Ring Rolling Forming and Properties of Ti2AlNb Special Shaped Ring Prepared by Powder Metallurgy

doi:10.11900/0412.1961.2019.00015

Acta Metall Sin

2019, Vol. 55

Issue (6): 729-740 DOI: 10.11900/0412.1961.2019.00015

Current Issue | Archive | Adv Search

Ring Rolling Forming and Properties of Ti₂AlNb Special Shaped Ring Prepared by Powder Metallurgy

Zhengguan LU^1,²,Jie WU¹,Lei XU¹(

),Xiaoxiao CUI¹,Rui YANG¹

1. Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
2. School of Materials Science and Engineering, University of Science and Technology of China, Shenyang 110016, China

Cite this article:

Zhengguan LU,Jie WU,Lei XU,Xiaoxiao CUI,Rui YANG. Ring Rolling Forming and Properties of Ti₂AlNb Special Shaped Ring Prepared by Powder Metallurgy. Acta Metall Sin, 2019, 55(6): 729-740.

Download:

HTML

PDF(23413KB)
Export: BibTeX | EndNote (RIS)

Abstract

Ti₂AlNb alloy was considered as the candidate material to replace superalloys such as GH4169 in gas turbine engine applications due to higher strength-weight ratio at elevated temperatures. Powder metallurgy (PM) offers the potential for solving many of the problems associated with the large ingots, such as center-line porosity and chemical inhomogeneity. In order to study the feasibility of preparing Ti₂AlNb special shaped ring with large size, PM + ring rolling combined process is considered as a potential method and discussed in this work. PM Ti₂AlNb alloy and special shaped ring (D>800 mm) with a nominal composition of Ti-22Al-24.5Nb-0.5Mo (atomic fraction, %) were prepared from pre-alloyed powder using hot isostatic pressing (HIP). Hot compression tests of PM Ti₂AlNb alloy and wrought alloy with the same chemical composition were conducted on Gleeble-3800 testing machine under 930~1050 ℃ and 0.001~1 s^-1 conditions. Ring rolling was conducted on PM Ti₂AlNb special shaped ring by horizontal rolling machine, and the microstructure evolution and properties performance of PM ring after rolling forming process were studied. The results show that the processing window for PM Ti₂AlNb alloy is broader than that for wrought alloys, and wrought Ti₂AlNb alloy is easier to crack at low temperature or relative high strain rate. PM Ti₂AlNb alloy has more homogeneous chemical composition and uniform α₂ phase distribution. Stress instability phenomenon of PM Ti₂AlNb alloy is more obvious than that of wrought alloy which is related to phase transition of Ti₂AlNb alloy. Optimized deformation temperature for PM Ti₂AlNb special shaped ring was set as 1030~1045 ℃ with reference to the hot compression results. Ti₂AlNb special shaped ring after two rolling steps has no any kinds of defects presented by X-ray testing, ultrasonic testing and fluorescence detection. O laths inside PM Ti₂AlNb alloy become shorter and narrow, and α₂ phase tends to be a coarser and spherical structure due to the hot deformation. After a typical heat treatment (980 ℃, 2 h, AC+830 ℃, 24 h, AC), nearly B2+O microstructure is obtained in Ti₂AlNb special shaped ring. Compared with the undeformed alloy, tensile ductility at room temperature and 650 ℃ of Ti₂AlNb ring after hot deformation improves due to the refined O phase structure.

