激光功率对激光熔化沉积 Ti-6Al-4V-0.25C 合金组织和性能的影响

Guohao Shi; Xiaopeng Wang; Yuyong Chen; Zhiming Du

激光功率对激光熔化沉积 Ti-6Al-4V-0.25C 合金组织和性能的影响

Translated title of the contribution: Effect of Laser Powder on the Microstructure and Properties of Ti-6Al-4V-0.25C Alloys by Laser Melting Deposition

Guohao Shi
, Xiaopeng Wang
, Yuyong Chen^*
, Zhiming Du

^*Corresponding author for this work

Harbin Institute of Technology
Harbin Institute of Technology

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

The effect of laser power on microstructure and properties of Ti-6Al-4V-0.25C alloy was studied by laser melting deposition of Ti-6Al-4V-0.25C prealloy powder containing 0.25wt% C. The results show that the microstructure of Ti-6Al-4V-0.25C alloy is equiaxed grain morphology, and layered α+β structure is formed inside the grains. The average grain size and α lath size increase gradually with the increase of laser power. In addition, with the increase of laser power, the tensile properties of the alloy are obviously improved, especially the ultimate tensile strength, yield strength and elongation of the alloy prepared at the laser power of 1500 W are 1191 MPa, 1129 MPa and 8.3%, respectively. On the one hand, the porosity of the alloy decreases with the increase of laser power. On the other hand, Ti-6Al-4V alloy contains trace element C. During the cooling/solidification process, C atoms are solidly dissolved in Ti matrix, resulting in solid solution strengthening.

Translated title of the contribution	Effect of Laser Powder on the Microstructure and Properties of Ti-6Al-4V-0.25C Alloys by Laser Melting Deposition
Original language	Chinese (Traditional)
Pages (from-to)	4570-4578
Number of pages	9
Journal	Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
Volume	51
Issue number	12
State	Published - 1 Dec 2022
Externally published	Yes

Cite this

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title = "激光功率对激光熔化沉积 Ti-6Al-4V-0.25C 合金组织和性能的影响",

abstract = "The effect of laser power on microstructure and properties of Ti-6Al-4V-0.25C alloy was studied by laser melting deposition of Ti-6Al-4V-0.25C prealloy powder containing 0.25wt\% C. The results show that the microstructure of Ti-6Al-4V-0.25C alloy is equiaxed grain morphology, and layered α+β structure is formed inside the grains. The average grain size and α lath size increase gradually with the increase of laser power. In addition, with the increase of laser power, the tensile properties of the alloy are obviously improved, especially the ultimate tensile strength, yield strength and elongation of the alloy prepared at the laser power of 1500 W are 1191 MPa, 1129 MPa and 8.3\%, respectively. On the one hand, the porosity of the alloy decreases with the increase of laser power. On the other hand, Ti-6Al-4V alloy contains trace element C. During the cooling/solidification process, C atoms are solidly dissolved in Ti matrix, resulting in solid solution strengthening.",

keywords = "laser melting deposition, mechanical properties, microstructure, titanium alloy",

author = "Guohao Shi and Xiaopeng Wang and Yuyong Chen and Zhiming Du",

year = "2022",

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pages = "4570--4578",

journal = "Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering",

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T1 - 激光功率对激光熔化沉积 Ti-6Al-4V-0.25C 合金组织和性能的影响

AU - Shi, Guohao

AU - Wang, Xiaopeng

AU - Chen, Yuyong

AU - Du, Zhiming

PY - 2022/12/1

Y1 - 2022/12/1

N2 - The effect of laser power on microstructure and properties of Ti-6Al-4V-0.25C alloy was studied by laser melting deposition of Ti-6Al-4V-0.25C prealloy powder containing 0.25wt% C. The results show that the microstructure of Ti-6Al-4V-0.25C alloy is equiaxed grain morphology, and layered α+β structure is formed inside the grains. The average grain size and α lath size increase gradually with the increase of laser power. In addition, with the increase of laser power, the tensile properties of the alloy are obviously improved, especially the ultimate tensile strength, yield strength and elongation of the alloy prepared at the laser power of 1500 W are 1191 MPa, 1129 MPa and 8.3%, respectively. On the one hand, the porosity of the alloy decreases with the increase of laser power. On the other hand, Ti-6Al-4V alloy contains trace element C. During the cooling/solidification process, C atoms are solidly dissolved in Ti matrix, resulting in solid solution strengthening.

AB - The effect of laser power on microstructure and properties of Ti-6Al-4V-0.25C alloy was studied by laser melting deposition of Ti-6Al-4V-0.25C prealloy powder containing 0.25wt% C. The results show that the microstructure of Ti-6Al-4V-0.25C alloy is equiaxed grain morphology, and layered α+β structure is formed inside the grains. The average grain size and α lath size increase gradually with the increase of laser power. In addition, with the increase of laser power, the tensile properties of the alloy are obviously improved, especially the ultimate tensile strength, yield strength and elongation of the alloy prepared at the laser power of 1500 W are 1191 MPa, 1129 MPa and 8.3%, respectively. On the one hand, the porosity of the alloy decreases with the increase of laser power. On the other hand, Ti-6Al-4V alloy contains trace element C. During the cooling/solidification process, C atoms are solidly dissolved in Ti matrix, resulting in solid solution strengthening.

KW - laser melting deposition

KW - mechanical properties

KW - microstructure

KW - titanium alloy

UR - https://www.scopus.com/pages/publications/85147249986

M3 - 文章

AN - SCOPUS:85147249986

SN - 1002-185X

VL - 51

SP - 4570

EP - 4578

JO - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

JF - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

IS - 12

ER -

激光功率对激光熔化沉积 Ti-6Al-4V-0.25C 合金组织和性能的影响

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