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Effects of Microwave Sintering on Properties and Microstructure of Ferromanganese Alloy Powders

Lei L., Libo Z., Linqing D., Hongbo Z., Guo C., Jinhui P., Qin G.

Archives of Metallurgy and Materials

2018

Vol. 63, iss. 2

547--553

Microwave sintering process was employed to agglomerate ferromanganese alloy powders. The effects of sintering temperature, holding time and particle size composition on the properties and microstructure of sintering products were investigated. The results was shown that increasing sintering temperature or holding time appropriately is beneficial to increase the compressive strength and volume density. SEM and EDAX analysis shows that the liquid phase formed below the melting point in the sintering process, which leads to densification. XRD patterns indicate that the main reaction during microwave sintering is the decarbonization and carburization of iron carbide phase. The experiment demonstrate that the optimum microwave sintering process condition is 1150°C, 10 min and 50% content of the powders with the size of –75 μm.

Effect processing variables on mechanical properties of sintered manganese steels Fe-3%Mn-0.8%C.

Sułowski M., Ciaś A.

Inżynieria Materiałowa

1998

R. XIX, nr 4

1179-1182

The powder metallurgy route may allow sintered manganese steels to be made based on pure iron powder and ferromanganese powder with control over alloy microstructure. The factors that contribute to the mechanical properties of sintered Fe-3%Mn-0,8%C manganese steel, such as the sintering atmosphere, dew point, sintering temperature, cooling rate are summarized. The paper shows the influence of these parameters on the tensile strength, yield strength, transverse rupture strength, impact strength and hardness. It showed that tensile high strength level higher then those of many present sintered steels can be obtained already in the as-sintered condition.