کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1580658 | 1514843 | 2009 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The relationship between cyclic stress-strain curve and dislocation structures in cyclically deformed IF steel
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: The relationship between cyclic stress-strain curve and dislocation structures in cyclically deformed IF steel The relationship between cyclic stress-strain curve and dislocation structures in cyclically deformed IF steel](/preview/png/1580658.png)
چکیده انگلیسی
The cyclic stress-strain curve (CSSC) of cyclically deformed polycrystalline interstitial-free steels (IF steel), divided into regions A, B and C, have been correlated with the fatigue test conditions. No dislocation arrangement can be found when plastic strain amplitude is controlled in region A. For region B as revealed as a plateau, the plastic strain amplitude is located in the range between Épl = 7.5 Ã 10â5 (ÎÉ/2 = 0.05%) and Épl = 5 Ã 10â4 (ÎÉ/2 = 0.1%). Loop patches prevail in region B. If the strain amplitude is close to the upper limit of the region B, the loop-patch structure is also predominant in the dislocation structures despite the existence of dislocation walls and a few dislocation cells larger than 2 μm. However, these structures have no significant effect on fatigue failure. The dislocation cells rapidly developed once the plastic strain amplitude is elevated into region C.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 517, Issues 1â2, 20 August 2009, Pages 235-238
Journal: Materials Science and Engineering: A - Volume 517, Issues 1â2, 20 August 2009, Pages 235-238
نویسندگان
Chia-Chang Shih, New-Jin Ho, Hsing-Lu Huang,