Superplastical Deformation Behavior and Microstructure Evolution of Ti65 Ti-alloy

doi:10.11901/1005.3093.2024.319

Chinese Journal of Materials Research

2025, Vol. 39

Issue (7): 489-498 DOI: 10.11901/1005.3093.2024.319

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Superplastical Deformation Behavior and Microstructure Evolution of Ti65 Ti-alloy

ZHANG Ning¹^,²^,³(

), WANG Yaoqi¹^,²^,³, YANG Yi⁴, MU Yanhong¹^,²^,³, LI Zhen¹^,²^,³, CHEN Zhiyong⁵

^1.AVIC Manufacturing Technology Institute, Beijing 100024, China
^2.Aeronautical Key Laboratory for Plastic Forming Technology, Beijing 100024, China
^3.Beijing Key Laboratory of Digital Forming Technology and Equipment, Beijing 100024, China
^4.Shanxi Aircraft Industry Co., Ltd., Hanzhong 710048, China
^5.Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China

Cite this article:

ZHANG Ning, WANG Yaoqi, YANG Yi, MU Yanhong, LI Zhen, CHEN Zhiyong. Superplastical Deformation Behavior and Microstructure Evolution of Ti65 Ti-alloy. Chinese Journal of Materials Research, 2025, 39(7): 489-498.

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Abstract

The superplastic deformation behavior of Ti65 Ti-alloy was studied via tensile testing in temperature range of 900~960 ^oC at strain rate range of 0.001~0.03 s^-1 in terms of the effect of temperature and strain rate on the superplastic properties of the alloy. Meanwhile, the strain rate sensitivity index m, stress index n and deformation activation energy Q of the alloy were acquired. The grain size, grain orientation and distribution in the area nearby the tensile fracture of the test alloy were characterized by electron back-scattered diffraction (EBSD) technique. The results show that with the increase of temperature the flow stress of Ti65 Ti-alloy is reduced and the elongation is elevated. With the reducing strain rate, the flow stress decreases, and the elongation first increases and then decreases. At the deformation temperature of 960 ^oC and strain rate of 0.003 s^-1, the maximum elongation of the alloy reached 1108%, namely its superplasticity is the best. Correspondingly, the strain rate sensitivity index m is 0.42, the stress index n is 2.5, and the superplastic deformation activation energy Q is 393 kJ/mol, which illuminated that the predominate deformation mechanism is grain boundary sliding and dislocation sliding for Ti65 Ti-alloy. During the superplastic deformation process under different conditions, the Ti65 Ti-alloy undergoes significant dynamic recrystallization, generating uniformly distributed fine equiaxed grains. As the deformation temperature rising and the strain rate reducing, the degree of discontinuous dynamic recrystallization enhances. The grain size of Ti65 Ti-alloy increases with the increase of deformation temperature, and while increases first and then decreases with the increase of strain rate.

Key words: metallic materials Ti65 titanium alloy superplasticity deformation behavior microstructure evolution dynamic recrystallization

Received: 24 July 2024

ZTFLH:

TG132

Fund: Aeronautical Science Foundation of China(2022Z047025001)

Corresponding Authors: ZHANG Ning, Tel: 13811524062, E-mail: zn64112@163.com

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	ZHANG Ning
	WANG Yaoqi
	YANG Yi
	MU Yanhong
	LI Zhen
	CHEN Zhiyong

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https://www.cjmr.org/EN/10.11901/1005.3093.2024.319 OR https://www.cjmr.org/EN/Y2025/V39/I7/489

Table 1 Chemical composition of Ti65 titanium alloy (mass fraction, %)

Fig.1 Microstructure of Ti65 alloy sheet

Fig.2 Dimensions of tensile specimen(unit：mm)

Fig.3 Macroscopic images for elongated specimens under different temperatures at stain rate of 0.003 s^-1 (a) and under different strain rates at temperature of 940 ^oC (b)

Fig.4 True stress-true strain curves of Ti65 alloy under different temperatures at stain rate of 0.003 s^-1 (a) and under different strain rates at temperature of 940 ^oC (b)

Fig.5 Effect of different temperatures on peak stress (a) and elongation (b) of Ti65 alloy

Fig.6 Effect of different strain rates on peak stress (a) and elongation (b) of Ti65 alloy

Fig.7 $l n σ - l n ε ˙$ curve

Fig.8 $l n σ - 1 / T$ curve

Fig.9 Grain morphology distributions of Ti65 alloy at different temperatures
(a) 900 ^oC (b) 920 ^oC (c) 940 ^oC (d) 960 ^oC

