李培友

• 1:陕西理工大学材料科学与工程学院

摘要(Abstract)：

采用X射线衍射仪、光学显微镜、扫描电镜、万能试验机和显微硬度计等研究了热处理温度对Ti_(80)Fe_(20)合金显微组织和力学性能的影响。结果表明:当热处理温度为773 K和823 K时,合金的相组成为β-Ti和α-Ti相;而在873 K时,其相组成为基体β-Ti相、α-Ti和第二相Ti Fe相;当热处理温度为773、823和873 K时,合金的平均晶粒尺寸分别为292. 4、33. 78和22. 7μm,说明合金平均晶粒尺寸随热处理温度增加而减小,合金晶粒得到细化;当热处理温度为873 K时,合金具有较高屈服强度、抗压强度、塑性应变以及压缩韧度,还具有低的杨氏模量和较高的弹性能,其优异力学性能能够满足工程材料以及生物医用合金的使用需求,合金的断裂机制为解理断裂为主延性断裂为辅的断裂机制。

关键词(KeyWords)： Ti-Fe合金;显微组织;热处理温度;力学性能;断裂机制

Abstract:

Keywords:

基金项目(Foundation): 陕西理工大学博士科研启动基金(SLGKYQD2-22)

作者(Author): 李培友

DOI: 10.13289/j.issn.1009-6264.2019-0183

参考文献(References)：

• [1] Attar H,Haghighi S E,Kent D,et al.Comparative study of commercially pure titanium produced by laser engineered net shaping,selective laser melting and casting processes[J].Materials Science and Engineering A,2017,705:385-393.
• [2] Niinomi M.Recent research and development in titanium alloys for biomedical applications and healthcare goods[J]. Science Technology Advance Materials,2003,4:445-454.
• [3] Li P Y.Microstructure and mechanical properties of novelβ-type Ti-Co-Zr alloys with high specific strength[J].Materials Research Express,2019,6:076559.
• [4]徐伟，路新，杜艳霞，等．粉末冶金制备Ti-Fe二元合金的耐腐蚀性能[J]．金属学报，2018,54(1):38-46.XU Wei,LU Xin,DU Yan-xia,et al. Corrosion resistance of Ti-Fe binary alloys fabricated by powder metallurgy[J]. Acta Metallurgica Sinica,2018,54(1):38-46.
• [5]孟庆宇，路新，徐伟，等．粉末冶金Ti-Fe合金的显微组织及力学性能[J]．材料热处理学报，2016,37(8):36-40.MENG Qing-yu,LU Xin,XU Wei,et al. Microstructure and mechanical properties of powder metallurgy Ti-Fe alloys[J].Transactions of Materials and Heat Treatment,2016,37(8):36-40.
• [6] Li P Y. Microstructural and mechanical properties of novelβ-type Ti-Nb-Ni alloys containing s second phase[J]. International Journal of Materials Research,2018,109:708-715.
• [7] Louzguine D V,Kato H,Inoue A.High strength and ductile binary Ti-Fe composite alloy[J].Journal of Alloys and Compounds,2004,384:1-3.
• [8] Louzguine D V,Kato H,Inoue A.High-strength hypereutectic Ti-Fe-Co bulk alloy with good ductility[J].Philosophical Magazine,2004,84:359-364.
• [9] Zadorozhnyy V Y,Inoue A,Louzguine D V. Ti-based nanostructured low-alloy with high strength and ductility[J]. Materials Science and Engineering A,2012,551:82-86.
• [10] Wang C S,Dong C.Design and laser cladding of Ti-Fe-Zr alloy coatings[J].Materials Today Communication,2015,3:43-51.
• [11] Pettan G C,Afonso C R,Spinelli J E.Microstructure development and mechanical properties of rapidly solidified Ti-Fe and Ti-FeBi alloys[J].Materials and Design,2015,86:221-229.
• [12] Das J,Kim K B,Baier F.High-strength Ti-base ultrafine eutectic with enhanced ductility[J].Applied Physics Letters,2005,87:161907.
• [13] Das J,Eckert J,Theissmann R. Structural short-range order theβ-Ti phase in bulk Ti-Fe-(Sn)nanoeutectic composites[J].Applied Physics Letters,2006,89:261917.
• [14] Das J,Kim K B,Xu W,et al. Formation of ductile untrafine eutectic structure in Ti-Fe-Sn alloy[J]. Materials Science and Engineering A,2007,449-451:737-740.
• [15] Han J H,Park D H,Bang C W,et al.Sn effect on microstructure and mechanical properties of ultrafine eutectic Ti-Fe-Sn alloys[J].Journal of Alloys and Compounds,2009,483:44-46.
• [16] Han J H,Kim K B,Yi S,et al.Formation of a bimodal eutectic structure in Ti-Fe-Sn alloys with enhanced plasticity[J].Applied Physics Letters,2008,93:141901.
• [17] Cao G H,Schneider R,Gerthsen D,et al.Sn and Nb modified ultrafine bulk alloys with high-strength and enhanced ductility[J].Applied Physics Letters,2013,102:061908.
• [18] Cao G H,Ketov S V,Jiang J,et al.New beta-type Ti-Fe-Sn-Nb alloys with superior mechanical strength[J].Materials Science and Engineering A,2017,705:348-351.
• [19] Li P Y,Zhang H,Tong T,He Z R.The rapidly solidifiedβ-type Ti-Fe-Sn alloys with high specific strength and low elastic modulus[J].Journal of Alloys and Compounds,2019,786:986-994.
• [20] Yang H,Wen J,Quan M,et al.Evaluation of the volume fraction of nanocrystals devitrified in Al-based amorphous alloys[J].Journal of Non-Crystalline Solids,2009,355:235-238.
• [21] Li P Y.Microstructure and mechanical properties of rapidly solidified B2-type Zr-Co alloys containing a second phase of Zr2Co[J].Materials Research Express,2018,5:046522.
• [22] Gornakova A S,Straumal B B,Nekrasov A N,et al.Grain boundary wetting by a second solid phase in Ti-Fe alloys[J].Journal of Materials Engineering and Performance,2018,27:4989-4992.
• [23] Gornakova A S,Prokofiev S I,Straumal B B,et al.Growth of(αTi)grain-boundary layers in Ti-Co alloys[J].Russian Journal of Non-Ferrous Metals,2016,57:703-709.
• [24] Fischer F D,Reisner G,Werner E,et al. A new view on transformation induced plasticity(TRIP)[J]. International Journal of Plasticity,2000,16:723-748.

文章评论(Comment)：