Effect of Tantalum Content on Mechanical and Corrosion Behavior of Ti-6Al-3Nb-2Zr-1Mo-xTa Alloys

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	Effect of Tantalum Content on Mechanical and Corrosion Behavior of Ti-6Al-3Nb-2Zr-1Mo-xTa Alloys
	Wang, Qi 1,2; Ren, Junqiang 3; Zhang, Binbin 2; Wu, Yukun 2; Ye, Miao 1; Shao, Shan 3
刊名	Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
	2021-03-01
卷号	50 期号:3 页码:853-859
关键词	Aluminum alloys Aluminum metallography Balancing Corrosion resistance Corrosion resistant alloys Corrosive effects Electron diffraction Fracture toughness Lamellar structures Marine applications Microhardness Molybdenum alloys Molybdenum metallography Niobium alloys Niobium metallography Seawater corrosion Tantalum alloys Tantalum metallography Tensile strength Titanium alloys Titanium metallography Yttrium metallography Zircaloy Zirconium metallography Alpha/beta interface Bi-modal structures Charpy impact toughness Corrosion performance Potential difference Potentiodynamic polarization tests Selected area electron diffraction Ultimate tensile strength
ISSN号	1002-185X
英文摘要	The microstructure, tensile properties, Charpy impact toughness and corrosion resistance of Ti-6Al-3Nb-2Zr-1Mo-xTa (x=0, 0.2, 0.5, 1.0, 3.0, 5.0) alloys were investigated. The results indicate that except Ti-6Al-3Nb-2Zr-1Mo-5Ta alloy with lamellar structure, the bimodal structure is observed in Ti-6Al-3Nb-2Zr-1Mo-xTa (x=0, 0.2, 0.5, 1.0, 3.0) after hot deformation at α+β region. The results of XRD patterns and selected area electron diffraction indicate that no new phase is identified after adding Ta, although the peaks of both α and β phases shift toward the low angle side with the increase of Ta content. For the Ti-6Al-3Nb-Zr-1Mo-xTa alloy with bimodal structure, the yield strength (YS), ultimate tensile strength (UTS) and microhardness increase due to the increase of molybdenum equivalent (Mo[eq]). The influence trend of the Ta content on impact absorb energy is opposite to that on YS, UTS and microhardness. YS, UTS and microhardness are in consistent with the area of shear lip region in the impact fracture surface. When the Ta content is more than 1.0wt%, the corrosion resistance of Ti-6Al-3Nb-2Zr-1Mo-xTa alloys decreases due to the increase of standard balancing potential difference between α and β phases. After potentiodynamic polarization tests, the sample surface area is covered with lots of corrosion pits, which are mainly distributed in the αp grain interior and α/β interface. Combining YS, impact toughness and corrosion performance, Ti-6Al-3Nb-2Zr-1Mo-1Ta alloy exhibits the optimized compatibility, suggesting its promising potential for marine applications. Copyright © 2021, Northwest Institute for Nonferrous Metal Research. Published by Science Press. All rights reserved.
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	Science Press
WOS记录号	WOS:000641439800017
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/148377]
专题	省部共建有色金属先进加工与再利用国家重点实验室
作者单位	1.Huanghuai University, Zhumadian; 463000, China; 2.Luoyang Ship Materials Research Institute, Luoyang; 471039, China 3.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Department of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou; 730050, China;
推荐引用方式 GB/T 7714	Wang, Qi,Ren, Junqiang,Zhang, Binbin,et al. Effect of Tantalum Content on Mechanical and Corrosion Behavior of Ti-6Al-3Nb-2Zr-1Mo-xTa Alloys[J]. Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering,2021,50(3):853-859.
APA	Wang, Qi,Ren, Junqiang,Zhang, Binbin,Wu, Yukun,Ye, Miao,&Shao, Shan.(2021).Effect of Tantalum Content on Mechanical and Corrosion Behavior of Ti-6Al-3Nb-2Zr-1Mo-xTa Alloys.Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering,50(3),853-859.
MLA	Wang, Qi,et al."Effect of Tantalum Content on Mechanical and Corrosion Behavior of Ti-6Al-3Nb-2Zr-1Mo-xTa Alloys".Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering 50.3(2021):853-859.