Tensile property enhancement by oxygen solutes in selectively laser melted titanium materials fabricated from pre-mixed pure Ti and TiO2 powder

Katsuyoshi Kondoh; Eri Ichikawa; Ammarueda Issariyapat; Kazuki Shitara; Junko Umeda; Biao Chen; Shufeng Li

doi:10.1016/j.msea.2020.139983

Tensile property enhancement by oxygen solutes in selectively laser melted titanium materials fabricated from pre-mixed pure Ti and TiO₂ powder

Katsuyoshi Kondoh
, Eri Ichikawa
, Ammarueda Issariyapat
, Kazuki Shitara
, Junko Umeda
, Biao Chen
, Shufeng Li

School of Materials Sience and Engineering

The University of Osaka
Xi'an University of Technology

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

60 Scopus citations

Abstract

Ti-based materials with high oxygen solute contents were fabricated from mixtures of Ti powder and TiO₂ particles by selective laser melting (SLM). Uniformly dissolved oxygen (O) from the TiO₂ particles caused c lattice expansion in α-Ti crystals, which effectively increased the strengths of as-built SLM Ti–O materials. The as-built SLM Ti–O material using 1.5 wt% TiO₂ showed a yield stress of 962 MPa and 15.3% elongation. The yield stress increases calculated by the Hall–Petch equation and Labusch model were equivalent to those observed experimentally, and O solid-solution strengthening was dominant in increasing yield stress.

Original language	English
Article number	139983
Journal	Materials Science and Engineering: A
Volume	795
DOIs	https://doi.org/10.1016/j.msea.2020.139983
State	Published - 23 Sep 2020

Keywords

Additive manufacturing
Interstitial lattice defect
Rapid solidification
Titanium
X-ray diffraction

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10.1016/j.msea.2020.139983

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title = "Tensile property enhancement by oxygen solutes in selectively laser melted titanium materials fabricated from pre-mixed pure Ti and TiO2 powder",

abstract = "Ti-based materials with high oxygen solute contents were fabricated from mixtures of Ti powder and TiO2 particles by selective laser melting (SLM). Uniformly dissolved oxygen (O) from the TiO2 particles caused c lattice expansion in α-Ti crystals, which effectively increased the strengths of as-built SLM Ti–O materials. The as-built SLM Ti–O material using 1.5 wt\% TiO2 showed a yield stress of 962 MPa and 15.3\% elongation. The yield stress increases calculated by the Hall–Petch equation and Labusch model were equivalent to those observed experimentally, and O solid-solution strengthening was dominant in increasing yield stress.",

keywords = "Additive manufacturing, Interstitial lattice defect, Rapid solidification, Titanium, X-ray diffraction",

author = "Katsuyoshi Kondoh and Eri Ichikawa and Ammarueda Issariyapat and Kazuki Shitara and Junko Umeda and Biao Chen and Shufeng Li",

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year = "2020",

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doi = "10.1016/j.msea.2020.139983",

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TY - JOUR

T1 - Tensile property enhancement by oxygen solutes in selectively laser melted titanium materials fabricated from pre-mixed pure Ti and TiO2 powder

AU - Kondoh, Katsuyoshi

AU - Ichikawa, Eri

AU - Issariyapat, Ammarueda

AU - Shitara, Kazuki

AU - Umeda, Junko

AU - Chen, Biao

AU - Li, Shufeng

PY - 2020/9/23

Y1 - 2020/9/23

N2 - Ti-based materials with high oxygen solute contents were fabricated from mixtures of Ti powder and TiO2 particles by selective laser melting (SLM). Uniformly dissolved oxygen (O) from the TiO2 particles caused c lattice expansion in α-Ti crystals, which effectively increased the strengths of as-built SLM Ti–O materials. The as-built SLM Ti–O material using 1.5 wt% TiO2 showed a yield stress of 962 MPa and 15.3% elongation. The yield stress increases calculated by the Hall–Petch equation and Labusch model were equivalent to those observed experimentally, and O solid-solution strengthening was dominant in increasing yield stress.

AB - Ti-based materials with high oxygen solute contents were fabricated from mixtures of Ti powder and TiO2 particles by selective laser melting (SLM). Uniformly dissolved oxygen (O) from the TiO2 particles caused c lattice expansion in α-Ti crystals, which effectively increased the strengths of as-built SLM Ti–O materials. The as-built SLM Ti–O material using 1.5 wt% TiO2 showed a yield stress of 962 MPa and 15.3% elongation. The yield stress increases calculated by the Hall–Petch equation and Labusch model were equivalent to those observed experimentally, and O solid-solution strengthening was dominant in increasing yield stress.

KW - Additive manufacturing

KW - Interstitial lattice defect

KW - Rapid solidification

KW - Titanium

KW - X-ray diffraction

UR - https://www.scopus.com/pages/publications/85088891067

U2 - 10.1016/j.msea.2020.139983

DO - 10.1016/j.msea.2020.139983

M3 - 文章

AN - SCOPUS:85088891067

SN - 0921-5093

VL - 795

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

M1 - 139983

ER -

Tensile property enhancement by oxygen solutes in selectively laser melted titanium materials fabricated from pre-mixed pure Ti and TiO₂ powder

Abstract

Keywords

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