کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1638946 1517034 2009 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of grain refinement on phase transformation behavior and mechanical properties of Cu-based alloy
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Effect of grain refinement on phase transformation behavior and mechanical properties of Cu-based alloy
چکیده انگلیسی

A small amount of misch metal was added to Cu-Zn-Al alloy in order to study its effect on grain refinement, mechanical properties, phase transformation behavior and stabilization of martensite. It is found that the addition of misch metal is very effective for reducing the grain size. The coarse grains over 1 000 μm are refined to the size of 30 μm by the addition of 0.43% (mass fraction) misch metal. The grain size of thermo-mechanically treated alloys is barely affected by cold working. The fracture strength and ductility increase significantly with the increase of misch metal content when tensile test is carried out below Mf temperature. Also, the fracture strength is larger in the case of post-quench ageing treatment than that in the case of direct quench ageing treatment. The fracture mode is changed from transgranular brittle fracture to ductile fracture with void formation and coalescence by the addition of misch metal.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Transactions of Nonferrous Metals Society of China - Volume 19, Issue 4, August 2009, Pages 979-983