Effect of TiB2 Content on Microstructure and Properties of In-situ TiB2/2219 Aluminum Matrix Composites

被引：0
|
作者：
Chen S. [1 ,2 ,3 ]
Wang D. [1 ,2 ]
Chen S. [1 ,2 ,3 ]
Chen K. [1 ,2 ,3 ]
机构：
[1] State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha
[2] Light Alloy Research Institute, Central South University, Changsha
[3] Collaborative Innovation Center of Advance Nonferrous Structural Materials and Manufacturing, Central South University, Changsha
来源：
Hunan Daxue Xuebao/Journal of Hunan University Natural Sciences | 2022年 / 49卷 / 12期
关键词：
aluminum matrix composites; mechanical property; microstructure; TiB[!sub]2[!/sub] content;
D O I：
10.16339/j.cnki.hdxbzkb.2022309
中图分类号：
学科分类号：
摘要：
The in-situ TiB2/2219 aluminum matrix composite ingots were prepared by using the high-temperature-mixed molten salt method. The effect of TiB2 content on microstructure and properties of in-situ TiB2/ 2219 aluminum matrix composites is investigated by optical microscopy, scanning electron microscopy, X-Ray diffraction, combined with elastic modulus, room temperature tensile and Charpy impact test methods. The results showed that the TiB2 mass fraction increased from 0 to 5%, and the TiB2 particle size and the average grain size of TiB2/2219 aluminum composite ingots decreased. The elastic modulus, tensile strength, and yield strength of TiB2/ 2219 aluminum matrix composite increased significantly as TiB2 content increased, but the ductility and impact toughness decreased. The elastic modulus, tensile strength, yield strength, and ductility of 5% TiB2/2219 aluminum matrix composites plate were 88.7 GPa, (474.2±2) MPa, (400.6±1) MPa and (4.7±0.1) %, respectively. © 2022 Hunan University. All rights reserved.
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页码：108 / 114
页数：6
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共 18 条
  • [1] LAKSHMI S, LU L, GUPTA M., In situ preparation of TiB<sub>2</sub> reinforced Al based composites, Journal of Materials Processing Technology, 73, pp. 160-166, (1998)
  • [2] LI X P, JI G, CHEN Z, Et al., Selective laser melting of nano-TiB<sub>2</sub> decorated AlSi<sub>10</sub>Mg alloy with high fracture strength and ductility, Acta Materialia, 129, pp. 183-193, (2017)
  • [3] XIONG Y F, WANG W H, SHI Y Y, Et al., Fatigue behavior of in situ TiB<sub>2</sub>/7050Al metal matrix composites: fracture mechanisms and fatigue life modeling after milling, International Journal of Fatigue, 138, (2020)
  • [4] GAN G S, YANG B, DU C H, Et al., Effect of TiB<sub>2</sub> particle on microstructure of 7075 Al alloy in rheological forming, Journal of Central South University (Science and Technology), 45, 12, pp. 4168-4174, (2014)
  • [5] CHEN Z N, WANG T M, ZHENG Y P, Et al., Development of TiB<sub>2</sub> reinforced aluminum foundry alloy based in situ composites: part I: an improved halide salt route to fabricate Al-5 wt%TiB<sub>2</sub> master composite, Materials Science and Engineering: A, 605, pp. 301-309, (2014)
  • [6] WANG T M, CHEN Z N, ZHENG Y P, Et al., Development of TiB<sub>2</sub> reinforced aluminum foundry alloy based in situ composites: part Ⅱ: enhancing the practical aluminum foundry alloys using the improved Al-5wt%TiB<sub>2</sub> master composite upon dilution, Materials Science and Engineering: A, 605, pp. 22-32, (2014)
  • [7] LIU K, NABAWY A M, CHEN X G., Influence of TiB<sub>2</sub> nanoparticles on elevated-temperature properties of Al-Mn-Mg 3004 alloy, Transactions of Nonferrous Metals Society of China, 27, 4, pp. 771-778, (2017)
  • [8] YI H Z, MA N H, ZHANG Y J, Et al., Effective elastic moduli of Al-Si composites reinforced in situ with TiB<sub>2</sub> particles, Scripta Materialia, 54, 6, pp. 1093-1097, (2006)
  • [9] ZHANG L J, XUAN Q Q, WANG J G, Et al., Effects of TiB<sub>2</sub> content and alloy elements (Mg, Mo, V) on the compression properties of high-volume-fraction TiB<sub>2</sub>/Al composites, Materials Science and Engineering: A, 607, pp. 28-32, (2014)
  • [10] GAJAKOSH A K, KESHAVAMURTHY R, UGRASEN G, Et al., Investigation on mechanical behavior of hot rolled Al7075-TiB<sub>2</sub> in situ metal matrix composite, Materials Today: Proceedings, 5, 11, pp. 25605-25614, (2018)
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