Microstructure and Mechanical Properties of TA15 Titanium Component Manufactured via Laser Additive Connection

Jianwei Mou; Chuanjun Yu; Haibo Tang; Shuquan Zhang; Yanyan Zhu; Xiangjun Tian

doi:10.3788/CJL221345

Chinese Journal of Lasers, Volume. 50, Issue 16, 1602302(2023)

Microstructure and Mechanical Properties of TA15 Titanium Component Manufactured via Laser Additive Connection

Jianwei Mou¹, Chuanjun Yu¹, Haibo Tang², Shuquan Zhang², Yanyan Zhu², and Xiangjun Tian^2、*

Author Affiliations

¹Shenyang Aircraft Industry (Group) Corporation Limited, Shenyang 110031, Liaoning, China

²National Engineering Laboratory for Additive Manufacturing of Large Scale Metal Components, Beihang University, Beijing 100191, China

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Figures & Tables(14)

Fig. 1. Forming process diagram of TA15 titanium alloy samples by laser additive connection (arrows indicate deposition direction)

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Fig. 2. Sampling diagram in connection area of TA15 titanium alloy sample formed by laser additive connection

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Fig. 3. Sampling diagram in tensile test at room temperature

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Fig. 4. Sampling diagram in impact test at room temperature

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$Sampling diagram in fracture toughness test at room temperature. (a) Front view; (b) top view$

Fig. 5. Sampling diagram in fracture toughness test at room temperature. (a) Front view; (b) top view

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Fig. 6. Low magnification microstructures of binding zone of TA15 titanium alloy sample formed by laser additive connection. (a) T-direction, cross section; (b) L-direction, longitudinal section

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Fig. 7. Morphologies of different regions in longitudinal section of TA15 sample formed by laser additive connection

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Fig. 8. SEM images of different regions in cross section of TA15 sample formed by laser additive connection. (a) Connection zone; (b) base zone

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$Tensile fracture morphologies in binding zone of TA15 sample formed by laser additive connection at room temperature. (a)(c) Fracture at base zone; (b)(d) fracture at connection zone$

Fig. 9. Tensile fracture morphologies in binding zone of TA15 sample formed by laser additive connection at room temperature. (a)(c) Fracture at base zone; (b)(d) fracture at connection zone

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$Fracture morphologies in bonding zone of TA15 sample formed by laser additive connection in fracture toughness test at room temperature. (a) Macroscopic fracture morphology; (b)(c) low magnification images; (d)(e) high magnification images$

Fig. 10. Fracture morphologies in bonding zone of TA15 sample formed by laser additive connection in fracture toughness test at room temperature. (a) Macroscopic fracture morphology; (b)(c) low magnification images; (d)(e) high magnification images

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Table 1. Chemical compositions of TA15 titanium alloy powders and TA15 samples formed by laser additive connection (mass fraction, %)

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Table 1. Chemical compositions of TA15 titanium alloy powders and TA15 samples formed by laser additive connection (mass fraction, %)

Material	Ti	Al	Mo	V	Zr	Fe	C	N	H	O
Powder	Bal.	6.6400	1.5400	2.0400	2.1100	0.0500	0.0130	0.0120	0.0024	0.1100
Base zone of TA15 samples	Bal.	6.5900	1.6400	2.1000	2.1400	0.0280	0.0130	0.0120	<0.0010	0.1300
Connection zone of TA15 samples	Bal.	6.4600	1.6200	2.0700	2.1000	0.0380	0.0150	0.0140	0.0027	0.1200

Table 2. Tensile properties of TA15 titanium alloy sample formed by laser additive connection at room temperature
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Table 2. Tensile properties of TA15 titanium alloy sample formed by laser additive connection at room temperature
Sampling position Direction Ultimate tensile strength /MPa Yield strength /MPa Elongation /% Reduction in area /%
Bonding zone T 1046 974 7.2 18.8
Base zone T 1022 945 9.5 22.2
Forging standard - ≥930 ≥855 ≥6 ≥12

Table 3. Impact properties of TA15 sample formed by laser additive connection at room temperature
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Table 3. Impact properties of TA15 sample formed by laser additive connection at room temperature
Sampling position Sample
Impact toughness /
（J·cm^-2）
Bonding zone T-I sample 33.96
T-II sample 33.17
Base zone T sample 31.60

Table 4. Fracture toughness of TA15 sample formed by laser additive connection
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Table 4. Fracture toughness of TA15 sample formed by laser additive connection
Sampling position Sample Average of fracture toughness /（MPa·m^1/2）
Bonding zone ST sample 78.2
TS sample 72.6
Base zone TS sample 67.9

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Jianwei Mou, Chuanjun Yu, Haibo Tang, Shuquan Zhang, Yanyan Zhu, Xiangjun Tian. Microstructure and Mechanical Properties of TA15 Titanium Component Manufactured via Laser Additive Connection[J]. Chinese Journal of Lasers, 2023, 50(16): 1602302

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Paper Information

Category: Laser Additive Manufacturing

Received: Oct. 20, 2022

Accepted: Dec. 6, 2022

Published Online: Jul. 18, 2023

The Author Email: Tian Xiangjun (tianxj@buaa.edu.cn)

DOI:10.3788/CJL221345

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Chemical compositions of TA15 titanium alloy powders and TA15 samples formed by laser additive connection (mass fraction, %)

Table 1. Chemical compositions of TA15 titanium alloy powders and TA15 samples formed by laser additive connection (mass fraction, %)

Table 2. Tensile properties of TA15 titanium alloy sample formed by laser additive connection at room temperature

Table 2. Tensile properties of TA15 titanium alloy sample formed by laser additive connection at room temperature

Table 3. Impact properties of TA15 sample formed by laser additive connection at room temperature

Table 3. Impact properties of TA15 sample formed by laser additive connection at room temperature

Table 4. Fracture toughness of TA15 sample formed by laser additive connection

Table 4. Fracture toughness of TA15 sample formed by laser additive connection