Dynamic strain aging (DSA) is the process of solute atoms segregating around dislocations on the timescale of loading. Continuum theories of DSA derived from elasticity theory have been shown to severely overpredict both the timescale and strengthening of DSA. Recently, cross-core theory was developed to reconcile this gap, invoking a special single-atomic-hop diffusion mechanism across the core of an extended dislocation. In this work, we show that the classical continuum theory expression for the rate of solute segregation is in error. After correcting this error, we show that continuum theory predictions match cross-core theory when the elevated diffusivity near the dislocation core is accounted for. Our findings indicate that continuum theory is still a useful tool for studying dislocation-solute interactions.

动态应变时效（DSA）是溶质原子在加载时间尺度上围绕位错偏析的过程。已经证明，从弹性理论得出的DSA连续体理论严重预测了DSA的时间尺度和强度。最近，开发了跨核理论来解决这一差距，并在扩展位错的整个核中调用了特殊的单原子跃迁扩散机制。在这项工作中，我们表明溶质偏析率的经典连续谱理论表达式是错误的。纠正此错误后，我们表明，考虑到位错核心附近扩散率的升高，连续体理论的预测与交叉核心理论相符。我们的发现表明，连续体理论仍然是研究位错-溶质相互作用的有用工具。