In Situ Tensile Observation of the Effect of Annealing on Fracture Behavior of Laser Additive Manufactured Titanium Alloy

Ming Xu; Huaixue Li; Qi Liu; Feihu Shan; Yongxin Zhang; Wei Guo; Fei Li; Hongqiang Zhang

doi:10.3390/ma16113973

In Situ Tensile Observation of the Effect of Annealing on Fracture Behavior of Laser Additive Manufactured Titanium Alloy

Ming Xu
, Huaixue Li
, Qi Liu
, Feihu Shan
, Yongxin Zhang^*
, Wei Guo
, Fei Li
, Hongqiang Zhang^*

^*此作品的通讯作者

机械工程及自动化学院

China Aviation Industry Corporation
Key Laboratory of Aeronautical Technology on Additive Manufacturing
Beihang University

科研成果: 期刊稿件 › 文章 › 同行评审

6 引用（Scopus）

摘要

The use safety of laser additive manufactured (LAM) titanium alloys is closely related to each one’s fracture failure mode. In this study, in situ tensile tests were carried out to study the deformation and fracture mechanisms of LAM Ti6Al4V titanium alloy before and after annealing treatment. The results showed that plastic deformation promoted slip bands to occur inside the α phase and shear bands to generate along the α/β interface. In the as-built sample, cracks initiated in the equiaxed grains and propagated along the columnar grain boundary, showing a mixed fracture mode. However, it transformed into a transgranular fracture after annealing treatment. The widmanstatten α phase acted as a barrier for slip movement and improved the crack resistance of grain boundaries.

源语言	英语
文章编号	3973
期刊	Materials
卷	16
期	11
DOI	https://doi.org/10.3390/ma16113973
出版状态	已出版 - 6月 2023

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10.3390/ma16113973

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title = "In Situ Tensile Observation of the Effect of Annealing on Fracture Behavior of Laser Additive Manufactured Titanium Alloy",

abstract = "The use safety of laser additive manufactured (LAM) titanium alloys is closely related to each one{\textquoteright}s fracture failure mode. In this study, in situ tensile tests were carried out to study the deformation and fracture mechanisms of LAM Ti6Al4V titanium alloy before and after annealing treatment. The results showed that plastic deformation promoted slip bands to occur inside the α phase and shear bands to generate along the α/β interface. In the as-built sample, cracks initiated in the equiaxed grains and propagated along the columnar grain boundary, showing a mixed fracture mode. However, it transformed into a transgranular fracture after annealing treatment. The widmanstatten α phase acted as a barrier for slip movement and improved the crack resistance of grain boundaries.",

keywords = "additive manufacturing, annealing, fracture mechanism, in situ tensile, titanium alloys",

author = "Ming Xu and Huaixue Li and Qi Liu and Feihu Shan and Yongxin Zhang and Wei Guo and Fei Li and Hongqiang Zhang",

note = "Publisher Copyright: {\textcopyright} 2023 by the authors.",

year = "2023",

month = jun,

doi = "10.3390/ma16113973",

language = "英语",

volume = "16",

journal = "Materials",

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T1 - In Situ Tensile Observation of the Effect of Annealing on Fracture Behavior of Laser Additive Manufactured Titanium Alloy

AU - Xu, Ming

AU - Li, Huaixue

AU - Liu, Qi

AU - Shan, Feihu

AU - Zhang, Yongxin

AU - Guo, Wei

AU - Li, Fei

AU - Zhang, Hongqiang

PY - 2023/6

Y1 - 2023/6

N2 - The use safety of laser additive manufactured (LAM) titanium alloys is closely related to each one’s fracture failure mode. In this study, in situ tensile tests were carried out to study the deformation and fracture mechanisms of LAM Ti6Al4V titanium alloy before and after annealing treatment. The results showed that plastic deformation promoted slip bands to occur inside the α phase and shear bands to generate along the α/β interface. In the as-built sample, cracks initiated in the equiaxed grains and propagated along the columnar grain boundary, showing a mixed fracture mode. However, it transformed into a transgranular fracture after annealing treatment. The widmanstatten α phase acted as a barrier for slip movement and improved the crack resistance of grain boundaries.

AB - The use safety of laser additive manufactured (LAM) titanium alloys is closely related to each one’s fracture failure mode. In this study, in situ tensile tests were carried out to study the deformation and fracture mechanisms of LAM Ti6Al4V titanium alloy before and after annealing treatment. The results showed that plastic deformation promoted slip bands to occur inside the α phase and shear bands to generate along the α/β interface. In the as-built sample, cracks initiated in the equiaxed grains and propagated along the columnar grain boundary, showing a mixed fracture mode. However, it transformed into a transgranular fracture after annealing treatment. The widmanstatten α phase acted as a barrier for slip movement and improved the crack resistance of grain boundaries.

KW - additive manufacturing

KW - annealing

KW - fracture mechanism

KW - in situ tensile

KW - titanium alloys

UR - https://www.scopus.com/pages/publications/85161589798

U2 - 10.3390/ma16113973

DO - 10.3390/ma16113973

M3 - 文章

AN - SCOPUS:85161589798

SN - 1996-1944

VL - 16

JO - Materials

JF - Materials

IS - 11

M1 - 3973

ER -

In Situ Tensile Observation of the Effect of Annealing on Fracture Behavior of Laser Additive Manufactured Titanium Alloy

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