Microstructure and mechanical properties of Al-3Fe alloy processed by equal channel angular extrusion

6th International Conference on Nanomaterials by Severe Plastic Deformation

材料科学;化学

Fuxiao, Yu^1 ; Fang, Liu^1 ; Dazhi, Zhao^1 ; Toth, Laszlo S.^2

School of Materials and Metallurgy, Northeastern University, Shenyang 110819, China^1

Laboratory of Excellence on Design of Alloy Metals for Low-mass Structures, Université de Lorraine, Metz, France^2

关键词: Al-Fe alloys;    Equal channel angular extrusion;    Eutectic composition;    Eutectic microstructure;    Microstructure and mechanical properties;    Severe plastic deformations;    Solidification condition;    Uniform distribution;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/63/1/012079/pdf
DOI  :  10.1088/1757-899X/63/1/012079

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Al-Fe alloys are attractive for applications at temperatures beyond those normally associated with the conventional aluminum alloys. Under proper solidification condition, a full eutectic microstructure can be generated in Al-Fe alloys at Fe concentration well in excess of the eutectic composition of 1.8 wt.% Fe. The microstructure in this case is characterized by the metastable regular eutectic Al-Al6Fe fibers of nano-scale in diameter, instead of the equilibrium eutectic Al-Al3Fe phase. In this study, the microstructure and mechanical properties of the Al-3Fe alloy with metastable Al6Fe particles deformed by equal channel angular extrusion were investigated. Severe plastic deformation results in a microstructure consisting of submicron equiaxed Al grains with a uniform distribution of submicron Al6Fe particles on the grain boundaries. The room temperature tensile properties of the alloy with this microstructure will be presented.