High-throughput (A)SAXS investigation of the effect of composition on M23C6 carbide precipitation in stainless steel

Precipitation is a family of phase transformations of major technological importance, notably in the metallurgy of structural alloys. While it is known that nucleus composition and interfacial energy play a critical role in the kinetics of the transformation, their evolution in multi-component systems is still poorly understood. It is proposed here to use a recently developed combinatorial methodology to measure the precipitation kinetics of M23C6 carbides in large ranges of the composition space.

析出（Precipitation）是一类具有重要工程应用价值的相变类型，在结构合金的冶金研究中尤为关键。尽管学界已明确，析出晶核的成分与界面能在相变动力学中发挥核心作用，但多组分体系中二者的演化规律仍未得到充分解析。本文提出采用一种新近开发的组合表征方法，在宽泛的成分空间内测定M23C6碳化物的析出动力学。