The mechanical properties and microstructure of two low carbon high manganese steels with 23.8% （No. 1） and 33% （No. 2） （mass percent） of manganese were investigated. The results showed that No. 1 steel possesse...The mechanical properties and microstructure of two low carbon high manganese steels with 23.8% （No. 1） and 33% （No. 2） （mass percent） of manganese were investigated. The results showed that No. 1 steel possesses high strength and high plasticity, and No. 2 steel has a relatively high strength and extraordinary plasticity. The No. 1 steel exhibits both TRIP （transformation induced plasticity） and TWIP （twin induced plasticity） effects during the deformation; while only TWIP effect appeared under the same deformation condition for No. 2 steel. The comparison between the microstructures and mechanical properties of two steels was made, and the strengthening mechanisms were also analyzed.展开更多
Reasons for substution of Al and/or Si by P in TRIP steel were described.The details in thermodynamic and kinetic analyses and model parametre for the estimation,as well as the calculation results were listed.Low temp...Reasons for substution of Al and/or Si by P in TRIP steel were described.The details in thermodynamic and kinetic analyses and model parametre for the estimation,as well as the calculation results were listed.Low temperature tests were also shown to support the calculation result.Strengthening mechanism for different composition high Mn steels was discussed based on the optical micrograph,XRD,TEM and SEM measurements.It was therefore realized stack fault and its effect in phase transformation in high Mn steel was in the dependence of composition,strain and heat treatment.展开更多
文摘The mechanical properties and microstructure of two low carbon high manganese steels with 23.8% （No. 1） and 33% （No. 2） （mass percent） of manganese were investigated. The results showed that No. 1 steel possesses high strength and high plasticity, and No. 2 steel has a relatively high strength and extraordinary plasticity. The No. 1 steel exhibits both TRIP （transformation induced plasticity） and TWIP （twin induced plasticity） effects during the deformation; while only TWIP effect appeared under the same deformation condition for No. 2 steel. The comparison between the microstructures and mechanical properties of two steels was made, and the strengthening mechanisms were also analyzed.
文摘Reasons for substution of Al and/or Si by P in TRIP steel were described.The details in thermodynamic and kinetic analyses and model parametre for the estimation,as well as the calculation results were listed.Low temperature tests were also shown to support the calculation result.Strengthening mechanism for different composition high Mn steels was discussed based on the optical micrograph,XRD,TEM and SEM measurements.It was therefore realized stack fault and its effect in phase transformation in high Mn steel was in the dependence of composition,strain and heat treatment.
