کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1579926 | 1001234 | 2010 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Damage mechanisms of a high-Cr single crystal superalloy during thermomechanical fatigue
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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: Damage mechanisms of a high-Cr single crystal superalloy during thermomechanical fatigue Damage mechanisms of a high-Cr single crystal superalloy during thermomechanical fatigue](/preview/png/1579926.png)
چکیده انگلیسی
The deformation and damage mechanisms arising during thermomechanical fatigue of a high-Cr single crystal superalloy have been investigated and a completely new failure mechanism involving recrystallization and oxidation has been discovered. The primary deformation mechanism is slip along the {1 1 1} planes. The deformation is highly localized to a number of bands, where recrystallization eventually occurs during the thermomechanical fatigue process. When the final failure occurs along these recrystallized bands it is accompanied by the formation of voids due to the presence of grain boundaries. The damage process is further enhanced by oxidation, since recrystallization occurs more easily in the γ′ depleted zone under the oxide layer.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 527, Issue 3, 15 January 2010, Pages 553–558
Journal: Materials Science and Engineering: A - Volume 527, Issue 3, 15 January 2010, Pages 553–558
نویسندگان
Johan J. Moverare, Sten Johansson,