Effects of Laser Shock Processing on Impact Toughness of Ti-17 Titanium Alloy

Shuai Huang; Ying Zhu; Wei Guo; Peng Peng; Xungang Diao

doi:10.1515/htmp-2016-0106

Effects of Laser Shock Processing on Impact Toughness of Ti-17 Titanium Alloy

Shuai Huang
, Ying Zhu
, Wei Guo^*
, Peng Peng
, Xungang Diao

^*Corresponding author for this work

Beihang University

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

2 Scopus citations

Abstract

Ti-17 titanium alloy was treated with laser shock processing (LSP) and tested for impact toughness. Residual compressive stress, cross-section hardness, microstructure, and the impact toughness properties of the treated alloy samples were evaluated. The average impact toughness of the samples subjected to LSP increased by 10J compared with that of the base material. The samples subjected to LSP remained connected after an impact test, whereas untreated samples completely ruptured. The location of fracture initiation shifted from the center to the side to the Charpy-V notch region because of the stress concentration induced by LSP. The stress concentration was induced by the uneven microhardness of the samples treated with LSP. The hardness of the irradiated surface increased compared with that of the base metal because of the higher dislocation density and smaller grains produced by LSP.

Original language	English
Pages (from-to)	325-332
Number of pages	8
Journal	High Temperature Materials and Processes
Volume	37
Issue number	4
DOIs	https://doi.org/10.1515/htmp-2016-0106
State	Published - 26 Mar 2018

Keywords

Laser shock processing (LSP)
fracture morphology
impact toughness
microstructure

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title = "Effects of Laser Shock Processing on Impact Toughness of Ti-17 Titanium Alloy",

abstract = "Ti-17 titanium alloy was treated with laser shock processing (LSP) and tested for impact toughness. Residual compressive stress, cross-section hardness, microstructure, and the impact toughness properties of the treated alloy samples were evaluated. The average impact toughness of the samples subjected to LSP increased by 10J compared with that of the base material. The samples subjected to LSP remained connected after an impact test, whereas untreated samples completely ruptured. The location of fracture initiation shifted from the center to the side to the Charpy-V notch region because of the stress concentration induced by LSP. The stress concentration was induced by the uneven microhardness of the samples treated with LSP. The hardness of the irradiated surface increased compared with that of the base metal because of the higher dislocation density and smaller grains produced by LSP.",

keywords = "Laser shock processing (LSP), fracture morphology, impact toughness, microstructure",

author = "Shuai Huang and Ying Zhu and Wei Guo and Peng Peng and Xungang Diao",

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year = "2018",

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doi = "10.1515/htmp-2016-0106",

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TY - JOUR

T1 - Effects of Laser Shock Processing on Impact Toughness of Ti-17 Titanium Alloy

AU - Huang, Shuai

AU - Zhu, Ying

AU - Guo, Wei

AU - Peng, Peng

AU - Diao, Xungang

PY - 2018/3/26

Y1 - 2018/3/26

N2 - Ti-17 titanium alloy was treated with laser shock processing (LSP) and tested for impact toughness. Residual compressive stress, cross-section hardness, microstructure, and the impact toughness properties of the treated alloy samples were evaluated. The average impact toughness of the samples subjected to LSP increased by 10J compared with that of the base material. The samples subjected to LSP remained connected after an impact test, whereas untreated samples completely ruptured. The location of fracture initiation shifted from the center to the side to the Charpy-V notch region because of the stress concentration induced by LSP. The stress concentration was induced by the uneven microhardness of the samples treated with LSP. The hardness of the irradiated surface increased compared with that of the base metal because of the higher dislocation density and smaller grains produced by LSP.

AB - Ti-17 titanium alloy was treated with laser shock processing (LSP) and tested for impact toughness. Residual compressive stress, cross-section hardness, microstructure, and the impact toughness properties of the treated alloy samples were evaluated. The average impact toughness of the samples subjected to LSP increased by 10J compared with that of the base material. The samples subjected to LSP remained connected after an impact test, whereas untreated samples completely ruptured. The location of fracture initiation shifted from the center to the side to the Charpy-V notch region because of the stress concentration induced by LSP. The stress concentration was induced by the uneven microhardness of the samples treated with LSP. The hardness of the irradiated surface increased compared with that of the base metal because of the higher dislocation density and smaller grains produced by LSP.

KW - Laser shock processing (LSP)

KW - fracture morphology

KW - impact toughness

KW - microstructure

UR - https://www.scopus.com/pages/publications/85045008251

U2 - 10.1515/htmp-2016-0106

DO - 10.1515/htmp-2016-0106

M3 - 文章

AN - SCOPUS:85045008251

SN - 0334-6455

VL - 37

SP - 325

EP - 332

JO - High Temperature Materials and Processes

JF - High Temperature Materials and Processes

IS - 4

ER -

Effects of Laser Shock Processing on Impact Toughness of Ti-17 Titanium Alloy

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