ABSTRACT

Alloy development on a commercial scale in recent years has become much more costly and as such has adopted a more iterative approach, making small refinements while keeping within known limits. Laboratory-based rapid alloy development is therefore a key in pushing new grade boundaries. This work shows the rapid alloy development (RAP) facilities at WMG, including capability, sizes and time required for each stage of the process, which have been mapped against the relevant industrial process. A case study of a dual-phase steel grade DP800 has been used for this work. It has been shown that through knowledge of the strengthening mechanism of the alloy (2nd phase distribution for DP800) is critical with respect to mechanical properties and that specific changes and optimisation to the laboratory production casting and subsequent reduction allows for the final product microstructure and mechanical properties to match the production product. This gives confidence in upscalability.

摘要

近年来，商业规模的合金开发成本越来越高，因此采用了更加迭代的方法，在保持已知限制的同时进行小幅改进。因此，基于实验室的快速合金开发是推动新等级界限的关键。这项工作展示了 WMG 的快速合金开发 (RAP) 设施，包括该过程每个阶段所需的能力、尺寸和时间，已针对相关工业过程进行了映射。本工作使用了双相钢级 DP800 的案例研究。已经表明，通过了解合金的强化机制（DP800 的第二相分布）对机械性能至关重要，实验室生产铸件的特定变化和优化以及随后的还原允许最终产品的微观结构和机械性能性能与生产产品相匹配。这使人们对可升级性充满信心。