The Effect of Mo and Dispersoids on Microstructure, Sintering Behavior, and Mechanical Properties of W-Mo-Ni-Fe-Co Heavy Tungsten Alloys

The Effect of Mo and Dispersoids on Microstructure, Sintering Behavior, and Mechanical Properties of W-Mo-Ni-Fe-Co Heavy Tungsten Alloys

W-Mo-Ni-Fe-Co heavy tungsten alloys were fabricated by mechanical alloying. The effects of Mo and oxide dipsersoids on the characteristics and properties of the model alloys were investigated. In this study, the W-Mo matrix and &#947;-Ni(Fe,Co) binder phase were further synthesized with Y<sub...

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Main Authors: Chun-Liang Chen, Sutrisna
Format: Article
Language:English
Published: MDPI AG 2019-01-01
Series:Metals
Subjects:
heavy tungsten alloy
mechanical alloying
sintering
Online Access:https://www.mdpi.com/2075-4701/9/2/111
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spelling doaj-4bd3ced284384673a6f28ea06036da0d2020-11-25T02:49:54ZengMDPI AGMetals2075-47012019-01-019211110.3390/met9020111met9020111The Effect of Mo and Dispersoids on Microstructure, Sintering Behavior, and Mechanical Properties of W-Mo-Ni-Fe-Co Heavy Tungsten AlloysChun-Liang Chen0Sutrisna1Department of Materials Science & Engineering, National Dong Hwa University, Shou-Feng, Hualien 97401, TaiwanDepartment of Materials Science & Engineering, National Dong Hwa University, Shou-Feng, Hualien 97401, TaiwanW-Mo-Ni-Fe-Co heavy tungsten alloys were fabricated by mechanical alloying. The effects of Mo and oxide dipsersoids on the characteristics and properties of the model alloys were investigated. In this study, the W-Mo matrix and &#947;-Ni(Fe,Co) binder phase were further synthesized with Y<sub>2</sub>O<sub>3</sub> by a secondary ball milling method. The results suggest that the microstructure and sintering behavior of the model alloys are strongly influenced by the dispersed oxide particles. The model alloys with the Y<sub>2</sub>O<sub>3</sub> addition demonstrate grain refinement and uniform microstructure. The dispersed particles could act as an inhibitor for diffusion of tungsten atoms and grain growth, promoting the formation of solid state during sintering. Consequently, good densification, high hardness, and elastic modulus of alloys can be achieved.https://www.mdpi.com/2075-4701/9/2/111heavy tungsten alloymechanical alloyingsintering
collection DOAJ
language English
format Article
sources DOAJ
author Chun-Liang Chen
Sutrisna
spellingShingle Chun-Liang Chen
Sutrisna
The Effect of Mo and Dispersoids on Microstructure, Sintering Behavior, and Mechanical Properties of W-Mo-Ni-Fe-Co Heavy Tungsten Alloys
Metals
heavy tungsten alloy
mechanical alloying
sintering
author_facet Chun-Liang Chen
Sutrisna
author_sort Chun-Liang Chen
title The Effect of Mo and Dispersoids on Microstructure, Sintering Behavior, and Mechanical Properties of W-Mo-Ni-Fe-Co Heavy Tungsten Alloys
title_short The Effect of Mo and Dispersoids on Microstructure, Sintering Behavior, and Mechanical Properties of W-Mo-Ni-Fe-Co Heavy Tungsten Alloys
title_full The Effect of Mo and Dispersoids on Microstructure, Sintering Behavior, and Mechanical Properties of W-Mo-Ni-Fe-Co Heavy Tungsten Alloys
title_fullStr The Effect of Mo and Dispersoids on Microstructure, Sintering Behavior, and Mechanical Properties of W-Mo-Ni-Fe-Co Heavy Tungsten Alloys
title_full_unstemmed The Effect of Mo and Dispersoids on Microstructure, Sintering Behavior, and Mechanical Properties of W-Mo-Ni-Fe-Co Heavy Tungsten Alloys
title_sort effect of mo and dispersoids on microstructure, sintering behavior, and mechanical properties of w-mo-ni-fe-co heavy tungsten alloys
publisher MDPI AG
series Metals
issn 2075-4701
publishDate 2019-01-01
description W-Mo-Ni-Fe-Co heavy tungsten alloys were fabricated by mechanical alloying. The effects of Mo and oxide dipsersoids on the characteristics and properties of the model alloys were investigated. In this study, the W-Mo matrix and &#947;-Ni(Fe,Co) binder phase were further synthesized with Y<sub>2</sub>O<sub>3</sub> by a secondary ball milling method. The results suggest that the microstructure and sintering behavior of the model alloys are strongly influenced by the dispersed oxide particles. The model alloys with the Y<sub>2</sub>O<sub>3</sub> addition demonstrate grain refinement and uniform microstructure. The dispersed particles could act as an inhibitor for diffusion of tungsten atoms and grain growth, promoting the formation of solid state during sintering. Consequently, good densification, high hardness, and elastic modulus of alloys can be achieved.
topic heavy tungsten alloy
mechanical alloying
sintering
url https://www.mdpi.com/2075-4701/9/2/111
work_keys_str_mv AT chunliangchen theeffectofmoanddispersoidsonmicrostructuresinteringbehaviorandmechanicalpropertiesofwmonifecoheavytungstenalloys
AT sutrisna theeffectofmoanddispersoidsonmicrostructuresinteringbehaviorandmechanicalpropertiesofwmonifecoheavytungstenalloys
AT chunliangchen effectofmoanddispersoidsonmicrostructuresinteringbehaviorandmechanicalpropertiesofwmonifecoheavytungstenalloys
AT sutrisna effectofmoanddispersoidsonmicrostructuresinteringbehaviorandmechanicalpropertiesofwmonifecoheavytungstenalloys
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