Acta Metall Sin  1998, Vol. 34 Issue (1): 100-106    DOI:

Current Issue | Archive | Adv Search |

ANALYSIS OF THE FORMATION MECHANISM OF TiB_2 PARTICULATE FABRICATED BY IN SITU REACTION IN MOLTEN ALUMINIUM

YANG Bin; WANG Yuqing;ZHOU Benlian (Institute of Metal Research; The Chinese Academy of Sciences;Shenyang 110015)(Department of Mechanical and Electronic Engineering; Nanchang University; Nanchang 33002)(International Center for Materials Physics; The Chinese Academy of Sciences; Shenyang 110015)

YANG Bin; WANG Yuqing;ZHOU Benlian (Institute of Metal Research; The Chinese Academy of Sciences;Shenyang 110015)(Department of Mechanical and Electronic Engineering; Nanchang University; Nanchang 33002)(International Center for Materials Physics; The Chinese Academy of Sciences; Shenyang 110015). ANALYSIS OF THE FORMATION MECHANISM OF TiB_2 PARTICULATE FABRICATED BY IN SITU REACTION IN MOLTEN ALUMINIUM. Acta Metall Sin, 1998, 34(1): 100-106.

Abstract References Related Articles Recommended Metrics Download:  PDF(1907KB)  Export:  BibTeX | EndNote (RIS)       Abstract  By making use of a technique in which TiB2 particulates are formed by an in situ reaction in molten aluminium, TiB2/Al composites have been fabricated. The formation mechanism of TiB2 particulate was studied with XRD and SEM. The results show that (1) the heat generated by the reaction 3Al1+Tis→Al3Ti is one of reasons for igniting the reactions Al3Ti+2B→ 3Al+TiB2 and Ti+2B →TiB2, (2) diffusion, solution-precipitation mechanisms occur during this process and (3) both theoretical and experimental results have shown that the effect of aluminium content in the preform on the formation mechanism of TiB2 particulate is much obvious. When the mole fraction of aluminium in the preform exceeds 43.5%, TiB2 particulates are formed by a diffusion mechanism, and the morphology of the particulates is approximately spherical. A part of TiB2 particulates is formed by a solution-precipitation mechanism when the mole fraction of aluminium is lower than 43.5%, and the TiB2 particulates have grown up to square and multilateral shape. A number of square and multilateral TiB2 particulates with growing steps have been clearly observed with SEM. Key words:  TiB_2/Al composite      in situ reaction      TiB_2 particulate      formation mechanism      Received:  18 January 1998      Service E-mail this article Add to citation manager E-mail Alert RSS （） Articles by authors URL:  https://www.ams.org.cn/EN/     OR     https://www.ams.org.cn/EN/Y1998/V34/I1/100 1 Premkumar M K,Chu N G、Metall Trans,1993;24A:2359 2 Chu M G.Premkumar M K Metall Trans,1993; 24A:2803 3 王自东、李庆春.李春玉,张录山,于桂复.金属学报,1994;30:B39(Wang Zidong,Li Qingchun, Li Chunyu, Zhang Lushan, Yu Guifu.Acta Metall Sin 1994;30: B39) 4 梁英教,车荫昌.无机物热力学数据手册沈阳:东北大学出版社,1994:383(Liang Yingjiao,Che Yinchang.Inorganic Substances Thermodynamic Data Handbook.Shenyang:Northeastern University Press,1994:383) 5 Barin I,Knache O.Thermochemical Properties of Inorganic Substances.New york:Springer-verlag Berlin Heidelberg, 1973:792 6 Atoda T,Higashi I,Kobavashi M.Sci Pap Inst Phys Chem Res, 1967;61:92 7 Dunand D C Materials and Manufacturing Processes. 1995;10:373 8 傅正义.袁润章. Munir Z A.