原位自生(Y<sub>2</sub>O<sub>3</sub>+TiB)/Ti-6Al-4V复合材料的组织与力学性能

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摘要以Ti粉和Al-40V合金粉末为原料,添加微量稀土化合物YB₄,采用常压烧结工艺,利用YB₄的高温热分解反应原位自生(Y₂O₃+TiB)/Ti-6Al-4V复合材料,研究YB₄添加量对材料组织与力学性能的影响。利用X射线衍射仪(XRD)、扫描电镜(SEM)、电子探针显微分析(EPMA)等手段分析复合材料的显微组织、物相组成和增强体的微观形貌,用电子拉伸机测试材料的力学性能。结果表明,YB₄在Ti-6Al-4V合金中发生原位反应,生成Y₂O₃颗粒和TiB晶须。随YB₄添加量增加,Y₂O₃颗粒逐渐聚集成团,TiB晶须长大。添加微量YB₄可略微提高合金的抗拉强度,并显著提高伸长率。YB₄添加量(质量分数)为0.263%时,原位自生((Y₂O₃+TiB)/Ti-6Al-4V)复合材料获得高抗拉强度和高伸长率,分别为924.80 MPa和9.13%。

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关键词 ：原位自生, 钛基复合材料, 稀土元素, YB₄, 微观组织, 力学性能

Abstract：The rare earth compound YB₄ was added into Ti-6Al-4V alloy fabricated using Ti and Al-40V alloy powders as raw materials to prepare in-situ (Y₂O₃+TiB)/Ti-6Al-4V composites by the high temperature thermal decomposition reaction of YB₄ with titanium matrix. The effects of the amount of YB₄addition on the microstructure and mechanical properties of the composite were studied. The microstructures and phase compositions of the composites were analyzed by X-ray diffractometer (XRD), SEM and EPMA. The mechanical properties of materials were tested by electronic stretcher. The results show that the YB₄ reacts with titanium matrix and in-situ generate Y₂O₃ particles and TiB whiskers. With increasing YB₄ additive amount, Y₂O₃ particles gradually agglomerate and TiB whiskers grow. The minor content of YB₄ in (Y₂O₃+TiB)/Ti-6Al-4V composites can slightly increase the tensile strength and significantly improve the elongation. In-situ synthesized (TiB+Y₂O₃)/Ti-6Al-4V composites achieved both high tensile strength (924.0 MPa) and high tensile ductility (9.13%) with adding mass fraction of 0.263% YB₄ powder.

Key words： in-situ synthesis titanium matrix composites rare earth elements YB₄ microstructure mechanical properties

收稿日期: 2018-04-12 出版日期: 2019-07-19

ZTFLH:

TF125

通讯作者: 刘会群,副教授,博士。电话：0731-88830263;E-mail: liuhuiqun@csu.edu.cn

引用本文:

胡均, 刘会群, 王斌, 易丹青, 田宇, 王南海. 原位自生(Y₂O₃+TiB)/Ti-6Al-4V复合材料的组织与力学性能[J]. 粉末冶金材料科学与工程, 2018, 23(6): 632-639.
HU Jun, LIU Huiqun, WANG Bin, YI Danqing, TIAN Yu, WANG Nanhai. Microstructure and mechanical properties of in-situ (Y₂O₃+TiB)/Ti-6Al-4V composites. Materials Science and Engineering of Powder Metallurgy, 2018, 23(6): 632-639.

链接本文:

