eprintid: 3011
rev_number: 10
eprint_status: archive
userid: 10
dir: disk0/00/00/30/11
datestamp: 2021-09-10 04:16:07
lastmod: 2021-09-10 04:16:07
status_changed: 2021-09-10 04:16:07
type: article
metadata_visibility: show
creators_name: Chun-Liang Chen, .
creators_name: Sutrisna, .
title: The Effect of Mo and Dispersoids on Microstructure,
Sintering Behavior, and Mechanical Properties of
W-Mo-Ni-Fe-Co Heavy Tungsten Alloys
ispublished: pub
subjects: TJ
keywords: heavy tungsten alloy; mechanical alloying; sintering
abstract: Abstract: 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 γ-Ni(Fe,Co) binder phase were further
synthesized with Y2O3 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 Y2O3 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.
Keywords: heavy tungsten alloy; mechanical alloying; sintering
date: 2019-01-22
date_type: published
publisher: mdpi
official_url: http://www.sttnas.ac.id
contact_email: library@sttnas.ac.id
full_text_status: public
publication: metal
volume: 9
number: 111
article_number: -
pagerange: 1-11
refereed: TRUE
issn: -
referencetext: Lee, K.H.; Cha, S.I.; Ryu, H.J.; Hong, S.H. Effect of two-stage sintering process on microstructure and
mechanical properties of ODS tungsten heavy alloy. Mater. Sci. Eng. A 2007, 458, 323–329.
Metals 2019, 9, 111 11 of 11
2. Arora, A.; Rao, V.G. Tungsten Heavy Alloy for Defence Applications. Mater. Technol. 2004, 19, 210–215.
3. Lu, P.; German, R.M. Multiple grain growth events in liquid phase sintering. J. Mater. Sci. 2001, 36, 3385–
3394.
4. German, R.M. Sintering Atmosphere Effects on the Ductility Sintering Atmosphere Effects on the Ductility
of W-Ni-Fe Heavy Metals. Metall. Trans. A 2017, 15, 747–754.
5. Ryu, H.J.; Hong, S.H. Effects of sintering conditions on mechanical properties of mechanically alloyed
tungsten heavy alloys. Key Eng. Mater. 2000, 7, 2–7.
6. Ryu, H.J.; Hong, S.H. Fabrication and properties of mechanically alloyed oxide-dispersed tungsten heavy
alloys. Mater. Sci. Eng. A 2003, 363, 179–184.
7. Zhu, Y.B.; Wang, Y.; Zhang, X.Y.; Qin, G.W. W/NiFe phase interfacial characteristics of liquid-phase
sintered W-Ni-Fe alloy. Int. J. Refract. Met. Hard Mater. 2007, 25, 275–279.
8. Chen, C.L.; Huang, C.L.; Zeng, Y. Synthesis of ODS heavy tungsten alloys through post-annealing and
secondary ball milling. Int. J. Refract. Met. Hard Mater. 2015, 48, 359–364.
9. Chen, C.L.; Huang, C.L. Milling media and alloying effects on synthesis and characteristics of
mechanically alloyed ODS heavy tungsten alloys. Int. J. Refract. Met. Hard Mater. 2014, 44, 19–26.
10. Chen, C.L.; Huang, C.L. The effects of alloying and milling on the formation of intermetallics in ODS
tungsten heavy alloys. Intermetallics 2013, 41, 10–15.
11. Chen, C.L.; Ma, S.H. Study on characteristics and sintering behavior of W-Ni-Co tungsten heavy alloy by a
secondary ball milling method. J. Alloys Compd. 2018, 731, 78–83.
12. Chen, C.L.; Ma, S.H. Effects of Ni/Co ratio and mechanical alloying on characteristics and sintering
behavior of W-Ni-Co tungsten heavy alloys. J. Alloys Compd. 2017, 711, 488–494.
13. Bose, A.; German, R.M. Microstructural Refinement of W-Ni-Fe Heavy Alloys by Alloying Additions.
Metall. Trans. A 1988, 19, 3100–3101.
14. Kemp, P.B.; German, R.M. Mechanical Properties of Molybdenum Alloyed Liquid Phase- Sintered
Tungsten-Based Composites. Metall. Trans. A 1995, 26, 2187–2189.
15. Hamid, Z.A.; Moustafa, S.F.; Daoush, W.M.; Mouez, F.A.; Hassan, M. Fabrication and Characterization of
Tungsten Heavy Alloys Using Chemical Reduction and Mechanical Alloying Methods. Open J. Appl. Sci.
2013, 03, 15–27.
16. Zhang, G.; Xiong, W.; Yang, Q.; Yao, Z.; Chen, S.; Chen, X. Effect of Mo addition on microstructure and
mechanical properties of (Ti, W) C solid solution based cermets. Int. J. Refract. Met. Hard Mater. 2014, 43,
77–82.
17. Chen, C.L. Sutrisna Study of W-Co ODS coating on stainless steels by mechanical alloying. Surf. Coat.
Technol. 2018, 350, 954–961.
© 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access
article distributed under the terms and conditions of the Creative Commons Attribution
(CC BY) license (http://creativecommons.org/licenses/by/
citation:   Chun-Liang Chen, . and Sutrisna, .  (2019) The Effect of Mo and Dispersoids on Microstructure, Sintering Behavior, and Mechanical Properties of W-Mo-Ni-Fe-Co Heavy Tungsten Alloys.  metal, 9 (111): -.  pp. 1-11.  ISSN -     
document_url: https://repository.itny.ac.id/id/eprint/3011/1/The%20Effect%20of%20Mo%20and%20Dispersoids%20on%20Microstructure%2CSintering%20Behavior%2C%20and%20Mechanical%20Properties%20%281%29.pdf