|About this Abstract
||2010 TMS Annual Meeting & Exhibition
||Processing Materials for Properties
||Research on Microstructure and Mechanical Properties of Low Alloy Cast Steel with High Strength/Low Yield Ratio by TMCP Technology
||Chi Yu, Haitao Zhou
|On-Site Speaker (Planned)
The microstructure of an acicular ferrite/bainite dual-phase steel with high strength/low yield ratio was investigated by TMCP technology, with its mechanical properties tested. The results indicate that bainite can be formed in a wide range of cooling rates from 2℃ /s to 25 ℃ /s. The different microstructures are obtained under two kinds of cooling rate of as rolled steel, and bainite ferrite microstructure by accelerated cooling has higher strength than granular bainite microstructure after air cooling. Meanwhile, the yield strength of the steel can be up to 635 MPa through TMCP, the ratio of tensile strength to yield strength is 0.78, and the ferrite is benefit to improve the mechanical properties of low carbon microalloyed steel.
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