Mechanical Properties and Electrical Conductivity of α plus β Titanium Alloy Sheet Regulated by Heat Treatment

doi:10.11900/0412.1961.2022.00490

IMR OpenIR

	Mechanical Properties and Electrical Conductivity of α plus β Titanium Alloy Sheet Regulated by Heat Treatment
	Zhang, Shuqian 1,2; Ma, Yingjie 2; Wang, Qian 2; Qi, Min 1,2; Huang, Sensen 2; Lei, Jiafeng 2; Yang, Rui
通讯作者	Ma, Yingjie(yjma@imr.ac.cn)
	2024-12-01
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	60 期号:12 页码:160
摘要	Eddy current loss, which produces Joule heat and reduces transmission efficiency, is inevitable when the magnetic coupling is running. Magnetic couplings with high electrical resistivity alloys, such as titanium alloy, have been proven to be effective in suppressing the eddy currents. The Ti-6Al-3Mo-2V-1Cr-2Sn-2Zr alloy sheet was a alpha + beta titanium alloy for marine engineering with high specific strength and electrical resistivity, which was used in magnetic couplings to suppress the eddy currents. In this study, the effect of annealing temperature on the microstructure, mechanical properties, and electrical conductivity of the Ti-6Al-3Mo-2V-1Cr-2Sn-2Zr alloy sheet was investigated. The results revealed that the band structure was arranged along the rolling direction (RD), and the as-rolled titanium alloy sheet showed a typical T-type texture with the c-axis of the alpha phase approximately parallel to the transverse direction (TD). A considerable increase in tensile strength and decrease in elongation after alpha + beta region (850-920 degrees C) annealing was thought to result from the strengthening of secondary alpha/beta interfaces in the bimodal structure. Simultaneously, the alpha phase showed both T-type and R-type textures, which also resulted in higher yield strength along the TD of the sheet. Additionally, when the sheet suffered a beta phase region annealing (950-1000 degrees C), the elongation immediately decreased due to the coarseness and precipitation of the secondary alpha and grain boundary alpha phases, respectively. Meanwhile, the annealed sheet showed an R-type and a new B-type texture components with basal poles rotated 20 degrees-30 degrees away from the normal direction (ND) toward the RD under the influence of variant selection of secondary alpha phase. However, the yield strength along the TD was still higher than that in the RD, indicating that the effect of texture on yield strength anisotropy was reduced. Finally, the electrical resistivity analysis of the titanium alloy sheet indicated that the electrical resistivity along the RD of the sheet was higher when the band structure was formed and the c-axis of the alpha phase was concentrated in the TD. However, the disappearance of the band structure and the increase in the volume fraction of the R-type texture will reduce the anisotropy of electrical resistivity.
关键词	alpha plus beta titanium alloy sheet annealing treatment microstructure anisotropy tensile property electrical resistivity
DOI	10.11900/0412.1961.2022.00490
收录类别	SCI
语种	英语
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001381258500004
出版者	SCIENCE PRESS
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/181181
专题	中国科学院金属研究所
通讯作者	Ma, Yingjie
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Shuqian,Ma, Yingjie,Wang, Qian,et al. Mechanical Properties and Electrical Conductivity of α plus β Titanium Alloy Sheet Regulated by Heat Treatment[J]. ACTA METALLURGICA SINICA,2024,60(12):160.
APA	Zhang, Shuqian.,Ma, Yingjie.,Wang, Qian.,Qi, Min.,Huang, Sensen.,...&Yang, Rui.(2024).Mechanical Properties and Electrical Conductivity of α plus β Titanium Alloy Sheet Regulated by Heat Treatment.ACTA METALLURGICA SINICA,60(12),160.
MLA	Zhang, Shuqian,et al."Mechanical Properties and Electrical Conductivity of α plus β Titanium Alloy Sheet Regulated by Heat Treatment".ACTA METALLURGICA SINICA 60.12(2024):160.