论文标题
镍合金inconel 600中的晶界锯齿：定量和机制
Grain Boundary Serration in Nickel Alloy Inconel 600: Quantification and Mechanisms
论文作者
论文摘要
系统地研究了由热处理引起的inconel 600中晶界的锯齿。一种基于傅立叶变换的新方法用于分析锯齿状晶界的多波形特征。设计和利用了一个新的度量标准 - 锯齿指数 - 用于量化锯齿的程度，更普遍地是为了在客观上区分锯齿和非交流边界。通过考虑与处理参数的锯齿指数的变化，阐明了锯齿度与溶液处理/冷却速率之间的因果关系。介绍了锯齿状的处理图。出现了两种不同的形成机制，这些机制依赖于晶界与碳化物的相互作用：（i）齐纳型拖动阻碍了晶界迁移，并且（ii）碳化物的生长诱导的锯齿。
The serration of grain boundaries in Inconel 600 caused by heat treatment is studied systematically. A new method based on Fourier transforms is used to analyse the multiple wave-like character of the serrated grain boundaries. A new metric -- the serration index -- is devised and utilised to quantify the degree of serration and more generally to distinguish objectively between serrated and non-serrated boundaries. By considering the variation of the serration index with processing parameters, a causal relationship between degree of serration and solution treatment/cooling rate is elucidated. Processing maps for the degree of serration are presented. Two distinct formation mechanisms arise which rely upon grain boundary interaction with carbides: (i) Zener-type dragging which hinders grain boundary migration and (ii) a faceted carbide growth-induced serration.
