کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1580450 | 1514846 | 2009 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Dynamic strain aging effects on low-cycle fatigue of AISI 430F Dynamic strain aging effects on low-cycle fatigue of AISI 430F](/preview/png/1580450.png)
The effects of dynamic strain aging (DSA) on the cyclic mechanical behavior were investigated in a ferritic steel type AISI 430F. Strain-rate changes performed during cyclic tests show a negative strain-rate dependence of the flow stress for temperatures ranging from 200 °C to 450 °C. Low-cycle fatigue curves exhibit prominent cyclic hardening at 400 °C and 450 °C. The influence of the embrittlement phenomena on the hardening of this ferritic steel was also investigated by performing aging treatments at 400 °C and 450 °C in the alloy. These results suggest that a DSA mechanism is operative in this material in a temperature range between 300 °C and 400 °C. Stress relaxation experimental results are also discussed in terms of dynamic strain aging.
Journal: Materials Science and Engineering: A - Volumes 513–514, 15 July 2009, Pages 1–7