Synergistic enhancement of strength and plasticity for laser direct energy deposited Ti60 joint by locally applied laser shock peening

Yongxin Zhang; Wei Guo; Hongyu Zhang; Peipei Han; Shijian Li; Jinbin Zhao; Zhanbo Cui; Ying Zhu; Hongqiang Zhang

doi:10.1016/j.msea.2025.148255

Synergistic enhancement of strength and plasticity for laser direct energy deposited Ti60 joint by locally applied laser shock peening

Yongxin Zhang
, Wei Guo
, Hongyu Zhang
, Peipei Han
, Shijian Li
, Jinbin Zhao
, Zhanbo Cui
, Ying Zhu
, Hongqiang Zhang^*

^*Corresponding author for this work

School of Mechanical Engineering and Automation

Beihang University
China Aviation Industry Corporation
CAS - Shenyang Institute of Automation
Shijiazhuang Haishan Industrial Development Corporation

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

17 Scopus citations

Abstract

This study employed a composite method of laser direct energy deposition (LDED) and laser shock peening (LSP) to repair Ti60 alloy. The results showed that the spherical α_p phase dissolved and the clustered α_s lamellae transform into basketweave α plates from the substrate zone (SZ) to heat affected zone (HAZ) and laser deposition zone (LDZ) in the LDEDed joint. These microstructure differences resulted in the SZ becoming the weak strength side, dominating the tensile properties of the LDEDed joint. LSP treatment was performed only on the SZ side, improving the tensile strength of the SZ and activating the inherent plastic deformation capabilities of the LDZ, thereby achieving a synergistic enhancement of the strength and plasticity of the repaired Ti60 parts.

Original language	English
Article number	148255
Journal	Materials Science and Engineering: A
Volume	932
DOIs	https://doi.org/10.1016/j.msea.2025.148255
State	Published - Jun 2025

Keywords

Laser direct energy deposition
Laser shock peening
Microstructure
Plastic deformation
Tensile strength

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10.1016/j.msea.2025.148255

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@article{1a369ba59a3b48da8dc366b2bc8f08f6,

title = "Synergistic enhancement of strength and plasticity for laser direct energy deposited Ti60 joint by locally applied laser shock peening",

abstract = "This study employed a composite method of laser direct energy deposition (LDED) and laser shock peening (LSP) to repair Ti60 alloy. The results showed that the spherical αp phase dissolved and the clustered αs lamellae transform into basketweave α plates from the substrate zone (SZ) to heat affected zone (HAZ) and laser deposition zone (LDZ) in the LDEDed joint. These microstructure differences resulted in the SZ becoming the weak strength side, dominating the tensile properties of the LDEDed joint. LSP treatment was performed only on the SZ side, improving the tensile strength of the SZ and activating the inherent plastic deformation capabilities of the LDZ, thereby achieving a synergistic enhancement of the strength and plasticity of the repaired Ti60 parts.",

keywords = "Laser direct energy deposition, Laser shock peening, Microstructure, Plastic deformation, Tensile strength",

author = "Yongxin Zhang and Wei Guo and Hongyu Zhang and Peipei Han and Shijian Li and Jinbin Zhao and Zhanbo Cui and Ying Zhu and Hongqiang Zhang",

note = "Publisher Copyright: {\textcopyright} 2025 Elsevier B.V.",

year = "2025",

month = jun,

doi = "10.1016/j.msea.2025.148255",

language = "英语",

volume = "932",

journal = "Materials Science and Engineering: A",

issn = "0921-5093",

publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - Synergistic enhancement of strength and plasticity for laser direct energy deposited Ti60 joint by locally applied laser shock peening

AU - Zhang, Yongxin

AU - Guo, Wei

AU - Zhang, Hongyu

AU - Han, Peipei

AU - Li, Shijian

AU - Zhao, Jinbin

AU - Cui, Zhanbo

AU - Zhu, Ying

AU - Zhang, Hongqiang

PY - 2025/6

Y1 - 2025/6

N2 - This study employed a composite method of laser direct energy deposition (LDED) and laser shock peening (LSP) to repair Ti60 alloy. The results showed that the spherical αp phase dissolved and the clustered αs lamellae transform into basketweave α plates from the substrate zone (SZ) to heat affected zone (HAZ) and laser deposition zone (LDZ) in the LDEDed joint. These microstructure differences resulted in the SZ becoming the weak strength side, dominating the tensile properties of the LDEDed joint. LSP treatment was performed only on the SZ side, improving the tensile strength of the SZ and activating the inherent plastic deformation capabilities of the LDZ, thereby achieving a synergistic enhancement of the strength and plasticity of the repaired Ti60 parts.

AB - This study employed a composite method of laser direct energy deposition (LDED) and laser shock peening (LSP) to repair Ti60 alloy. The results showed that the spherical αp phase dissolved and the clustered αs lamellae transform into basketweave α plates from the substrate zone (SZ) to heat affected zone (HAZ) and laser deposition zone (LDZ) in the LDEDed joint. These microstructure differences resulted in the SZ becoming the weak strength side, dominating the tensile properties of the LDEDed joint. LSP treatment was performed only on the SZ side, improving the tensile strength of the SZ and activating the inherent plastic deformation capabilities of the LDZ, thereby achieving a synergistic enhancement of the strength and plasticity of the repaired Ti60 parts.

KW - Laser direct energy deposition

KW - Laser shock peening

KW - Microstructure

KW - Plastic deformation

KW - Tensile strength

UR - https://www.scopus.com/pages/publications/105001110118

U2 - 10.1016/j.msea.2025.148255

DO - 10.1016/j.msea.2025.148255

M3 - 文章

AN - SCOPUS:105001110118

SN - 0921-5093

VL - 932

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

M1 - 148255

ER -

Synergistic enhancement of strength and plasticity for laser direct energy deposited Ti60 joint by locally applied laser shock peening

Abstract

Keywords

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