2013 journal article

Physics and model of strengthening by parallel stacking faults

APPLIED PHYSICS LETTERS, 103(13).

By: W. Jian n, G. Cheng n, W. Xu n, C. Koch n, Q. Wang*, Y. Zhu  n, S. Mathaudhu n

co-author countries: China πŸ‡¨πŸ‡³ United States of America πŸ‡ΊπŸ‡Έ
Source: Web Of Science
Added: August 6, 2018

We have recently reported that parallel stacking faults (SFs) can tremendously increase the strength of a magnesium alloy. The strengthening is found to increase linearly with the reciprocal of the mean SF spacing, d. In this study we analyze dislocation interactions with SFs, and then propose a physics-based model to explain the observed relationship between yield strength and SFs spacing. Similar to the empirical Hall-Petch relationship for grain size, it is expected that this strengthening mechanism will hold true for a variety of materials engineered with parallel spaced stacking faults over a wide range of fault spacing.