کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
830077 1470350 2013 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of secondary processing on the microstructure and wear behavior of spray formed Al–30Mg2Si–2Cu alloy
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
Effect of secondary processing on the microstructure and wear behavior of spray formed Al–30Mg2Si–2Cu alloy
چکیده انگلیسی

In the present work, Al–30Mg2Si–2Cu alloy has been spray formed and subsequently hot pressed for densification. The alloy is then subjected to solutionizing and isothermal aging treatments. The microstructural features, hardness and wear behavior of spray formed and secondary processed alloys have been evaluated individually and compared with that of as-cast alloy. The microstructure of spray formed alloy showed refined and globular shaped primary Mg2Si intermetallic particles and Al2Cu precipitate particles uniformly distributed in Al matrix. The microstructure was refined further after hot consolidation. The microstructure after solution heat treatment appeared similar to that of the spray formed alloy but aging led to a further refinement in the microstructure compared to that of the hot pressed alloy. The evaluation of wear behavior of these alloys, under dry sliding condition, showed that the age hardened alloy exhibits maximum wear resistance and minimum coefficient of friction over the entire range of applied load (10–50 N) at a sliding speed of 2 ms−1 followed by hot pressed, spray formed and solution heat treated alloys. The as-cast alloy showed the least wear resistance and highest coefficient of friction. Similar trend has been observed even in their hardness values too. The wear resistance of the alloys is discussed in light of their microstructural modifications induced during spray forming and subsequent secondary processing and also the topography of worn surfaces.

Figure optionsDownload as PowerPoint slideHighlights
► The microstructure of spray formed Al–30Mg2Si–2Cu alloy has been finely refined.
► The effect of secondary processing on spray formed alloy has been investigated.
► Aging improved the wear resistance of spray formed Al–30Mg2Si–2Cu alloy.
► Hardness of age hardened spray formed alloy is higher than that of as-cast alloy.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials & Design - Volume 47, May 2013, Pages 489–496
نویسندگان
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