Grain Refining Efficiency of SHS Al-Ti-B-C Master Alloy for Pure Aluminum and Its Effect on Mechanical Properties

doi:10.1007/s40195-016-0452-8

Abstract

Abstract:

A new Al-5Ti-0.75B-0.2C master alloy was successfully prepared by self-propagating high-temperature (SHS) reaction from an Al-Ti-B₄C system with molten Al. Microstructure and phase characterization of the prepared Al-5Ti-0.75B-0.2C master alloy show that the nearly spherical TiC particles, hexagonal or rectangular TiB₂ particles, and block-like TiAl3 particles distribute uniformly in the aluminum matrix. Grain refining test on commercial pure aluminum indicates that Al-5Ti-0.75B-0.2C master alloy exhibits a better grain refining performance than Al-5Ti-1B master alloy. By addition of 0.2 wt% Al-5Ti-0.75B-0.2C master alloy, the average grain size of α-Al can be effectively refined to 160 ± 5 μm from about 3000 μm, and the tensile strength and elongation are increased by about 20% and 14.1% due to the grain refinement.

Key words: Aluminum, Al-Ti-B-C master alloy, Self-propagating high-temperature (SHS), Grain refinement, Mechanical properties

Xu-Guang An,Ying Liu,Jin-Wen Ye,Lin-Zhi Wang,Peng-Yue Wang. Grain Refining Efficiency of SHS Al-Ti-B-C Master Alloy for Pure Aluminum and Its Effect on Mechanical Properties[J]. Acta Metallurgica Sinica (English Letters), 2016, 29(8): 742-747.

Figures/Tables 5

Fig. 1 XRD pattern of Al-5Ti-0.75B-0.2C master alloy

Fig. 2 Microstructures of Al-5Ti-0.75B-0.2C a, c, Al-5Ti-1B b, d master alloys

Fig. 3 EDS results of the prepared Al-5Ti-0.75B-0.2C master alloy

Fig. 4 Macrographs of pure Al under different refiners: a pure Al, b 0.2 wt% Al-5Ti-1B, c 0.2 wt% Al-5Ti-0.75B-0.2C

