کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1446913 | 988628 | 2011 | 11 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: On the origin of dynamic strain aging in twinning-induced plasticity steels On the origin of dynamic strain aging in twinning-induced plasticity steels](/preview/png/1446913.png)
Room temperature dynamic strain aging (DSA) is often observed from the beginning of plastic deformation in high Mn Fe–18% Mn–0.6% C and Fe–22% Mn–0.6% C twinning-induced plasticitysteels. Although the phenomenon is in many cases very pronounced, there have up to now been no attempts to explain the phenomenon of room temperature DSA in TWIP steel containing solute C. It is proposed that DSA occurs by a single diffusive jump of the C atom of the point defect complex in the stacking fault region. DSA is only observed when the C atom reorientation time is smaller than the residence time of the stacking fault at the location of the point defect complex. The latter interaction can explain the DSA-suppressing effect of Al, which increases the stacking fault energy.
Journal: Acta Materialia - Volume 59, Issue 17, October 2011, Pages 6809–6819