Key words: Ti₂AlNb powder metallurgy hot isostatic pressing ring rolling forming

Received: 17 January 2019

ZTFLH:

TG337

	Service

	E-mail this article
	Add to citation manager
	E-mail Alert
	RSS
	Collect articles（）
	Articles by authors
	Zhengguan LU
	Jie WU
	Lei XU
	Xiaoxiao CUI
	Rui YANG

URL:

https://www.ams.org.cn/EN/10.11900/0412.1961.2019.00015 OR https://www.ams.org.cn/EN/Y2019/V55/I6/729

Fig.1 Differential size distribution of Ti₂AlNb pre-alloyed powder

Table 1 Chemical compositions of Ti₂AlNb pre-alloyed powder and special shaped ring billet

Fig.2 Low (a) and high (b) magnified SEM images of Ti₂AlNb pre-alloyed powder prepared by electrode induction melting gas atomization (EIGA) method

Fig.3 SEM images of microstructures of wrought (a) and hot isostatic pressing (HIP) (b) Ti₂AlNb samples

Fig.4 Relative density distributions of Ti₂AlNb powder metallurgy (PM) alloy on d=3 mm, R=20 mm (a) and d=8 mm, R=50 mm (b) container conditions (d—thickness, R—radius）

Fig.5 Low (a) and high (b) magnified SEM images of microstructure of Ti₂AlNb PM special shaped ring billet

Table 2 Tensile properties of Ti₂AlNb special shaped ring billet and cylindrical billet

Fig.6 SEM images of microstructures of wrought (a) and HIP (b) Ti₂AlNb alloys for hot compression tests

Table 3 Peak stresses of Ti₂AlNb PM alloy and wrought alloy under different deformation conditions

Fig.7 Morphologies of Ti₂AlNb samples after hot compression tests at different temperatures and 0.1 s^-1

Fig.8 Low (a, b) and high (c, d) magnified SEM images of microstructures of wrought (a, c) and HIP (b, d) Ti₂AlNb alloys after 1030 ℃ and 1 s^-1 compression test

Fig.9 Micro-CT pictures of wrought (a) and HIP (b) Ti₂AlNb alloys

Fig.10 Counter maps of strain rate sensitivity value (m) for HIP (a) and wrought (b) Ti₂AlNb alloys

Fig.11 Rolling pictures of Ti₂AlNb PM ring(a) rectangular ring with crack(b) ring rolling process of special shaped ring(c) special shaped ring after machining

Fig.12 Low (a, c) and high (b, d) magnified SEM images of Ti₂AlNb PM alloy

Table 4 Tensile properties of Ti₂AlNb special shaped ring

Fig.13 SEM images of Ti₂AlNb PM alloy after HIP+ring rolled process (a) and HIP+ring rolled+HT process (b, c)

Fig.14 TEM images of Ti₂AlNb alloy after HIP (a), HIP+ring rolled (b) and HIP+ring rolled+HT (c) processes

