کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10384600 | 881552 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Microstructural evolution during scuffing of hardened 4340 steel-implication for scuffing mechanism
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
شیمی کلوئیدی و سطحی
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چکیده انگلیسی
Microstructural changes occurring during scuffing failure in hardened 4340 steel were studied with a block-on-ring test rig using a step-loading test protocol. Tests were interrupted before, during, and after scuffing. Both surface and sub-surface changes in the original tempered microstructure were characterized by scanning electron microscopy. Results of our study showed that scuffing occurred by severe and sudden plastic deformation of near-surface material in a sub-second time frame. Based on this observation and other previously observed microstructural changes, i.e. formation of a large fraction of retained austenite during scuffing, a scuffing mechanism based on adiabatic shear instability is proposed. The proposed scuffing mechanism can effectively explain most of the phenomenological observations associated with scuffing failure.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tribology International - Volume 38, Issue 3, March 2005, Pages 277-282
Journal: Tribology International - Volume 38, Issue 3, March 2005, Pages 277-282
نویسندگان
O.O. Ajayi, J.G. Hersberger, J. Zhang, H. Yoon, G.R. Fenske,