Fig.10 Misorientation distributions of Ti65 alloy at different temperatures
(a) original (b) 900 ^oC (c) 920 ^oC (d) 940 ^oC (e) 960 ^oC

Fig.11 Relationship curve between average grain sizes and temperatures

Fig.12 Grain morphology distributions of Ti65 alloy at different strain rates
(a) 0.001 s^-1 (b) 0.01 s^-1 (c) 0.03 s^-1

Fig.13 Misorientation distribution of Ti65 alloy at different strain rates (a) 0.001 s^-1, (b) 0.01 s^-1, (c) 0.03 s^-1

Fig.14 Relationship curve between average grain sizes and strain rates

[1]	Liu Z G, Li P J, Yin X Y, et al. Effects of deformation parameters on the superplastic behavior and microstructure evolution of TA32 alloy [J]. Rare Metal Mat. Eng., 2018, 47(11): 3473
	刘章光, 李培杰, 尹西岳等. 变形参数对TA32合金的超塑性变形行为及微观组织演化的影响 [J]. 稀有金属材料与工程, 2018, 47(11): 3473
[2]	Zhang T, Liu Y, Sanders D G, et al. Development of fine-grain size titanium 6Al-4V alloy sheet material for low temperature superplastic forming [J]. Mater. Sci. Eng., A, 2014, 608: 265
[3]	Kaibyshev O A, Safiullin R V, Lutfullin R Y, et al. Advanced superplastic forming and diffusion bonding of titanium alloy [J]. Mater. Sci. Technol., 2013, 22: 343
[4]	Wu D P, Wu Y, Chen M H, et al. High temperature flow behavior and microstructure evolution of TC31 titanium alloy sheets [J]. Rare Metal Mat. Eng., 2019, 48(12): 3901
	吴迪鹏, 武永, 陈明和等. TC31钛合金板材高温流变行为及组织演变研究 [J]. 稀有金属材料与工程, 2019, 48(12): 3901
[5]	Chen C, Chen M H, Xie L S, et al. Flow behavior of TA32 titanium alloy at high temperature and its constitutive model [J]. Rare Metal Mat. Eng., 2019, 48(3): 827
	陈灿, 陈明和, 谢兰生等. TA32新型钛合金高温流变行为及本构模型研究 [J]. 稀有金属材料与工程, 2019, 48(3): 827
[6]	Liu Y Y, Chen Z Y, Jin T N, et al. Present situation and prospect of 600 ^oC high-temperature Titanium alloys [J]. Mater. Rev., 2018, 32(11): 1863
	刘莹莹, 陈子勇, 金头男等. 600 ℃高温钛合金发展现状与展望 [J]. 材料导报, 2018, 32(11): 1863
[7]	Wanjara P, Jahazi M, Monajati H, et al. Hot working behavior of near-α alloy IMI834 [J]. Mater. Sci. Eng., A, 2005, 396: 50
[8]	Singh N, Singh V. Effect of temperature on tensile properties of near-α alloy Timetal 834 [J]. Mater. Sci. Eng., A, 2008, 485(1-2):130
[9]	Boyer R R. An overview on the use of titanium in the aerospace industry [J]. Mater. Sci. Eng., A, 1996, 213(1-2): 103
[10]	Huang D, Yang S L, Ma L, et al. Current research status and development of high-temperature Titanium alloys [J]. Iron Steel Vanadium Titanium, 2018, 39(1): 60
	黄栋, 杨绍利, 马兰等. 高温钛合金的研究现状及其发展 [J]. 钢铁钒钛, 2018, 39(1): 60
[11]	Chen Z Y, Liu Y Y, Jin Y F, et al. Research on 650 ^oC high temperature titanium alloy technology for aero-engine [J]. Aeronaut. Manufact. Technol., 2019, 62(19): 22
	陈子勇, 刘莹莹, 靳艳芳等. 航空发动机用耐650 ℃高温钛合金研究现状与进展 [J]. 航空制造技术, 2019, 62(19): 22
[12]	Wang Q J, Liu J R, Yang R. High temperature titanium alloys: status and perspective [J]. J. Aeronaut. Mater., 2014, 34(4): 1
	王清江, 刘建荣, 杨锐. 高温钛合金的现状与前景 [J]. 航空材料学报, 2014, 34(4): 1 doi: 10.11868/j.issn.1005-5053.2014.4.001
[13]	Wu X Y, Chen Z Y, Cheng C, et al. Effects of heat treatment on microstructure, texture and tensile properties of Ti65 alloy [J]. Chin. J. Mater. Res., 2019, 33(10): 785 doi: 10.11901/1005.3093.2019.110