[1]	Banerjee D, Gogia A K, Nandi T K, et al. A new ordered orthorhombic phase in a Ti3Al-Nb alloy [J]. Acta Metall., 1988, 36: 871
[2]	Germann L, Banerjee D, Guédou J Y, et al. Effect of composition on the mechanical properties of newly developed Ti2AlNb-based titanium aluminide [J]. Intermetallics, 2005, 13: 920
[3]	Kumpfert J. Intermetallic alloys based on orthorhombic titanium aluminide [J]. Adv. Eng. Mater., 2001, 3: 851
[4]	Shen J, Feng A H. Recent advances on microstructural controlling and hot forming of Ti2AlNb-based alloys [J]. Acta Metall. Sin., 2013, 49: 1286
[4]	(沈军, 冯艾寒. Ti2AlNb基合金微观组织调制及热成形研究进展 [J]. 金属学报, 2013, 49: 1286)
[5]	Chen W, Li J W, Xu L, et al. Development of Ti2AlNb alloys: Opportunities and challenges [J]. Adv. Mater. Proc., 2014, 172: 23
[6]	Emura S, Araoka A, Hagiwara M. B2 grain size refinement and its effect on room temperature tensile properties of a Ti-22Al-27Nb orthorhombic intermetallic alloy [J]. Scr. Mater., 2003, 48: 629
[7]	Tang F, Nakazawa S, Hagiwara M. The effect of quaternary additions on the microstructures and mechanical properties of orthorhombic Ti2AlNb-based alloys [J]. Mater. Sci. Eng., 2002, A329-331: 492
[8]	Wang Y. The study on alloying, hot deformation behaviors and mechanical properties of Ti2AlNb based alloys [D]. Shenyang: Institute of Metal Research, Chinese Academy of Sciences, 2012
[8]	(王永. Ti2AlNb基合金的合金化、热加工及力学性能研究 [D]. 沈阳: 中国科学院金属研究所, 2012)
[9]	Du G, Cui L L, Lei Q, et al. Research and development of orthorhombic titanium aluminide [J]. Mater. China, 2018, 37: 68
[9]	(杜刚, 崔林林, 雷强等. O相合金Ti2AlNb的研究进展 [J]. 中国材料进展, 2018, 37: 68)
[10]	Yang R. Advances and challenges of TiAl base alloys [J]. Acta Metall. Sin., 2015, 51: 129
[10]	(杨锐. 钛铝金属间化合物的进展与挑战 [J]. 金属学报, 2015, 51: 129)
[11]	Zhang J W, Li S Q, Liang X B, et al. Research and application of Ti3Al and Ti2AlNb based alloys [J]. Chin. J. Nonferrous Met., 2010, 20: 336
[11]	(张建伟, 李世琼, 梁晓波等. Ti3Al和Ti2AlNb基合金的研究与应用 [J]. 中国有色金属学报, 2010, 20: 336)
[12]	Tai Q A, Li Z H, Sun L Q, et al. Application and prospect of aeroengine plastic forming technology [J]. Aeronaut. Manuf. Technol., 2014, (7): 34
[12]	(邰清安, 李治华, 孙立群等. 航空发动机塑性成形技术的应用与展望 [J]. 航空制造技术, 2014, (7): 34)
[13]	Tian W, Zhong Y, Liang X B, et al. Relationship between forming process and microstructure-properties of Ti-22Al-25Nb alloy ring [J]. Trans. Mater. Heat Treat., 2014, 35(10): 49
[13]	(田伟, 钟燕, 梁晓波等. Ti-22Al-25Nb合金环形件成形工艺与组织性能关系 [J]. 材料热处理学报, 2014, 35(10): 49)
[14]	Boehlert C J. The phase evolution and microstructural stability of an orthorhombic Ti-23Al-27Nb alloy [J]. J. Phase Equilib., 1999, 20: 101
[15]	Lasalmonie A. Intermetallics: Why is it so difficult to introduce them in gas turbine engines? [J]. Intermetallics, 2006, 14: 1123
[16]	Jiao X Y, Kong B B, Tao W, et al. Effects of annealing on microstructure and deformation uniformity of Ti-22Al-24Nb-0.5Mo laser-welded joints [J]. Mater. Des., 2017, 130: 166
[17]	Xu L, Guo R P, Wu J, et al. Progress in hot isostatic pressing technology of titanium alloy powder [J]. Acta Metall. Sin., 2018, 54: 1537