http://pmbjb.csu.edu.cn/CN/ 或 http://pmbjb.csu.edu.cn/CN/Y2018/V23/I6/632

[1] 莱茵斯C, 皮特尔斯 M编. 钛与钛合金[M]. 北京: 化学工业出版社, 2005.
LEYENS C, PETERS M.Titanium and Titanium Alloys[M]. Beijing: Chemical Industry Press, 2005.
[2] VEIGA C, DAVIM J P, LOUREIRO A J R. Properties and applications of titanium alloys: a brief review[J]. Rev Adv Mater Sci, 2012, 32(2): 133-148.
[3] PETERES M, KUMPFERT J, WARD C H, et al.Titanium alloys for aerospace applications[J]. Advanced Engineering Materials, 2010, 5(6): 419-427.
[4] ABKOWITZ S, ABKOWITZ S M, FISHER H, et al.CermeTi® discontinuously reinforced Ti-matrix composites: manufacturing, properties, and applications[J]. JOM, 2004, 56(5): 37-41.
[5] VADAYAR K S, RANI S D, PRASAD V V B. Microstructural and mechanical characteristics of in-situ titanium metal matrix composites[J]. International Journal on Theoretical & Applied Research in Mechanical Engineering, 2013, 2(4): 12-16.
[6] 罗国珍. 钛基复合材料的研究与发展[J]. 稀有金属材料与工程, 1997, 26(2): 1-7.
LUO Guozhen.Research and development of titanium matrix composites[J]. Rare Metal Materials and Engineering, 1997, 26(2): 1-7.
[7] GORSSE S, MIRACLE D B.Mechanical properties of Ti- 6Al-4V/TiB composites with randomly oriented and aligned TiB reinforcements[J]. Acta Materialia, 2003, 51(9): 2427-2442.
[8] ZHOU P, QIN J N, LU W J, et al.Microstructure and mechanical properties of in situ synthesised (TiC+TiB)/Ti-6Al-4V composites prepared by powder metallurgy[J]. Materials Science & Technology, 2011, 27(12): 1788-1792.
[9] WANG S, LUO L M, ZHAO M L, et al.Microstructure and properties of TiN-reinforced W-Ti alloys prepared by spark plasma sintering[J]. Powder Technology, 2016, 294: 301-306.
[10] 胡加瑞, 肖来荣, 龙毅, 等. 锻造对TiC颗粒增强钛基复合材料组织和性能的影响[J]. 粉末冶金材料科学与工程, 2012, 17(6): 735-741.
HU J R, XIAO L R, LONG Y, et al.Effect of forging on the microstructure and properties of TiC particle reinforced titanium matrix composites[J]. Powder Metallurgy Materials Science and Engineering, 2012, 17(6): 735-741.
[11] LI J, WANG L, QIN J, et al.Effect of TRIPLEX heat treatment on tensile properties of in situ synthesized (TiB+La₂O₃)/Ti composite[J]. Materials Science & Engineering A, 2010, 527(21): 5811-5817.
[12] MADTHA S, LEE C, CHANDRAN K S R. Physical and mechanical properties of nanostructured titanium boride (TiB) ceramic[J]. Powder Metallurgy Technology, 2007, 91(4): 1319-1321.
[13] 徐栋. 原位合成多元增强钛复合材料(TiB+TiC+Y₂O₃)/Ti的微结构研究[D]. 上海: 上海交通大学, 2006.
XU Dong.Microstructure of in-situ synthesized multiple reinforced titanium composites (TiB+TiC+Y₂O₃)/Ti[D]. Shanghai: Shanghai Jiaotong University, 2006.
[14] HUANG L, QIAN M, LIU Z, et al.In situ preparation of TiB nanowires for high-performance Ti metal matrix nanocomposites[J]. Journal of Alloys & Compounds, 2018, 735: 2640-2645.
[15] LIU Y, LIU Y B, WANG B, et al.Rare earth element: is it a necessity for PM Ti alloys[J]. Key Engineering Materials, 2012, 520: 41-48.
[16] 吕维洁, 徐栋, 覃继宁, 等. 原位合成多元增强钛基复合材料(TiB+TiC+Y₂O₃)/Ti[J]. 中国有色金属学报, 2005, 15(11): 1727-1732.
LÜ Weijie, XU Dong, QIN Jining, et al.In-situ synthesis of multiple reinforced titanium matrix composites (TiB+TiC+ Y₂O₃)/Ti[J]. Journal of the Chinese Society of Nonferrous Metals, 2005, 15(11): 1727-1732.
[17] YAN M, LIU Y, SCHAFFER G B, et al.In situ synchrotron radiation to understand the pathways for the scavenging of oxygen in commercially pure Ti and Ti-6Al-4V by yttrium hydride[J]. Scripta Materialia, 2013, 68(1): 63-66.
[18] QIU P, LI H, SUN X, et al.Reinforcements stimulated dynamic recrystallization behavior and tensile properties of extruded (TiB+TiC+La₂O₃)/Ti6Al4V composites[J]. Journal of Alloys & Compounds, 2017, 699: 874-881.
[19] YAN M, LIU Y, LIU Y B, et al.Simultaneous gettering of oxygen and chlorine and homogenization of the β phase by rare earth hydride additions to a powder metallurgy Ti-2.25Mo-1.5Fe alloy[J]. Scripta Materialia, 2012, 67(5): 491-494.
[20] 王斌, 刘咏, 刘延斌, 等. 稀土La对粉末冶金钛合金组织和力学性能的影响[J]. 粉末冶金材料科学与工程, 2011, 16(1): 136-142.
WANG Bin, LIU Yong, LIU Yanbin, et al.Effect of rare earth La on microstructure and mechanical properties of powder metallurgy titanium alloys[J]. Powder Metallurgy Materials Science & Engineering, 2011, 16(1): 136-142.
[21] MA Z Y, TIONG S C, GEN L.In-situ Ti-TiB metal-matrix composite prepared by a reactive pressing process[J]. Scripta Materialia, 2000, 42(4): 367-373.
[22] EYLON D, FROES F H.Titanium net-shape technologies[J]. JOM, 1984, 36(6): 36-41.
[23] CONRAD H.Effect of interstitial solutes on the strength and ductility of titanium[J]. Progress in Materials Science, 1981, 26(2): 123-403.
[24] FUJII H, FUJISAWA K, ISHII M, et al.Development of low-cost high-strength Ti-Fe-O-N alloy series[J]. Nippon Steel Technical Report, 2002, 85: 107-112.
[25] WILLIAMS J C, SOMMER A W, TUNG P P.The influence of oxygen concentration on the internal stress and dislocation arrangements in a titanium[J]. Metallurgical Transactions, 1973, 4(4): 1188-1190.
[26] YANG Y F, QIAN M.Fundamental understanding of the dissolution of oxide film on Ti powder and the unique scavenging feature by LaB₆[J]. Metallurgical & Materials Transactions A, 2018, 49(1): 1-6.
[27] ZAYKOSKI J A, OPEKA M M, SMITH L H, et al.Synthesis and characterization of YB₄ ceramics[J]. Journal of the American Ceramic Society, 2011, 94(11): 4059-4065.
[28] 陶春虎, 刘庆瑔, 曹春晓, 等. 航空用钛合金的失效及其预防[M]. 北京: 国防工业出版社, 2002: 4-6.
TAO Chunhu, LIU Qingquan, CAO Chunxiao, et al.Failure and Prevention of Aeronautical Titanium Alloy[M]. Beijing: National Defense Industry Press, 2002: 4-6.