[1]	L. B. Tong, J. H. Chu, D. N. Zou, Q. Sun, S. Kamado, H. G. Brokmeier, M. Y. Zheng. Simultaneously Enhanced Mechanical Properties and Damping Capacities of ZK60 Mg Alloys Processed by Multi-Directional Forging [J]. Acta Metallurgica Sinica (English Letters), 2021, 34(2): 265-277.
[2]	Chun-Hua Ma, Fu-Sheng Pan, Ding-Fei Zhang, Ai-Tao Tang, Zhi-Wen Lu. Effects of Sb Addition on Microstructural Evolution and Mechanical Properties of Mg-9Al-5Sn Alloy [J]. Acta Metallurgica Sinica (English Letters), 2021, 34(2): 278-288.
[3]	Lin-Yue Jia, Wen-Bo Du, Jin-Long Fu, Zhao-Hui Wang, Ke Liu, Shu-Bo Li, Xian Du. Obtaining Ultra-High Strength and Ductility in a Mg-Gd-Er-Zn-Zr Alloy via Extrusion, Pre-deformation and Two-Stage Aging [J]. Acta Metallurgica Sinica (English Letters), 2021, 34(1): 39-44.
[4]	Xi Zhao, Fa-Fa Yan, Zhi-Min Zhang, Peng-Cheng Gao, Shu-Chang Li. Influence of Heat Treatment on Precipitation Behavior and Mechanical Properties of Extruded AZ80 Magnesium Alloy [J]. Acta Metallurgica Sinica (English Letters), 2021, 34(1): 54-64.
[5]	Quan Wen, Wenya Li, Vivek Patel, Luciano Bergmann, Benjamin Klusemann, Jorge F. dos Santos. Assessing the Bonding Interface Characteristics and Mechanical Properties of Bobbin Tool Friction Stir Welded Dissimilar Aluminum Alloy Joints [J]. Acta Metallurgica Sinica (English Letters), 2021, 34(1): 125-134.
[6]	Hua-Ping Tang, Qu-Dong Wang, Colin Luo, Chuan Lei, Tian-Wen Liu, Zhong-Yang Li, Kui Wang, Hai-Yan Jiang, Wen-Jiang Ding. Effects of Solution Treatment on the Microstructure, Tensile Properties, and Impact Toughness of an Al-5.0Mg-3.0Zn-1.0Cu Cast Alloy [J]. Acta Metallurgica Sinica (English Letters), 2021, 34(1): 98-110.
[7]	Fenghua Wang, Peng Su, Linxin Qin, Shuai Dong, Yunliang Li, Jie Dong. Microstructure and Mechanical Properties of Mg-3Al-Zn Magnesium Alloy Sheet by Hot Shear Spinning [J]. Acta Metallurgica Sinica (English Letters), 2020, 33(9): 1226-1234.
[8]	Chao-Yue Zhao, Xian-Hua Chen, Peng Peng, Teng Tu, Andrej Atrens, Fu-Sheng Pan. Microstructures and Mechanical Properties of Mg-xAl-1Sn-0.3Mn (x = 1, 3, 5) Alloy Sheets [J]. Acta Metallurgica Sinica (English Letters), 2020, 33(9): 1217-1225.
[9]	Tianbo Zhao, Yutaka S. Sato, Hiroyuki Kokawa, Kazuhiro Ito. Predicting Tensile Properties of Friction-Stir-Welded 6063 Aluminum with Experimentally Measured Welding Heat Input [J]. Acta Metallurgica Sinica (English Letters), 2020, 33(9): 1235-1242.
[10]	Qiuxin Nie, Hui Liang, Dongxu Qiao, Zhaoxin Qi, Zhiqiang Cao. Microstructures and Mechanical Properties of Multi-component Al_xCrFe₂Ni₂Mo_0.2 High-Entropy Alloys [J]. Acta Metallurgica Sinica (English Letters), 2020, 33(8): 1135-1144.
[11]	Ren Li, Jing Ren, Guo-Jia Zhang, Jun-Yang He, Yi-Ping Lu, Tong-Min Wang, Ting-Ju Li. Novel (CoFe₂NiV_0.5Mo_0.2)_100-_xNb_x Eutectic High-Entropy Alloys with Excellent Combination of Mechanical and Corrosion Properties [J]. Acta Metallurgica Sinica (English Letters), 2020, 33(8): 1046-1056.
[12]	Jia-Qi Zhao, Hua Tian, Zhong Wang, Xue-Jiao Wang, Jun-Wei Qiao. FCC-to-HCP Phase Transformation in CoCrNi_x Medium-Entropy Alloys [J]. Acta Metallurgica Sinica (English Letters), 2020, 33(8): 1151-1158.
[13]	Hao Wu, Si-Rui Huang, Cheng-Yan Zhu, Ji-Feng Zhang, He-Guo Zhu, Zong-Han Xie. In Situ TiC/FeCrNiCu High-Entropy Alloy Matrix Composites: Reaction Mechanism, Microstructure and Mechanical Properties [J]. Acta Metallurgica Sinica (English Letters), 2020, 33(8): 1091-1102.
[14]	Kai-Bo Nie, Zhi-Hao Zhu, Paul Munroe, Kun-Kun Deng, Jun-Gang Han. Microstructure, Tensile Properties and Work Hardening Behavior of an Extruded Mg-Zn-Ca-Mn Magnesium Alloy [J]. Acta Metallurgica Sinica (English Letters), 2020, 33(7): 922-936.
[15]	Yu-Ning Zan, Yang-Tao Zhou, Xiao-Nan Li, Guo-Nan Ma, Zhen-Yu Liu, Quan-Zhao Wang, Dong Wang, Bo-Lv Xiao, Zong-Yi Ma. Enhancing High-Temperature Strength and Thermal Stability of Al₂O₃/Al Composites by High-Temperature Pre-treatment of Ultrafine Al Powders [J]. Acta Metallurgica Sinica (English Letters), 2020, 33(7): 913-921.