TY - JOUR
T1 - Microstructure, Phases Transformation and Hardness of Sintered Fe-Mo-Si Alloys Prepared by Powder Metallurgy Technique
AU - Cis, Wandi
AU - Riastuti, Rini
AU - Wismogroho, Agus Sukarto
AU - Hermanto, Bambang
AU - Sudiro, Toto
N1 - Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
PY - 2019/11/12
Y1 - 2019/11/12
N2 - The transition-metal silicides are attractive materials for high-temperature applications due to its mechanical properties and resistance to oxidation-corrosion at high temperature. In this paper, the development of silicides alloy based on ferromolybdenum (Fe-Mo) and ferrosilicon (Fe-Si) lumps as starting materials were discussed. The Fe-Mo and Fe-Si lumps were manually crushed into small granules. Afterwards, the small granule of Fe-Mo and Fe-Si were separately milled into fine powder and were then mixed by using Wet-High Energy Milling technique for 4h and 2h, respectively. The powders were compacted and then sintered at 1200°C for 2h in a vacuum. The microstructure of sintered alloys was observed by using SEM-EDX. Meanwhile, the formation of silicides phases was identified by using XRD. The Vickers hardness testing was performed to measure the hardness of sintered alloys. According to the results, the MoSi2 phase was detected in the (Fe-Si)-30(Fe-Mo) alloy. When the Fe-Si concentration was decreased to 40 % at, the FeMoSi phase was formed. The detail results of this study are presented and discussed in this paper.
AB - The transition-metal silicides are attractive materials for high-temperature applications due to its mechanical properties and resistance to oxidation-corrosion at high temperature. In this paper, the development of silicides alloy based on ferromolybdenum (Fe-Mo) and ferrosilicon (Fe-Si) lumps as starting materials were discussed. The Fe-Mo and Fe-Si lumps were manually crushed into small granules. Afterwards, the small granule of Fe-Mo and Fe-Si were separately milled into fine powder and were then mixed by using Wet-High Energy Milling technique for 4h and 2h, respectively. The powders were compacted and then sintered at 1200°C for 2h in a vacuum. The microstructure of sintered alloys was observed by using SEM-EDX. Meanwhile, the formation of silicides phases was identified by using XRD. The Vickers hardness testing was performed to measure the hardness of sintered alloys. According to the results, the MoSi2 phase was detected in the (Fe-Si)-30(Fe-Mo) alloy. When the Fe-Si concentration was decreased to 40 % at, the FeMoSi phase was formed. The detail results of this study are presented and discussed in this paper.
KW - Fe-mo-si alloys
KW - Hardness
KW - Microstructure
KW - Powder metallurgy
KW - Sintering
UR - http://www.scopus.com/inward/record.url?scp=85076088771&partnerID=8YFLogxK
U2 - 10.1088/1757-899X/553/1/012023
DO - 10.1088/1757-899X/553/1/012023
M3 - Conference article
AN - SCOPUS:85076088771
SN - 1757-8981
VL - 553
JO - IOP Conference Series: Materials Science and Engineering
JF - IOP Conference Series: Materials Science and Engineering
IS - 1
M1 - 012023
T2 - 19th International Union of Materials Research Societies - International Conference in Asia, IUMRS-ICA 2018
Y2 - 30 October 2018 through 2 November 2018
ER -