کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1577738 1514805 2012 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
High strength and high electrical conductivity Cu–Cr system alloys manufactured by hot rolling–quenching process and thermomechanical treatments
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
High strength and high electrical conductivity Cu–Cr system alloys manufactured by hot rolling–quenching process and thermomechanical treatments
چکیده انگلیسی

Cu–Cr system alloy strips were manufactured by an online hot rolling–quenching (HR–Q) process and subsequent thermomechanical treatments. The microstructure and properties of the alloys were investigated by observations of optical microscopy and transmission electron microscopy, and measurements of microhardness and electrical conductivity. The results show that the HR–Q process and thermomechanical treatments are successfully developed to manufacture Cu–Cr system alloy strips with good combinations of strength, conductivity and softening resistance. Ordered fcc structure Cr precipitates, which are decomposed from the thermomechanical treated alloys, are considered to be precursors to the formation of equilibrium bcc Cr precipitates and responsible for the improvement of properties during near peak aging. Small additions of Zr, Mg and Si effectively improve the hardness and softening resistance of Cu–Cr alloy, and slightly reduce the electrical conductivity. The achievement of high strength and high electrical conductivity in the alloys is ascribed to the interactions of grain boundary strengthening, strain hardening and precipitation hardening.


► HR–Q and thermomechanical treatments are successfully developed to manufacture Cu–Cr system alloys.
► Ordered fcc structure Cr precipitates are considered to be precursors of equilibrium bcc Cr precipitates.
► The Cr precipitates are responsible for the improvement of properties.
► Additions of Zr, Mg and Si bring about significant improvement in properties of Cu–Cr alloy.
► Good properties are ascribed to grain boundary strengthening, strain hardening and precipitation hardening.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 538, 15 March 2012, Pages 295–301
نویسندگان
, , , , , , , ,