Atomic Simulation of Tensile Behavior of γ/γ Interface System in Lamellar TiAl-Nb Alloy
ZHANG Jun1,2, FENG Ruicheng1,2,*, YAO Yongjun1,2, YANG Shengze1,2, CAO Hui1,2, FU Rong1,2, LI Haiyan1,2
1 School of Mechanical and Electronical Engineering, Lanzhou University of Technology, Lanzhou 730050, China 2 Key Laboratory of Digital Manufacturing Technology and Application, the Ministry of Education, Lanzhou University of Technology, Lanzhou 730050, China
Abstract: During the plastic deformation of TiAl based alloy with fully lamellar structure, the strain energy required by dislocation movement will be increased due to the existence of multiple interfaces which can hinder dislocation migration. Therefore, the deformation ability and strength are strongly dependent on the lamellar interface in the microstructure. In this work, the deformation behavior of TiAl-Nb alloy with γ/γ interface under uniaxial tensile loading has been studied by the molecular dynamics method. The mechanical response, dislocation evolution and fracture mechanism of lamellar TiAl-Nb alloy under TT (true-twin), RB (rotational boundary) and PT (pseudo-twin) have been discussed on the atomic scale. The relationship between mechanical response and microstructure evolution of TiAl-Nb alloys was described. It is shown that the mechanical pro-perties of TiAl-Nb alloys with different interfaces have a significant layered boundary effect. By observing the interaction between the dislocation and the interface, it is found that after the encounter of the dislocation and the interface, disordered atomic regions can be generated in and around the three interfaces. However, the disordered atomic region in RB/PT sample, as the source of dislocation, will emit the dislocation to another layer, while the disordered atomic region in TT sample will not act as the source of dislocation to another layer.
张隽, 冯瑞成, 姚永军, 杨晟泽, 曹卉, 付蓉, 李海燕. 片层状TiAl-Nb合金中γ/γ界面体系拉伸行为的原子模拟[J]. 材料导报, 2023, 37(6): 21080280-6.
ZHANG Jun, FENG Ruicheng, YAO Yongjun, YANG Shengze, CAO Hui, FU Rong, LI Haiyan. Atomic Simulation of Tensile Behavior of γ/γ Interface System in Lamellar TiAl-Nb Alloy. Materials Reports, 2023, 37(6): 21080280-6.
1 Imayev V, Oleneva T, Imayev R, et al. Intermetallics, 2012, 26, 91. 2 Gerling R, Schimansky F P, Stark A, et al. Intermetallics, 2008, 16(5), 689. 3 Nochovnaya N A, Panin P V, Kochetkov A S, et al. Metal Science and Heat Treatment, 2014, 56(7), 364. 4 Mayer S, Erdely P, Fischer F D, et al. Advanced Engineering Materials, 2017, 19(4), 160735. 5 Zhu H, Wei T, Carr D, et al. JOM, 2012, 64(12), 1418. 6 Bewlay B P, Nag S, Suzuki A, et al. Materials at High Temperatures, 2016, 33(4), 549. 7 Appel F, Paul J D H, Oehring M. Gamma titanium aluminide alloys: science and technology, Wiley Online Library, Germany, 2011, pp. 301. 8 Kim Y W, Dimiduk D M. JOM, 1991, 43(8), 40. 9 Liu Y J, Jiang X Q, She X W, et al. Materials Reports, 2020, 34(10), 10132 (in Chinese). 刘玉洁, 蒋显全, 佘欣未, 等. 材料导报, 2020, 34(10), 10132. 10 Elkhateeb M G, Shin Y C. Materials & Design, 2018, 155, 161. 11 Cao X P, Zhang S L, Zhang C J, et al. Rare Metal Materials and Engineering, 2020, 49(7), 2346 (in Chinese). 曹小平, 张树玲, 张长江, 等. 稀有金属材料与工程, 2020, 49(7), 2346. 12 Gao Z T, Hu R, Wu Y L, et al. Rare Metal Materials and Engineering, 2019, 48(9), 3071 (in Chinese). 高子彤, 胡锐, 吴与伦, 等. 稀有金属材料与工程, 2019, 48(9), 3071. 13 Clemens H, Mayer S. Advanced Engineering Materials, 2013, 15(4), 191. 14 Chan K S, Kim Y W. Acta Metallurgica et Materialia, 1995, 43(2), 439. 15 Burtscher M, Klein T, Mayer S, et al. Intermetallics, 2019, 114, 106611. 16 Mine Y, Takashima K, Bowen P. Materials Science & Engineering: A, 2012, 532, 13. 17 Li J H, Zhang C, Feng R C, et al. Rare Metal Materials and Engineering, 2021, 50(5), 1617. 18 Schnabel J E, Scheider I. Frontiers in Materials, 2020, 7, 347. 19 Kanani M, Hartmaier A, Janisch R. Acta Materialia, 2016, 106, 208. 20 Ganesan H, Scheider I, Cyron C J. Frontiers in Materials, 2021, 7, 382. 21 Li W, Yin Y, Xu Q, et al. Computational Materials Science, 2019, 159, 397. 22 Li W, Yu W, Xu Q, et al. Computational Materials Science, 2020, 172, 109361. 23 Chauniyal A, Janisch R. Materials Science and Engineering: A, 2020, 796, 140053. 24 Dimiduk D M. Materials Science and Engineering: A, 1999, 263(2), 281. 25 Dey S R, Bouzy E, Hazotte A. Acta Materialia, 2008, 56(9), 2051. 26 Kesler M S, Goyel S, Ebrahimi F, et al. Journal of Alloys and Compounds, 2017, 695, 2672. 27 Bibhanshu N, Bhattacharjee A, Suwas S. Journal of Alloys and Compounds, 2020, 832, 154584. 28 Hayes R W, London B. Acta Metallurgica et Materialia, 1992, 40(9), 2167. 29 Xu X J, Xu L H, Lin J P, et al. Intermetallics, 2005, 13(3-4), 337. 30 Yan Y Q, Zhou L, Wang W S, et al. Journal of Alloys and Compounds, 2003, 361(1-2), 241. 31 Kou P P, Feng R C, Li H Y, et al. Materials Reports B:Research Papers, 2020, 34(7), 14140 (in Chinese). 寇佩佩, 冯瑞成, 李海燕, 等. 材料导报:研究篇, 2020, 34(7), 14140. 32 Li Y F, Xu H, Song Z, et al. Journal of Central South University of Technology, 2010, 17(4), 674. 33 Tian S, Lv X, Yu H, et al. Materials Science and Engineering: A, 2016, 651, 490. 34 Lin L, Li B S, Zhu G M, et al. International Journal of Minerals Metallurgy and Materials, 2018, 25(10), 1181. 35 Tan J, Sinno T R, Diamond S L. Journal of Computational Science, 2018, 25, 89. 36 Farkas D, Jones C. Modelling and Simulation in Materials Science and Engineering, 1996, 4(1), 23. 37 Stukowski A. Modelling and Simulation in Materials Science and Engineering, 2009, 18(1), 015012. 38 Sutton A P, Balluffi R W. 叶飞, 顾新福, 邱东, 等, 译. 晶体材料中的界面, 高等教育出版社, 2016, pp. 761. 39 Qu S, Zhou H, Huang Z. Scripta Materialia, 2011, 65(8), 715. 40 Hull D, Bacon D J. Introduction to dislocations (5th Edition), Elsevier, Netherlands, 2011, pp. 48.
渝公网安备50019002502923号 版权所有：《材料导报》编辑部
2023, Vol. 37 
