Effect of build orientation on dynamic compressive behaviour of Ti-6Al-4V alloy fabricated by selective laser melting

Ye Yuan; Yufeng Zhang; Yang Qiao; Jing Xie; Qingfeng Xu; Yuanshen Qi; Wangfeng Zhang; Pengwan Chen

doi:10.1016/j.msea.2022.144440

Effect of build orientation on dynamic compressive behaviour of Ti-6Al-4V alloy fabricated by selective laser melting

Ye Yuan, Yufeng Zhang, Yang Qiao, Jing Xie^*, Qingfeng Xu, Yuanshen Qi, Wangfeng Zhang, Pengwan Chen^*

^*Corresponding author for this work

Materials Science and Engineering

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

11 Scopus citations

Abstract

This study presents an experimental investigation on elucidating the influence of build orientation on the microstructure and macroscopic response of the selective laser melted (SLM) Ti-6Al-4V alloy under compressive loading at varying strain rates. Quasi-static (at 0.001 s−1) uniaxial compression and dynamic impact tests (up to 4500 s−1) were carried out on specimens with their building directions either being parallel, diagonal or normal to the loading direction. The initial microstructure, dynamic compression stress–strain response, strain rate sensitivity, strain rate hardening effect, adiabatic temperature rise, and fracture behaviours are discussed. The results show that although the build orientation has a negligible influence upon the adiabatic temperature rise, the yield strength and strain-hardening rate of the SLM Ti-6Al-4V alloy are both build orientation and strain-rate dependent. Fractographic examination of the fragmented specimens under quasi-static and impact loading reveals ductile dimples and smooth surfaces, which indicate the coexistence of both ductile and brittle fractures. Although build orientation barely affects the fracture topology of quasi-static compressed specimens, it has a notable impact on facture morphology for dynamically loaded specimens.

Original language	English
Journal	Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
DOIs	https://doi.org/10.1016/j.msea.2022.144440
State	E-pub ahead of print - 7 Dec 2022

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Yuan, Y., Zhang, Y., Qiao, Y., Xie, J., Xu, Q., Qi, Y., Zhang, W., & Chen, P. (2022). Effect of build orientation on dynamic compressive behaviour of Ti-6Al-4V alloy fabricated by selective laser melting. Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing. Advance online publication. https://doi.org/10.1016/j.msea.2022.144440

@article{39ba5a17e2774125ba27a27eb232257a,

title = "Effect of build orientation on dynamic compressive behaviour of Ti-6Al-4V alloy fabricated by selective laser melting",

abstract = "This study presents an experimental investigation on elucidating the influence of build orientation on the microstructure and macroscopic response of the selective laser melted (SLM) Ti-6Al-4V alloy under compressive loading at varying strain rates. Quasi-static (at 0.001 s−1) uniaxial compression and dynamic impact tests (up to 4500 s−1) were carried out on specimens with their building directions either being parallel, diagonal or normal to the loading direction. The initial microstructure, dynamic compression stress–strain response, strain rate sensitivity, strain rate hardening effect, adiabatic temperature rise, and fracture behaviours are discussed. The results show that although the build orientation has a negligible influence upon the adiabatic temperature rise, the yield strength and strain-hardening rate of the SLM Ti-6Al-4V alloy are both build orientation and strain-rate dependent. Fractographic examination of the fragmented specimens under quasi-static and impact loading reveals ductile dimples and smooth surfaces, which indicate the coexistence of both ductile and brittle fractures. Although build orientation barely affects the fracture topology of quasi-static compressed specimens, it has a notable impact on facture morphology for dynamically loaded specimens.",

author = "Ye Yuan and Yufeng Zhang and Yang Qiao and Jing Xie and Qingfeng Xu and Yuanshen Qi and Wangfeng Zhang and Pengwan Chen",

year = "2022",

month = dec,

day = "7",

doi = "10.1016/j.msea.2022.144440",

language = "英语",

journal = "Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing",

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}

TY - JOUR

T1 - Effect of build orientation on dynamic compressive behaviour of Ti-6Al-4V alloy fabricated by selective laser melting

AU - Yuan, Ye

AU - Zhang, Yufeng

AU - Qiao, Yang

AU - Xie, Jing

AU - Xu, Qingfeng

AU - Qi, Yuanshen

AU - Zhang, Wangfeng

AU - Chen, Pengwan

PY - 2022/12/7

Y1 - 2022/12/7

N2 - This study presents an experimental investigation on elucidating the influence of build orientation on the microstructure and macroscopic response of the selective laser melted (SLM) Ti-6Al-4V alloy under compressive loading at varying strain rates. Quasi-static (at 0.001 s−1) uniaxial compression and dynamic impact tests (up to 4500 s−1) were carried out on specimens with their building directions either being parallel, diagonal or normal to the loading direction. The initial microstructure, dynamic compression stress–strain response, strain rate sensitivity, strain rate hardening effect, adiabatic temperature rise, and fracture behaviours are discussed. The results show that although the build orientation has a negligible influence upon the adiabatic temperature rise, the yield strength and strain-hardening rate of the SLM Ti-6Al-4V alloy are both build orientation and strain-rate dependent. Fractographic examination of the fragmented specimens under quasi-static and impact loading reveals ductile dimples and smooth surfaces, which indicate the coexistence of both ductile and brittle fractures. Although build orientation barely affects the fracture topology of quasi-static compressed specimens, it has a notable impact on facture morphology for dynamically loaded specimens.

AB - This study presents an experimental investigation on elucidating the influence of build orientation on the microstructure and macroscopic response of the selective laser melted (SLM) Ti-6Al-4V alloy under compressive loading at varying strain rates. Quasi-static (at 0.001 s−1) uniaxial compression and dynamic impact tests (up to 4500 s−1) were carried out on specimens with their building directions either being parallel, diagonal or normal to the loading direction. The initial microstructure, dynamic compression stress–strain response, strain rate sensitivity, strain rate hardening effect, adiabatic temperature rise, and fracture behaviours are discussed. The results show that although the build orientation has a negligible influence upon the adiabatic temperature rise, the yield strength and strain-hardening rate of the SLM Ti-6Al-4V alloy are both build orientation and strain-rate dependent. Fractographic examination of the fragmented specimens under quasi-static and impact loading reveals ductile dimples and smooth surfaces, which indicate the coexistence of both ductile and brittle fractures. Although build orientation barely affects the fracture topology of quasi-static compressed specimens, it has a notable impact on facture morphology for dynamically loaded specimens.

U2 - 10.1016/j.msea.2022.144440

DO - 10.1016/j.msea.2022.144440

M3 - 文章

SN - 0921-5093

JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

ER -

Effect of build orientation on dynamic compressive behaviour of Ti-6Al-4V alloy fabricated by selective laser melting

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