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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) >Parameters Influencing the Bake Hardenability of Microalloyed ULC Steels
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Parameters Influencing the Bake Hardenability of Microalloyed ULC Steels

机译：影响微合金ULC钢烘烤硬化性的参数

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摘要

Ti-V and Ti-Nb bake hardenable Ultra Low Carbon (ULC) steels are used to produce hot dip zinc coated steels for automotive applications. An important factor influencing the bake hardenability in such microalloyed ULC steels is the level of solute carbon available to diffuse for pinning dislocations during baking. The level of solute carbon must be controlled carefully during annealing of the steel in the ferritic region. Therefore, this paper summarizes highlights of research conducted to study the effects of chemical composition and annealing temperature (in the ferrite region) on the precipitation (or dissolution) of NbC and VC using a variety of Ti-Nb and Ti-V ULC steels. Carbon diffusivity is another factor that could also influence the bake hardenability through controlling the aging and baking kinetics. Therefore, the paper presents highlights of internal friction measurements performed to assess effects of microalloying elements (Nb,V) and some commonly used solid solution strengthening elements (Mn, P) on carbon diffusivity measured using the internal friction technique.
机译：Ti-V和Ti-Nb可烘烤硬化的超低碳（ULC）钢用于生产用于汽车应用的热浸镀锌钢。影响此类微合金ULC钢的烘烤淬透性的重要因素是可扩散的固溶碳水平，以在烘烤过程中钉扎位错。在铁素体区进行钢退火期间，必须小心控制溶质碳的含量。因此，本文总结了研究的重点，以研究使用多种Ti-Nb和Ti-V ULC钢的化学成分和退火温度（在铁素体区域）对NbC和VC的析出（或溶解）的影响。碳扩散系数是另一个可能通过控制时效和烘烤动力学而影响烘烤硬化性的因素。因此，本文介绍了内部摩擦测量的重点，以评估微合金元素（Nb，V）和一些常用的固溶强化元素（Mn，P）对使用内部摩擦技术测量的碳扩散率的影响。

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