[17]	(徐磊, 郭瑞鹏, 吴杰等. 钛合金粉末热等静压近净成形研究进展 [J]. 金属学报, 2018, 54: 1537)
[18]	Samarov V, Seliverstov D, Froes F H. Fabrication of near-net-shape cost-effective titanium components by use of prealloyed powders and hot isostatic pressing [A]. Titanium Powder Metallurgy [C]. Oxford: Butterworth-Heinemann, 2015: 313
[19]	Xu L, Guo R P, Bai C G, et al. Effect of hot isostatic pressing conditions and cooling rate on microstructure and properties of Ti-6Al-4V alloy from atomized powder [J]. J. Mater. Sci. Technol., 2014, 30: 1289
[20]	Wu J, Xu L, Lu B, et al. Preparation of Ti2AlNb alloy by powder metallurgy and its rupture lifetime [J]. Chin. J. Mater.
[20]	(吴杰, 徐磊, 卢斌等. 粉末冶金Ti2AlNb合金的制备及持久寿命 [J]. 材料研究学报, 2014, 28: 387)
[21]	Lu Z G, Wu J, Guo R P, et al. Hot deformation mechanism and ring rolling behavior of powder metallurgy Ti2AlNb intermetallics [J]. Acta Metall. Sin. (Engl. Lett.), 2017, 30: 621
[22]	Qi C. GH4169-type disk parts forging method, involves baiting GH4169-type bar prepared by cast condition or powder metallurgy process into primary bar ingot, and adding bar ingot into box type heating furnace of specific degrees centigrade [P]. Chin Pat, CN102764837A, 2013
[23]	Lu Z G, Wu J, Xu L, et al. Comparative study on hot workability of powder metallurgy Ti-22Al-24Nb-0.5Mo alloy [J]. Chin. J. Mater. Res., 2015, 29: 445
[23]	(卢正冠, 吴杰, 徐磊等. 粉末Ti-22Al-24Nb-0.5Mo合金热变形能力的对比研究 [J]. 材料研究学报, 2015, 29: 445)
[24]	Wang S G, Wang S C, Zhang L. Application of high resolution transmission X-ray tomography in material science [J]. Acta Metall. Sin., 2013, 49: 897
[24]	(王绍钢, 王苏程, 张磊. 高分辨透射X射线三维成像在材料科学中的应用 [J]. 金属学报, 2013, 49: 897)
[25]	Qiu C L. Net-shape hot isostatic pressing of a nickel-based powder superalloy [D]. Birmingham: University of Birmingham, 2010
[26]	Lang L H, Wang G, Huang X N, et al. Shielding effect of capsules and its impact on mechanical properties of P/M aluminium alloys fabricated by hot isostatic pressing [J]. Chin. J. Nonferrous Met., 2016, 26: 261
[26]	(郎利辉, 王刚, 黄西娜等. 包套在铝合金粉末热等静压成形中的屏蔽效应及其对性能的影响 [J]. 中国有色金属学报, 2016, 26: 261)
[27]	Wu J, Guo R P, Xu L, et al. Effect of hot isostatic pressing loading route on microstructure and mechanical properties of powder metallurgy Ti2AlNb alloys [J]. J. Mater. Sci. Technol., 2017, 33: 172
[28]	Ma X, Zeng W D, Xu B, et al. Characterization of the hot deformation behavior of a Ti-22Al-25Nb alloy using processing maps Based on the murty criterion [J]. Intermetallics, 2012, 20: 1
[29]	Wu Y, Liu G, Liu Z Q, et al. Formability and microstructure of Ti22Al24.5Nb0.5Mo rolled sheet within hot gas bulging tests at constant equivalent strain rate [J]. Mater. Des., 2016, 108: 298
[30]	Jia J B, Zhang K F, Liu L M, et al. Hot deformation behavior and processing map of a powder metallurgy Ti-22Al-25Nb alloy [J]. J. Alloys Compd., 2014, 600: 215
[31]	Yoshizawa M, Ohsawa H. Evaluation of strain-rate sensitivity in superplastic compressive deformation [J]. J. Mater. Process. Technol., 1997, 68: 206

