کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1449783 | 988714 | 2007 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Stress-induced martensitic phase transformation in thin sheets of Nitinol Stress-induced martensitic phase transformation in thin sheets of Nitinol](/preview/png/1449783.png)
Using the in situ optical technique known as digital image correlation (DIC), full-field quantitative strain maps of localization have been experimentally obtained for the first time in thin sheets of Nitinol. The use of DIC provides new information connecting previous observations on the micro- and macro-scales. It shows that the transformation initiates before the formation of localized bands, and the strain inside the bands does not saturate when they nucleate. The effect of rolling texture on the macroscopic stress–strain behavior was observed and it is shown that the resolved stress criterion or Clausius–Clapeyron relation does not hold for polycrystalline Nitinol. Finally, the effect of geometric defects on localization behavior was observed.
Journal: Acta Materialia - Volume 55, Issue 10, June 2007, Pages 3593–3600