Research on Substitution of Molybdenum by Manganese in Low Alloyed Bainite Ductile Iron

De Qiang Wei; Ke Liu

doi:10.4028/www.scientific.net/AMR.299-300.57

Paper Titles

Study on Distribution of TiC Particles in Molten Steel under Electromagnetic Stirring Condition
p.38

Characterization and Analysis of Ethylene-Propylene Copolymers
p.43

Negative Thermal Expansion of Gd₂Fe_16.5Cr_0.5 Compound with Th₂Ni₁₇-Type Structure
p.47

Local Stress-Strain Method for the Effects of Scratch on Fatigue Performances of Cabin Glass
p.51

Research on Substitution of Molybdenum by Manganese in Low Alloyed Bainite Ductile Iron
p.57

Effect of Minor Compressive Deformation in Austenite on Martensitic Transformation in Modified 9-12%Cr Ferritic Steel
p.61

The Investigation on the Non-Contact Treatment of the Metal Surface Layer by Using Strong Pulse Electromagnetic Field
p.65

The Phase-Field Simulation of the Grain Growth under External Field
p.69

Advanced Stab Resistance Fabrics Utilizing Shear Thickening Fluids
p.73

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Research on Substitution of Molybdenum by Manganese in Low Alloyed Bainite Ductile Iron

Abstract:

The low alloyed bainite ductile iron is obtained by alloying and austempering in room-temperature machine oil. The microstructure is investigated. The mechanical properties are discussed. In general, the number of white-bright zones and segregation is increasing with the increasing in the content of Mn, but the impact toughness is decreased. Therefore, the content of Mn is no more than 0.5 wt.%. The microstructure of bainite, martensite and a little retained austenite in the matrix of the ductile iron was investigated by scanning electron microscope (SEM). The hardness and impact toughness of the ductile iron subjected to heat-treatment are 54~56 HRC and 14.2 J/cm², respectively. The substitution of 0.3~0.5wt.% Mo by 0.7~1.0 wt.% Mn can be realized in the bainite ductile iron.