Structures and mechanical properties of Al-Fe-Zr alloy extrudates prepared by a rapid solidification processing.
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The relation between microstructures and mechanical properties has been investigated on Al-8%Fe and Al-8%Fe-1-3%Zr alloys produced by the combined rapid solidification and extrusion processing. All extrudates exhibited deformation structures produced during extrusion at 703K. Dislocation structures were stable even after exposure at 573K for 100 h. At temperatures higher than 573K, softening took place in all specimens due both to the recovery of dislocation structures and to the transformation of the metastable Al6Fe phase to the coarse and stable Al3Fe phase. Zirconium remained supersaturated in the aluminum matrix even after extrusion. Tensile property of Al-8%Fe alloy markedly increased with increasing amount of zirconium up to 623K. This effect of zirconium was explained by the increased supersaturation of zirconium in the matrix.
- 一般社団法人 軽金属学会の論文
一般社団法人 軽金属学会 | 論文
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