The purification of AISI 420 stainless steel in laser solid forming

Menghua Song; Xin Lin; Fenggang Liu; Haiou Yang; Weidong Huang

doi:10.1016/j.matdes.2015.10.096

The purification of AISI 420 stainless steel in laser solid forming

Menghua Song, Xin Lin, Fenggang Liu, Haiou Yang, Weidong Huang

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

15 Scopus citations

Abstract

A series of AISI 420 stainless steel deposits were prepared by laser solid forming under different oxygen partial pressures. The variation of the oxygen concentration of the deposit with the oxygen partial pressure was investigated. It is found that the purification occurs when the oxygen partial pressure is lower than a certain threshold. By considering the transfer of gaseous oxides in gas phases, a novel mechanism was developed to explain the purification. The predicted oxygen adsorption/desorption behavior shows a reasonable consistent with the experiment result. It is indicated that volatile oxides play a significant role in the purification. The decrease of the oxygen partial pressure and increase of the contents of elements forming volatile oxides and the original oxygen in the deposited material all promote the purification.

Original language	English
Pages (from-to)	1035-1040
Number of pages	6
Journal	Materials and Design
Volume	89
DOIs	https://doi.org/10.1016/j.matdes.2015.10.096
State	Published - 5 Jan 2016

Keywords

AISI 420 stainless steel
Laser solid forming
Oxygen partial pressure
Purification
Volatile oxides

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10.1016/j.matdes.2015.10.096

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title = "The purification of AISI 420 stainless steel in laser solid forming",

abstract = "A series of AISI 420 stainless steel deposits were prepared by laser solid forming under different oxygen partial pressures. The variation of the oxygen concentration of the deposit with the oxygen partial pressure was investigated. It is found that the purification occurs when the oxygen partial pressure is lower than a certain threshold. By considering the transfer of gaseous oxides in gas phases, a novel mechanism was developed to explain the purification. The predicted oxygen adsorption/desorption behavior shows a reasonable consistent with the experiment result. It is indicated that volatile oxides play a significant role in the purification. The decrease of the oxygen partial pressure and increase of the contents of elements forming volatile oxides and the original oxygen in the deposited material all promote the purification.",

keywords = "AISI 420 stainless steel, Laser solid forming, Oxygen partial pressure, Purification, Volatile oxides",

author = "Menghua Song and Xin Lin and Fenggang Liu and Haiou Yang and Weidong Huang",

note = "Publisher Copyright: {\textcopyright} 2015 Elsevier Ltd.",

year = "2016",

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doi = "10.1016/j.matdes.2015.10.096",

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T1 - The purification of AISI 420 stainless steel in laser solid forming

AU - Song, Menghua

AU - Lin, Xin

AU - Liu, Fenggang

AU - Yang, Haiou

AU - Huang, Weidong

PY - 2016/1/5

Y1 - 2016/1/5

N2 - A series of AISI 420 stainless steel deposits were prepared by laser solid forming under different oxygen partial pressures. The variation of the oxygen concentration of the deposit with the oxygen partial pressure was investigated. It is found that the purification occurs when the oxygen partial pressure is lower than a certain threshold. By considering the transfer of gaseous oxides in gas phases, a novel mechanism was developed to explain the purification. The predicted oxygen adsorption/desorption behavior shows a reasonable consistent with the experiment result. It is indicated that volatile oxides play a significant role in the purification. The decrease of the oxygen partial pressure and increase of the contents of elements forming volatile oxides and the original oxygen in the deposited material all promote the purification.

AB - A series of AISI 420 stainless steel deposits were prepared by laser solid forming under different oxygen partial pressures. The variation of the oxygen concentration of the deposit with the oxygen partial pressure was investigated. It is found that the purification occurs when the oxygen partial pressure is lower than a certain threshold. By considering the transfer of gaseous oxides in gas phases, a novel mechanism was developed to explain the purification. The predicted oxygen adsorption/desorption behavior shows a reasonable consistent with the experiment result. It is indicated that volatile oxides play a significant role in the purification. The decrease of the oxygen partial pressure and increase of the contents of elements forming volatile oxides and the original oxygen in the deposited material all promote the purification.

KW - AISI 420 stainless steel

KW - Laser solid forming

KW - Oxygen partial pressure

KW - Purification

KW - Volatile oxides

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U2 - 10.1016/j.matdes.2015.10.096

DO - 10.1016/j.matdes.2015.10.096

M3 - 文章

AN - SCOPUS:84947750517

SN - 0264-1275

VL - 89

SP - 1035

EP - 1040

JO - Materials and Design

JF - Materials and Design

ER -

The purification of AISI 420 stainless steel in laser solid forming

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Keywords

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