and Cu-content on Microstructure and Mechanical Properties of TC10 Ti-alloy Bars. Chinese Journal of Materials Research, 2025, 39(3): 217-224.
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Abstract The influence of Fe- and Cu-content on the microstructure and mechanical properties of TC10 alloy bars was investigated by means of scanning electron microscopy, EDS analysis of transmission electron microscopy, and mechanical testing machine. The results indicate that for the as rolled and annealed TC10 Ti-alloys, with the increasing Fe- and Cu-content, their yield strength and tensile strength increase, while the changes in elongation and cross-sectional shrinkage at break are not significant. For the solid solution aged TC10 alloy, Ti is evenly distributed in both βt and αp phases, Al is less distributed at grain boundaries, while V, Fe, and Cu elements are more abundant at the grain boundaries in βt phase. For TC10 alloys with the same Fe- and Cu-content, with the increasing solid solution temperature, their yield strength and tensile strength increase, while the elongation and cross-sectional shrinkage decrease. For TC10 alloys subjected to solid solution treatment at the same temperature, with the increase of Fe and Cu content, their yield strength and tensile strength increase, while the elongation and cross-sectional shrinkage at break decrease. The higher the solid solution temperature, the more significant the influence of alloying elements Fe and Cu on the strength and plasticity of the alloy. Being subjected to solid solution treatment at 900 oC, the alloy with 0.65% Fe and 0.65% Cu can achieve superior comprehensive mechanical properties, with yield strength, tensile strength, elongation, and cross-sectional shrinkage at break of 1392 ± 3 MPa, 1435.5 ± 0.5 MPa, (8 ± 1)% and (21.5 ± 1.5)%, respectively.
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Received: 13 May 2024
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| Fund: National Key Research and Development Program Youth Scientist Project of China(2022YFB3708300);Youth Innovation Promotion Association of Chinese Academy of Sciences(2022188) |
Corresponding Authors:
DONG Limin, Tel: (024)23971962, E-mail: lmdong@imr.ac.cn
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