Improvement in the oxidation resistance of Nb-Si based alloy by selective laser melting

Yueling Guo; Lina Jia; Bin Kong; Fengxiang Zhang; Jinhui Liu; Hu Zhang

doi:10.1016/j.corsci.2017.08.022

Improvement in the oxidation resistance of Nb-Si based alloy by selective laser melting

Yueling Guo, Lina Jia^*, Bin Kong, Fengxiang Zhang, Jinhui Liu, Hu Zhang

^*Corresponding author for this work

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

59 Citations (Scopus)

Abstract

Nb-18Si-24Ti-2Cr-2Al-2Hf (at.%) alloy was fabricated by selective laser melting (SLM). Results showed that an ultra-fined microstructure was achieved by SLM. After oxidation at 1250 °C for 50 h, the weight gains of Nb-Si based alloys via SLM and vacuum induction melting (VIM) were 96.48 mg/cm² and 198.91 mg/cm², respectively. Compared with the VIM alloy, the SLM alloy exhibited a slower oxidation kinetic rate, featured by the formation of a more compact oxide scale without spallation. The improvement in the oxidation resistance was attributed to the microstructure refinement.

Original language	English
Pages (from-to)	260-269
Number of pages	10
Journal	Corrosion Science
Volume	127
DOIs	https://doi.org/10.1016/j.corsci.2017.08.022
Publication status	Published - Oct 2017
Externally published	Yes

Keywords

Intermetallics
Nb-Si alloy
Oxidation
Rapid solidification
Selective laser melting

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10.1016/j.corsci.2017.08.022

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title = "Improvement in the oxidation resistance of Nb-Si based alloy by selective laser melting",

abstract = "Nb-18Si-24Ti-2Cr-2Al-2Hf (at.%) alloy was fabricated by selective laser melting (SLM). Results showed that an ultra-fined microstructure was achieved by SLM. After oxidation at 1250 °C for 50 h, the weight gains of Nb-Si based alloys via SLM and vacuum induction melting (VIM) were 96.48 mg/cm2 and 198.91 mg/cm2, respectively. Compared with the VIM alloy, the SLM alloy exhibited a slower oxidation kinetic rate, featured by the formation of a more compact oxide scale without spallation. The improvement in the oxidation resistance was attributed to the microstructure refinement.",

keywords = "Intermetallics, Nb-Si alloy, Oxidation, Rapid solidification, Selective laser melting",

author = "Yueling Guo and Lina Jia and Bin Kong and Fengxiang Zhang and Jinhui Liu and Hu Zhang",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier Ltd",

year = "2017",

month = oct,

doi = "10.1016/j.corsci.2017.08.022",

language = "English",

volume = "127",

pages = "260--269",

journal = "Corrosion Science",

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T1 - Improvement in the oxidation resistance of Nb-Si based alloy by selective laser melting

AU - Guo, Yueling

AU - Jia, Lina

AU - Kong, Bin

AU - Zhang, Fengxiang

AU - Liu, Jinhui

AU - Zhang, Hu

PY - 2017/10

Y1 - 2017/10

N2 - Nb-18Si-24Ti-2Cr-2Al-2Hf (at.%) alloy was fabricated by selective laser melting (SLM). Results showed that an ultra-fined microstructure was achieved by SLM. After oxidation at 1250 °C for 50 h, the weight gains of Nb-Si based alloys via SLM and vacuum induction melting (VIM) were 96.48 mg/cm2 and 198.91 mg/cm2, respectively. Compared with the VIM alloy, the SLM alloy exhibited a slower oxidation kinetic rate, featured by the formation of a more compact oxide scale without spallation. The improvement in the oxidation resistance was attributed to the microstructure refinement.

AB - Nb-18Si-24Ti-2Cr-2Al-2Hf (at.%) alloy was fabricated by selective laser melting (SLM). Results showed that an ultra-fined microstructure was achieved by SLM. After oxidation at 1250 °C for 50 h, the weight gains of Nb-Si based alloys via SLM and vacuum induction melting (VIM) were 96.48 mg/cm2 and 198.91 mg/cm2, respectively. Compared with the VIM alloy, the SLM alloy exhibited a slower oxidation kinetic rate, featured by the formation of a more compact oxide scale without spallation. The improvement in the oxidation resistance was attributed to the microstructure refinement.

KW - Intermetallics

KW - Nb-Si alloy

KW - Oxidation

KW - Rapid solidification

KW - Selective laser melting

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U2 - 10.1016/j.corsci.2017.08.022

DO - 10.1016/j.corsci.2017.08.022

M3 - Article

AN - SCOPUS:85028575489

SN - 0010-938X

VL - 127

SP - 260

EP - 269

JO - Corrosion Science

JF - Corrosion Science

ER -

Improvement in the oxidation resistance of Nb-Si based alloy by selective laser melting

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Keywords

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