کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
618154 1455019 2011 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Bauschinger effect in wear of Cu–40Zn alloy and its variations with the wear condition
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
Bauschinger effect in wear of Cu–40Zn alloy and its variations with the wear condition
چکیده انگلیسی

The performance of a Cu–40Zn alloy during unidirectional and bidirectional (forth-and-back) sliding wear processes was investigated. It was observed that the alloy was worn less during bidirectional wear than during unidirectional wear. The mass loss of alloy decreased as the number of sliding-direction reversals was increased; correspondingly, hardness of the worn surface decreased after initial increase. Illustrative finite element modeling showed that bidirectional sliding resulted in lower residual stress than the unidirectional sliding. It appears that Bauschinger effect played a role during the bidirectional wear processes. Such a role was dependent on the sliding speed and applied load, which influenced the wear behavior through alternating plastic deformation path and cracking events. Mechanisms responsible for the observed phenomena are discussed.


► We investigated the responses of Cu–40%Zn to wear respectively under unidirectional and bidirectional sliding conditions.
► The alloy was worn less during bidirectional wear than during unidirectional wear.
► The mass loss decreased as the number of sliding-direction reversals (CN) was increased and corresponding hardness of worn surface decreased with increasing CN after an initial increase.
► Bauschinger effect played a role in weakening the strain-hardening effect during bidirectional wear processes.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Wear - Volume 271, Issues 9–10, 29 July 2011, Pages 1237–1243
نویسندگان
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