κΉμλ
2017-11-16T01:10:07Z
2017-11-16T01:10:07Z
2016-01
METALS AND MATERIALS INTERNATIONAL, v. 22, NO 1, Page. 81-86
1598-9623
2005-4149
https://link.springer.com/article/10.1007%2Fs12540-015-5497-0
http://hdl.handle.net/20.500.11754/31440
In general, size, shape and dispersion of phases in alloys significantly affect mechanical properties. In this study, the mechanical properties of Mo-Si-B alloys were experimentally investigated with regards to the refinement of intermetallic compound. To confirm the size effect of the intermetallic compound phases on mechanical properties, two differently sized intermetallic compound powders consisting Mo5SiB2 and Mo3Si were fabricated by mechano-chemical process and high-energy ball milling. A modified powder metallurgy method was used with core-shell intermetallic powders where the intermetallic compound particles were the core and nano-sized Mo particles which formed by the hydrogen reduction of Mo oxide were the shells, leading to the microstructures with uniformly distributed intermetallic compound phases within a continuous alpha-Mo matrix phase. Vickers hardness and fracture toughness were measured to examine the mechanical properties of sintered bodies. Vickers hardness was 472 Hv for the fine intermetallic compound powder and 415 Hy for the coarse intermetallic compound powder. The fracture toughness was 12.4 MPa.root m for the fine IMC powders and 13.5 MPa.root m for the coarse intermetallic compound powder.
This work was supported by a research fund from the Agency for Defense Development (ADD) (project No.211155-911059011). This work was supported by the Human Resources Program in Energy Technology of the Korea Institute of Energy Technology Evaluation and Planning (KEMP), granted financial resource from the Ministry of Trade, Industry & Energy, Republic of Korea (No.20154030200900).
en
KOREAN INST METALS MATERIALS
Mo-Si-B alloys
intermetallics
powder processing
mechanical properties
scanning electron microscopy (SEM)
Structural Size Effects of Intermetallic Compounds on the Mechanical Properties of Mo-Si-B Alloy: An Experimental Investigation
Article
1
22
10.1007/s12540-015-5497-0
81-86
METALS AND MATERIALS INTERNATIONAL
Byun, Jong Min
Bang, Su-Ryong
Park, Chun Woong
Suk, Myung-Jin
Kim, Young Do
2016001707
S
COLLEGE OF ENGINEERING[S]
DIVISION OF MATERIALS SCIENCE AND ENGINEERING
ydkim1