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Microstructural evolution and properties of a Cu-Cr-Ag alloy during continuous manufacturing process 被引量:4
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作者 Gao-Lei Xu Li-Jun Peng +5 位作者 Guo-Jie Huang Hao-Feng Xie Zhen Yang Xue Feng Xiang-Qian Yin Xu-Jun Mi 《Rare Metals》 SCIE EI CAS CSCD 2021年第8期2213-2220,共8页
Microstructure evolution and properties of a Cu-Cr-Ag alloy during the continuous manufacturing process were investigated in detail by scanning electron microscopy(SEM)and transmission electron microscopy(TEM)in the s... Microstructure evolution and properties of a Cu-Cr-Ag alloy during the continuous manufacturing process were investigated in detail by scanning electron microscopy(SEM)and transmission electron microscopy(TEM)in the study.The Cu-Cr-Ag alloy rod with uniform compositions is fabricated by upward continuous casting technology.Few of the Cr phases are observed in the ascast alloy.During the continuous extrusion process,the severe shear deformation and the dynamic aging occur.The average grain size of as-extruded alloy is much smaller than that of as-cast alloy.Both fcc and bcc Cr precipitates appear in the matrix.The interaction mode between dislocations and precipitates can be identified as Orowan bypass mode according to the TEM observations.The overall difference in the yield strength between as-cast and as-extruded Cu-Cr-Ag alloy is attributed to solid solution strengthening,grain refinement strengthening,precipitation hardening and working hardening. 展开更多
关键词 Cu-Cr-Ag alloy upward continuous casting Continuous extrusion Microstructure Physical properties
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