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首页> 外文会议>International Conference on Microalloying for New Steel Processes and Applications; 20050907-09; Basque Country(ES) >Development of High Performance Nb-Added Hot Rolled Bainitic Steels Presenting a TRIP effect
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Development of High Performance Nb-Added Hot Rolled Bainitic Steels Presenting a TRIP effect

机译：具有TRIP效果的高性能添加铌的热轧贝氏体钢的开发

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The current main challenge of the automotive industry is to reduce the fuel consumption of vehicles by increasing the efficiency of their structural parts. It requires the development of new steels that combine the necessary ductility for the forming operations and high strength levels. This unique combination of properties depends on specific microstructures and particular strengthening mechanisms like the TRIP effect. This study deals with the influence of the hot rolling parameters on the microstructure and mechanical properties of 0.4C-1.5Mn-1.5Si steels with or without Nb microaddition. Deformation under the T_(nr) temperature leads to a refinement of the microstructure consisting of retained austenite and bainite and to an enhancement of the mechanical properties. Furthermore, the deformation leads to a larger amount of retained austenite and to intragranularly nucleated bainitic ferrite. The effects of the Nb addition and of the deformation temperature are demonstrated.
机译：汽车工业当前的主要挑战是通过提高汽车结构部件的效率来减少汽车的燃油消耗。它需要开发新的钢，这些钢结合了成型操作所需的延展性和高强度水平。这种独特的性能组合取决于特定的微结构和特定的强化机制（如TRIP效应）。这项研究处理了热轧参数对有或没有微量添加Nb的0.4C-1.5Mn-1.5Si钢的组织和力学性能的影响。在T_（nr）温度下的变形导致由残余奥氏体和贝氏体组成的微结构的细化，并导致机械性能的增强。此外，变形导致大量残留的奥氏体和晶内成核的贝氏体铁素体。证明了添加铌和变形温度的影响。

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