Université de Rouen, Groupe de Physique des Matériaux, Institut des Matériaux de Rouen, France.
J Microsc. 2011 Dec;244(3):305-10. doi: 10.1111/j.1365-2818.2011.03537.x.
A medium carbon martensitic steel containing nanometer scale secondary hardening carbides and intermetallic particles is investigated by field ion microscopy and atom probe tomography. The interaction between the concomitant precipitations of both types of particles is investigated. It is shown that the presence of the intermetallic phase affects the nucleation mechanism and the spatial distribution of the secondary hardening carbides, which shifts from heterogeneous on dislocations to heterogeneous on the intermetallic particles.
采用场离子显微镜和原子探针层析技术研究了一种含有纳米级次生硬化碳化物和金属间化合物颗粒的中碳马氏体钢。研究了这两种类型颗粒的共沉淀之间的相互作用。结果表明,金属间相的存在影响了次生硬化碳化物的形核机制和空间分布,使其从位错上的不均匀形核转变为金属间颗粒上的不均匀形核。