Thermostability of Al-Cu-Mg-Fe-Ni Alloy with Trace Scandium and Zirconium
来源期刊：材料科学与工程学报2000年增刊第1期
论文作者：Yu Kun Li Songrui Li Wenxian
关键词：Al-Cu-Mg-Fe-Ni alloy phase Al3(Sc; Zr) tensile property annealing behavior;
摘 要：Three Al-Cu-Mg-Fe-Ni-Sc-Zr ingot metallurgy alloys with different compositions had been prepared. The hardness variations of cold-rolled alloy plates during annealing process had been measured. The tensile properties at both ambient and elevated temperatures were also measured. The microstructures of alloys were observed by using optical microscope and TEM. It was found that the dispersed Al3(Sc, Zr) particles could pin dislocations, stabilize substructures and impede the movement of boundaries. The ambient and elevated temperature properties of alloy with Al3(Sc, Zr) particles were improved. And the tensile strength of alloy did not improve obviously with rich iron and nicker addition.
Yu Kun1，Li Songrui1，Li Wenxian1
(1.Department of Materials Science and Engineering, Central South University of Technology,Changsha 410083, P. R. China)
摘要:Three Al-Cu-Mg-Fe-Ni-Sc-Zr ingot metallurgy alloys with different compositions had been prepared. The hardness variations of cold-rolled alloy plates during annealing process had been measured. The tensile properties at both ambient and elevated temperatures were also measured. The microstructures of alloys were observed by using optical microscope and TEM. It was found that the dispersed Al3(Sc, Zr) particles could pin dislocations, stabilize substructures and impede the movement of boundaries. The ambient and elevated temperature properties of alloy with Al3(Sc, Zr) particles were improved. And the tensile strength of alloy did not improve obviously with rich iron and nicker addition.
关键词:Al-Cu-Mg-Fe-Ni alloy phase Al3(Sc; Zr) tensile property annealing behavior;
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