Wang Yinghu. As-cast Microstructure and Mechanical Properties of Fe-12Mn-8.5Al-0.8C Low Density Steel[J]. IRON STEEL VANADIUM TITANIUM, 2020, 41(2): 169-174. doi: 10.7513/j.issn.1004-7638.2020.02.030
Citation:
Wang Yinghu. As-cast Microstructure and Mechanical Properties of Fe-12Mn-8.5Al-0.8C Low Density Steel[J]. IRON STEEL VANADIUM TITANIUM, 2020, 41(2): 169-174. doi: 10.7513/j.issn.1004-7638.2020.02.030
Wang Yinghu. As-cast Microstructure and Mechanical Properties of Fe-12Mn-8.5Al-0.8C Low Density Steel[J]. IRON STEEL VANADIUM TITANIUM, 2020, 41(2): 169-174. doi: 10.7513/j.issn.1004-7638.2020.02.030
Citation:
Wang Yinghu. As-cast Microstructure and Mechanical Properties of Fe-12Mn-8.5Al-0.8C Low Density Steel[J]. IRON STEEL VANADIUM TITANIUM, 2020, 41(2): 169-174. doi: 10.7513/j.issn.1004-7638.2020.02.030
The as-cast structure and mechanical properties of Fe-12 Mn-8.5 Al-0.8 C low density steel were studied by means of optical microscopy（OM）,scanning electron microscopy（SEM）,energy dispersive spectrometer（EDS）,X-ray diffraction（XRD）.The results show that the as-cast structure is mainly composed of ferrite,austenite and κ-carbide.A small amount of massive κ-carbide precipitates along the grain boundaries of austenite and ferrite.Dendrite segregation can affect the mechanical properties of Fe-12 Mn-8.5 Al-0.8 C low density steel.The tensile strength,yield strength,elongation after fracture and impact toughness of the steel are 522 MPa,506 MPa,13% and 6.85 J,respectively.The density of Fe-12 Mn-8.5 Al-0.8 C steel is 7.0 g/cm3,which is 10% weight lighter than common cast steels.
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