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首页> 外文期刊>Journal of Iron and Steel Research International >Austempering of Hot Rolled Si-Mn TRIP Steels
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Austempering of Hot Rolled Si-Mn TRIP Steels

机译：Si-Mn TRIP热轧钢的奥氏体回火

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摘要

The austempering after hot rolling in hot rolled Si-Mn TRIP (transformation-induced plasticity) steels was investigated. The mechanism of TRIP was discussed through examination of the microstructure and the mechanical properties of this kind of steel. The results showed that the strain-induced transformation to martensite of retained austenite occurs in hot rolled Si-Mn TRIP steels. The sample exhibited a good combination of ultimate tensile strength and total elongation when it was held at the bainite transformation temperature after hot deformation. The stability of retained austenite increases with an increase in isothermal holding time, and a further increase in the holding duration resulted in the decrease of stability. The mechanical properties were optimal when holding for 25 min, and tensile strength and total elongation reached the maximum values (774 MPa and 33%, respectively).
机译：研究了热轧Si-Mn TRIP（相变诱发塑性）钢在热轧后的奥氏体回火。通过检查这种钢的组织和力学性能，讨论了TRIP的机理。结果表明，在热轧Si-Mn TRIP钢中发生了应变诱导的残余奥氏体向马氏体的转变。当样品在热变形后保持在贝氏体转变温度下时，其表现出极限抗拉强度和总伸长率的良好组合。残余奥氏体的稳定性随着等温保持时间的增加而增加，并且保持时间的进一步增加导致稳定性降低。保持25分钟后，机械性能最佳，拉伸强度和总伸长率达到最大值（分别为774 MPa和33％）。

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