In situ tailoring microstructure in laser solid formed titanium alloy for superior fatigue crack growth resistance

Zhuang Zhao; Jing Chen; Hua Tan; Jingang Tang; Xin Lin

doi:10.1016/j.scriptamat.2019.08.028

In situ tailoring microstructure in laser solid formed titanium alloy for superior fatigue crack growth resistance

Zhuang Zhao, Jing Chen, Hua Tan, Jingang Tang, Xin Lin

School of Materials Sience and Engineering

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

42 Scopus citations

Abstract

For damage tolerance (DT) titanium alloy, the fatigue crack growth resistance (FCGR) is a critical properties requirement for engineering applications. However, the Ti-6Al-4V-DT parts fabricated by laser solid forming (LSF) suffer from low FCGR, because of predominant basket-wave microstructure. Here, we have explored a novel LSF fabrication design to produce full colony microstructure, via in-situ controlled growth. The creation of such microstructures leads to superior FCGR, which markedly exceed conventional additive manufactured and mill-annealed samples. The present works provide a significant guidance for LSF-fabricated titanium alloy with high DT properties.

Original language	English
Pages (from-to)	53-57
Number of pages	5
Journal	Scripta Materialia
Volume	174
DOIs	https://doi.org/10.1016/j.scriptamat.2019.08.028
State	Published - 1 Jan 2020

Keywords

Colony microstructure
Fatigue crack growth resistance
Laser solid forming
Titanium alloy

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10.1016/j.scriptamat.2019.08.028

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title = "In situ tailoring microstructure in laser solid formed titanium alloy for superior fatigue crack growth resistance",

abstract = "For damage tolerance (DT) titanium alloy, the fatigue crack growth resistance (FCGR) is a critical properties requirement for engineering applications. However, the Ti-6Al-4V-DT parts fabricated by laser solid forming (LSF) suffer from low FCGR, because of predominant basket-wave microstructure. Here, we have explored a novel LSF fabrication design to produce full colony microstructure, via in-situ controlled growth. The creation of such microstructures leads to superior FCGR, which markedly exceed conventional additive manufactured and mill-annealed samples. The present works provide a significant guidance for LSF-fabricated titanium alloy with high DT properties.",

keywords = "Colony microstructure, Fatigue crack growth resistance, Laser solid forming, Titanium alloy",

author = "Zhuang Zhao and Jing Chen and Hua Tan and Jingang Tang and Xin Lin",

note = "Publisher Copyright: {\textcopyright} 2019",

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T1 - In situ tailoring microstructure in laser solid formed titanium alloy for superior fatigue crack growth resistance

AU - Zhao, Zhuang

AU - Chen, Jing

AU - Tan, Hua

AU - Tang, Jingang

AU - Lin, Xin

PY - 2020/1/1

Y1 - 2020/1/1

N2 - For damage tolerance (DT) titanium alloy, the fatigue crack growth resistance (FCGR) is a critical properties requirement for engineering applications. However, the Ti-6Al-4V-DT parts fabricated by laser solid forming (LSF) suffer from low FCGR, because of predominant basket-wave microstructure. Here, we have explored a novel LSF fabrication design to produce full colony microstructure, via in-situ controlled growth. The creation of such microstructures leads to superior FCGR, which markedly exceed conventional additive manufactured and mill-annealed samples. The present works provide a significant guidance for LSF-fabricated titanium alloy with high DT properties.

AB - For damage tolerance (DT) titanium alloy, the fatigue crack growth resistance (FCGR) is a critical properties requirement for engineering applications. However, the Ti-6Al-4V-DT parts fabricated by laser solid forming (LSF) suffer from low FCGR, because of predominant basket-wave microstructure. Here, we have explored a novel LSF fabrication design to produce full colony microstructure, via in-situ controlled growth. The creation of such microstructures leads to superior FCGR, which markedly exceed conventional additive manufactured and mill-annealed samples. The present works provide a significant guidance for LSF-fabricated titanium alloy with high DT properties.

KW - Colony microstructure

KW - Fatigue crack growth resistance

KW - Laser solid forming

KW - Titanium alloy

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DO - 10.1016/j.scriptamat.2019.08.028

M3 - 文章

AN - SCOPUS:85071563077

SN - 1359-6462

VL - 174

SP - 53

EP - 57

JO - Scripta Materialia

JF - Scripta Materialia

ER -

In situ tailoring microstructure in laser solid formed titanium alloy for superior fatigue crack growth resistance

Abstract

Keywords

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