[1]	BAI Jiaming, LIU Jiantao, JIA Jian, ZHANG Yiwen. Creep Properties and Solute Atomic Segregation of High-W and High-Ta Type Powder Metallurgy Superalloy[J]. 金属学报, 2023, 59(9): 1230-1242.
[2]	FENG Aihan, CHEN Qiang, WANG Jian, WANG Hao, QU Shoujiang, CHEN Daolun. Thermal Stability of Microstructures in Low-Density Ti₂AlNb-Based Alloy Hot Rolled Plate[J]. 金属学报, 2023, 59(6): 777-786.
[3]	XU Lei, TIAN Xiaosheng, WU Jie, LU Zhengguan, YANG Rui. Microstructure and Mechanical Properties of Inconel 718 Powder Alloy Prepared by Hot Isostatic Pressing[J]. 金属学报, 2023, 59(5): 693-702.
[4]	ZHU Yunpeng, QIN Jiayu, WANG Jinhui, MA Hongbin, JIN Peipeng, LI Peijie. Microstructure and Properties of AZ61 Ultra-Fine Grained Magnesium Alloy Prepared by Mechanical Milling and Powder Metallurgy Processing[J]. 金属学报, 2023, 59(2): 257-266.
[5]	MA Guonan, ZHU Shize, WANG Dong, XIAO Bolv, MA Zongyi. Aging Behaviors and Mechanical Properties of SiC/Al-Zn-Mg-Cu Composites[J]. 金属学报, 2023, 59(12): 1655-1664.
[6]	YANG Qinzheng, YANG Xiaoguang, HUANG Weiqing, SHI Duoqi. Propagation Behaviors of Small Cracks in Powder Metallurgy Nickel-Based Superalloy FGH4096[J]. 金属学报, 2022, 58(5): 683-694.
[7]	ZHAO Lei, WANG Hui, YANG Lixia, CHEN Xuebin, LANG Runqiu, HE Linfeng, CHEN Dongfeng, WANG Haizhou. First Exploration of Hot Isostatic Pressing High-Throughput Synthesis on Fe-Co-Ni Combinatorial Alloy[J]. 金属学报, 2021, 57(12): 1627-1636.
[8]	BI Sheng, LI Zechen, SUN Haixia, SONG Baoyong, LIU Zhenyu, XIAO Bolv, MA Zongyi. Microstructure and Mechanical Properties of Carbon Nanotubes-Reinforced 7055Al Composites Fabricated by High-Energy Ball Milling and Powder Metallurgy Processing[J]. 金属学报, 2021, 57(1): 71-81.
[9]	HE Siliang, ZHAO Yunsong, LU Fan, ZHANG Jian, LI Longfei, FENG Qiang. Effects of Hot Isostatic Pressure on Microdefects and Stress Rupture Life of Second-Generation Nickel-Based Single Crystal Superalloy in As-Cast and As-Solid-Solution States[J]. 金属学报, 2020, 56(9): 1195-1205.
[10]	HAO Zhibo, GE Changchun, LI Xinggang, TIAN Tian, JIA Chonglin. Effect of Heat Treatment on Microstructure and Mechanical Properties of Nickel-Based Powder Metallurgy Superalloy Processed by Selective Laser Melting[J]. 金属学报, 2020, 56(8): 1133-1143.
[11]	ZHANG Guoqing,ZHANG Yiwen,ZHENG Liang,PENG Zichao. Research Progress in Powder Metallurgy Superalloys and Manufacturing Technologies for Aero-Engine Application[J]. 金属学报, 2019, 55(9): 1133-1144.
[12]	QIN Jiayu, LI Xiaoqiang, JIN Peipeng, WANG Jinhui, ZHU Yunpeng. Microstructure and Mechanical Properties of Carbon Nanotubes (CNTs) Reinforced AZ91 Matrix Composite[J]. 金属学报, 2019, 55(12): 1537-1543.
[13]	FENG Yefei,ZHOU Xiaoming,ZOU Jinwen,WANG Chaoyuan,TIAN Gaofeng,SONG Xiaojun,ZENG Weihu. Interface Reaction Mechanism Between SiO₂ and Matrix and Its Effect on the Deformation Behavior of Inclusionsin Powder Metallurgy Superalloy[J]. 金属学报, 2019, 55(11): 1437-1447.
[14]	MA Guonan, WANG Dong, LIU Zhenyu, BI Sheng, ZAN Yuning, XIAO Bolv, MA Zongyi. Effect of Hot Pressing Temperature on Microstructure and Tensile Properties of SiC/Al-Zn-Mg-Cu Composites[J]. 金属学报, 2019, 55(10): 1319-1328.
[15]	Lei XU, Ruipeng GUO, Jie WU, Zhengguan LU, Rui YANG. Progress in Hot Isostatic Pressing Technology ofTitanium Alloy Powder[J]. 金属学报, 2018, 54(11): 1537-1552.

No Suggested Reading articles found!

Viewed

Full text

Abstract

Cited

Shared

Discussed