کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5456382 1514661 2017 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of rhenium and ruthenium on the deformation and fracture mechanism in nickel-based model single crystal superalloys during the in-situ tensile at room temperature
ترجمه فارسی عنوان
اثر رنیوم و روتنیم بر مکانیزم تغییر شکل و شکست در مدل کریستال نیکل بر پایه مدل نیکل در طی کشش موضعی در دمای اتاق
کلمات کلیدی
سوپر آلیاژهای تک کریستال مدل مبتنی بر نیکل، آزمایش کششی در محل، شکستگی، تنظیمات جابجایی،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
چکیده انگلیسی
In-situ tensile experiments of Ni-Al, Ni-Al-Re and Ni-Al-Re-Ru model single-crystal superalloys were performed in scanning electron microscope (SEM) at room temperature. The plastic deformation mechanisms of all the three model superalloys were double-oriented slipping of dislocations. Micro-cracks were often formed at the intersection of two sets of slip lines. The fracture surfaces of Ni-Al and Ni-Al-Re-Ru alloys were nearly parallel to (010) planes and that of the Ni-Al-Re alloys was nearly parallel to (1−11) plane. The dislocation configuration was analyzed by transmission electron microscopy (TEM). The a/2<110> dislocation pairs coupled with antiphase boundary (APB) cut into γʹ phase in the Ni-Al and Ni-Al-Re-Ru model superalloys. In addition to these dislocations, stacking faults also cut into γʹ phase in Ni-Al-Re model superalloys. The different fracture surfaces of different model single-crystal superalloys were attributed to the influence of elements Re and Ru on the dislocation configuration.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 682, 13 January 2017, Pages 90-97
نویسندگان
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