|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Characterization of Minerals, Metals, and Materials
||Contribution of Phosphorus Addition to Strength after Intercritical Hot-rolling in HSLA Steels
||Yan Li, Wei Ding, Zengwu Zhao
|On-Site Speaker (Planned)
Effect of phosphorus on intercritical region, microstructure and strength contribution was analyzed by thermodilatometry, optical microscopy, tensile and nanohardness test. The results show that the HSLA steels contain ferrite, bainite and pearlite phase after intercritical hot rolling. The ferrite volume fraction increases caused by increasing Ac3 temperature depending on phosphorus addition. The ultimate tensile strength is higher when the steel contains a big volume fraction of ferrite phase in the steel containing 0.09 mass% phosphorus. The tensile strength is increased due to the contribution of ferrite phase, comparing with bainite phase.
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