Effect of TiB<sub>2</sub> Content on Microstructure and Mechanical Properties of TiB/Ti-6Al-4V Composites Formed by Selective Laser Melting

Lanyun Qin; Jihua Men; Shuo Zhao; Guang Yang; Wei Wang; Xiangming Wang

doi:10.3788/CJL202148.0602102

Chinese Journal of Lasers, Volume. 48, Issue 6, 0602102(2021)

Effect of TiB₂ Content on Microstructure and Mechanical Properties of TiB/Ti-6Al-4V Composites Formed by Selective Laser Melting

Lanyun Qin¹, Jihua Men¹, Shuo Zhao¹, Guang Yang^1、*, Wei Wang¹, and Xiangming Wang²

Author Affiliations

¹Key Laboratory of Fundamental Science for National Defense of Aeronautical Digital Manufacturing Process, Shenyang Aerospace University, Shenyang, Liaoning 110136, China

²Shenyang Aircraft Design Institute, China Aviation Industry Group Corporation, Shenyang, Liaoning 110035, China

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Figures & Tables(11)

Fig. 1. Images of original powders and particle size distribution of Ti-6Al-4V powder. (a)Ti-6Al-4V powder image and particle size distribution; (b) TiB₂ powder image

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Fig. 2. Morphologies of ball-mixed powders. (a) Mixed powder 0.5%B/Ti-6Al-4V; (b) particle of mixed powder 0.05%B/Ti-6Al-4V; (c) particle of mixed powder 0.5%B/Ti-6Al-4V; (d) particle of mixed powder 1.0%B/Ti-6Al-4V

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Fig. 3. XRD patterns of Ti-6Al-4V and titanium matrix composites

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Fig. 4. Microstructures of titanium matrix composites. (a) Macrostructure (OM) of TMC2; (b) microstructure (SEM) of TMC1; (c) microstructure (SEM) of TMC2; (d) microstructure (SEM) of TMC3; (e) EDS analysis on point 1 in Fig.4 (c)

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Fig. 5. EBSD analysis and α lamella size statistics of Ti-6Al-4V and titanium matrix composites. (a) Ti-6Al-4V; (b) TMC1; (c) TMC2; (d) TMC3

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Fig. 6. Ti-B binary phase diagram

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Fig. 7. Microhardness of Ti-6Al-4V and titanium matrix composites

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Fig. 8. Stress-strain curves of Ti-6Al-4V and titanium matrix composites

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Table 1. Sample name and contents of TiB₂ and B elements in each sample
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Table 1. Sample name and contents of TiB₂ and B elements in each sample
Sample name Mass fraction of TiB₂ /% Mass fraction of B /% Powder name
Ti-6Al-4V 0 0 Ti-6Al-4V
TMC1 0.16 0.05 0.05%B/Ti-6Al-4V
TMC2 1.61 0.50 0.5%B/Ti-6Al-4V
TMC3 3.22 1.00 1.0%B/Ti-6Al-4V

Table 2. Tensile properties of Ti-6Al-4V and titanium matrix composites at room temperature
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Table 2. Tensile properties of Ti-6Al-4V and titanium matrix composites at room temperature
Material Elongation /% Reduction of area /% Yield strength /MPa Tensile strength /MPa
Ti-6Al-4V 10.2 24.5 1011.0 1111.3
TMC1 9.2 18.0 1196.8 1274.8
TMC2 4.7 6.6 1322.2 1396.4
TMC3 1.8 3.2 1306.6 1368.1

Table 3. Comparison of tensile properties of TiB/Ti-6Al-4V composites formed by different processes

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Table 3. Comparison of tensile properties of TiB/Ti-6Al-4V composites formed by different processes

Material	Processing method	Tensile strength /MPa	Elongation /%	Reference
0.5%B/Ti-6Al-4V(mass fraction)	Selective laser melting	1396.4	4.7	This work
3.5%TiB₂/Ti-6Al-4V(volume fraction)	Multiple forging	1286	4.7	[12]
3%TiB/Ti-6Al-4V(mass fraction)	Hot isostatic pressing	1063±12	10.1±1.3	[13]
5%TiB/Ti-6Al-4V(mass fraction)	Hot isostatic pressing	1284±43	6.7±1.0	[13]
Ti-6Al-4V	Selective laser melting	1111.3	10.2	This work

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Lanyun Qin, Jihua Men, Shuo Zhao, Guang Yang, Wei Wang, Xiangming Wang. Effect of TiB₂ Content on Microstructure and Mechanical Properties of TiB/Ti-6Al-4V Composites Formed by Selective Laser Melting[J]. Chinese Journal of Lasers, 2021, 48(6): 0602102

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Paper Information

Category: Laser Material Processing

Received: Jul. 14, 2020

Accepted: Aug. 13, 2020

Published Online: Mar. 8, 2021

The Author Email: Guang Yang (yangguang@sau.edu.cn)

DOI:10.3788/CJL202148.0602102

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Sample name and contents of TiB2 and B elements in each sample

Table 1. Sample name and contents of TiB2 and B elements in each sample

Table 2. Tensile properties of Ti-6Al-4V and titanium matrix composites at room temperature

Table 2. Tensile properties of Ti-6Al-4V and titanium matrix composites at room temperature

Table 3. Comparison of tensile properties of TiB/Ti-6Al-4V composites formed by different processes

Table 3. Comparison of tensile properties of TiB/Ti-6Al-4V composites formed by different processes

Table 1. Sample name and contents of TiB₂ and B elements in each sample

Table 1. Sample name and contents of TiB₂ and B elements in each sample