硅酸盐学报,1993 6: 541(Fu Zhengyi, Yuan Runzhang, Munir Z A.J Chin Ceram Soc,1993; 6:541) 9 Ross R B.Metallic Materials Specification Handbook London: E & F.N.Spon LTD,1972:3 [1] ZHANG Leilei, CHEN Jingyang, TANG Xin, XIAO Chengbo, ZHANG Mingjun, YANG Qing. Evolution of Microstructures and Mechanical Properties of K439B Superalloy During Long-Term Aging at 800oC[J]. 金属学报, 2023, 59(9): 1253-1264. [2] BI Zhongnan, QIN Hailong, LIU Pei, SHI Songyi, XIE Jinli, ZHANG Ji. Research Progress Regarding Quantitative Characterization and Control Technology of Residual Stress in Superalloy Forgings[J]. 金属学报, 2023, 59(9): 1144-1158. [3] DING Hua, ZHANG Yu, CAI Minghui, TANG Zhengyou. Research Progress and Prospects of Austenite-Based Fe-Mn-Al-C Lightweight Steels[J]. 金属学报, 2023, 59(8): 1027-1041. [4] ZHANG Haifeng, YAN Haile, FANG Feng, JIA Nan. Molecular Dynamic Simulations of Deformation Mechanisms for FeMnCoCrNi High-Entropy Alloy Bicrystal Micropillars[J]. 金属学报, 2023, 59(8): 1051-1064. [5] LIU Junpeng, CHEN Hao, ZHANG Chi, YANG Zhigang, ZHANG Yong, DAI Lanhong. Progress of Cryogenic Deformation and Strengthening-Toughening Mechanisms of High-Entropy Alloys[J]. 金属学报, 2023, 59(6): 727-743. [6] ZHANG Jinyu, QU Qimeng, WANG Yaqiang, WU Kai, LIU Gang, SUN Jun. Research Progress on Irradiation Effects and Mechanical Properties of Metal/High-Entropy Alloy Nanostructured Multilayers[J]. 金属学报, 2022, 58(11): 1371-1384. [7] LUO Xuan, HAN Fang, HUANG Tianlin, WU Guilin, HUANG Xiaoxu. Microstructure and Mechanical Properties of Layered Heterostructured Mg-3Gd Alloy[J]. 金属学报, 2022, 58(11): 1489-1496. [8] CAO Furong, DING Xin, XIANG Chao, SHANG Huihui. Flow Stress, Microstructural Evolution, and Constitutive Analysis During High-Temperature Deformation in Mg-4.4Li-2.5Zn-0.46Al-0.74Y Alloy[J]. 金属学报, 2021, 57(7): 860-870. [9] YU Qian, CHEN Yujie, FANG Yan. Heterogeneity in Chemical Distribution and Its Impact in High-Entropy Alloys[J]. 金属学报, 2021, 57(4): 393-402. [10] LI Jinshan, TANG Bin, FAN Jiangkun, WANG Chuanyun, HUA Ke, ZHANG Mengqi, DAI Jinhua, KOU Hongchao. Deformation Mechanism and Microstructure Control of High Strength Metastable β Titanium Alloy[J]. 金属学报, 2021, 57(11): 1438-1454. [11] ZHANG Yang, SHAO Jianbo, CHEN Tao, LIU Chuming, CHEN Zhiyong. Deformation Mechanism and Dynamic Recrystallization of Mg-5.6Gd-0.8Zn Alloy During Multi-Directional Forging[J]. 金属学报, 2020, 56(5): 723-735. [12] Hulin DONG,Haiping BAO,Jianhong PENG. Effect of TiC Contents on Mechanical Properties and Wear Resistance of Iron-Based Composites[J]. 金属学报, 2019, 55(8): 1049-1057. [13] Bolü XIAO, Zhiye HUANG, Kai MA, Xingxing ZHANG, Zongyi MA. Research on Hot Deformation Behaviors of Discontinuously Reinforced Aluminum Composites[J]. 金属学报, 2019, 55(1): 59-72. [14] Jianqiang REN, Shuhua LIANG, Yihui JIANG, Xiang DU. Research on the Microstructure and Properties of In Situ (TiB2-TiB)/Cu Composites[J]. 金属学报, 2019, 55(1): 126-132. [15] Xiangru GUO, Chaoyang SUN, Chunhui WANG, Lingyun QIAN, Fengxian LIU. Investigation of Strain Rate Effect by Three-Dimensional Discrete Dislocation Dynamics for fcc Single Crystal During Compression Process[J]. 金属学报, 2018, 54(9): 1322-1332. No Suggested Reading articles found! Viewed Full text Abstract Cited   Shared      Discussed