	吴汐玥, 陈志勇, 程超等. 热处理对Ti65钛合金板材的显微组织,织构及拉伸性能的影响 [J]. 材料研究学报, 2019, 33(10): 785 doi: 10.11901/1005.3093.2019.110
[14]	Yue K. Study on microstructure and key high temperature mechanical properties of Ti65 alloy [D]. Hefei: University of Science and Technology of China, 2019.
	岳颗. Ti65合金显微组织及关键高温力学性能研究 [D]. 合肥: 中国科学技术大学, 2019
[15]	Li P, Xu H F, Meng M, et al. Hot deformation behavior and constitutive equation of Ti65 titanium alloy [J]. J. Plast. Eng., 2024, 31(2): 120
	李萍, 许海峰, 孟淼等. Ti65钛合金热变形行为及本构方程 [J]. 塑性工程学报, 2024, 31(2): 120
[16]	Feng Y, Chen Z Y, Jiang S M, et al. Effect of a NiCrAlSiY coating on cyclic oxidation and room temperature tensile properties of Ti65 alloy plate [J]. Chin. J. Mater. Res., 2023, 37(7): 523 doi: 10.11901/1005.3093.2022.145
	冯叶, 陈志勇, 姜肃猛等. 一种NiCrAlSiY涂层对Ti65钛合金板材循环氧化和室温力学性能的影响 [J]. 材料研究学报, 2023, 37(7): 523
[17]	Lin D L, Sun F. Superplasticity in a large-grained TiAl alloy [J]. Intermetallics, 2004, 12(7-9):875
[18]	Yang X K, Wang K S, Shi J M, et al. High temperature deformation behaviour of TC17 titanium alloy [J]. Rare Metal Mat. Eng., 2018, 47(9): 2895
	杨晓康, 王快社, 史佳敏等. TC17钛合金高温变形行为研究 [J]. 稀有金属材料与工程, 2018, 47(9): 2895
[19]	Zhang P. Micro-orientation evolution and deformation mechanism of Al-Li alloy 5A90 during superplastic deformation [D]. Changsha: Zhong Nan University, 2014
	张盼. 5A90铝锂合金超塑性变形微取向演变及变形机理 [D]. 长沙: 中南大学, 2014
[20]	Zhang K F, Yin D L, Wang G F, et al. Microstructure evolution and fracture behavior in superplastic deformation of hot-rolled AZ31 Mg alloy [J]. J. Aeronaut. Mater., 2005, 25(1): 5
	张凯锋, 尹德良, 王国峰等. 热轧AZ31镁合金超塑变形中的微观组织演变及断裂行为 [J]. 航空材料学报, 2005, 25(1): 5
[21]	Zhang T Y. Study on fine-grain size titanium 6Al-4V alloy material for low temperature superplasticity [D]. Changsha: Zhong Nan University, 2014
	张拓阳. 细晶TC4合金的低温超塑性变形研究 [D]. 长沙: 中南大学, 2014
[22]	Li M Z, Bai C G, Zhang Z Q, et al. Hot Deformation Behavior of TC₂ Titanium Alloy [J]. Chin. J. Mater. Res., 2020, 34(12): 892
	李沐泽, 柏春光, 张志强等. TC₂钛合金的高温热变形行为 [J]. 材料研究学报, 2020, 34(12): 892 doi: 10.11901/1005.3093.2020.127
[23]	Liang H Q, Guo H Z, Nan Y, et al. The identification of dynamic recrystallization type during hot deformation process [J]. Science China, 2014, 44(12): 1309
	梁后权, 郭鸿镇, 南洋等. 高温变形过程中的动态再结晶类型识别 [J]. 中国科学, 2014, 44(12): 1309
[24]	Lin Y C, He D G, Chen M S, et al. EBSD analysis of evolution of dynamic recrystallization grains and δ phase in a nickel-based superalloy during hot compressive deformation [J]. Mater. Des., 2016, 97: 13
[25]	Sakai T, Belyakov A, Kaibyshev R, et al. Dynamic and post-dynamic recrystallization under hot, cold and severe plastic deformation conditions [J]. Prog. Mater. Sci., 2014, 60: 130
[26]	McQueen H J. Development of dynamic recrystallization theory [J]. Mater. Sci. Eng., A, 2004, 387-389: 203
[27]	Li D F, Guo S L, Peng H J, et al. The microstructure evolution and nucleation mechanisms of dynamic recrystallization in hot-deformed Inconel 625 superalloy [J]. Mater. Des., 2011, 32: 696
[28]	Wang Y, Shao W Z, Zhen L, et al. Flow behavior and microstructures of superalloy 718 during high temperature deformation [J]. Mater. Sci. Eng., A, 2008, 497: 479

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