日本金属学会誌

J. Japan Inst. Metals, Vol. 57, No. 11 (1993),
pp. 1244-1250

Microstructure and Mechanical Properties of Rapidly Solidified Al--Fe--Ni Alloy Ribbons

Kunimasa Takeshita, Yoshinori Takezawa and Zhao Gaoyang

Department of Mechanical Engineering, Faculty of Engineering, Fukui University, Fukui

Abstract:

Three alloys of Al--5.9 mol%Fe--1.3 mol%Ni, Al--5.3 mol%Fe--2.7 mol%Ni and Al--5.1 mol%Fe were rapidly solidified to ribbons by the planar flow casting method. The effects of nickel addition to Al--Fe alloy on the microstructure and mechanical property were investigated by examining the microstructures and mechanical properties of the as-solidified and subsequently annealed ribbons. As for the nickel-containing alloys, the coarsening of eutectic is retarded and the sum of volume fractions of intermetallic compounds increases with annealing.
The hardness, 0.1% proof stress and ultimate tensile strength of the nickel containing alloys consequently increase on annealing at 500 K for 7.2 ks, while those of the Al--Fe alloy decrease on the same annealing. It is found in all the alloys regardless of the annealing that the 0.1% proof stress σy0.1 (MPa) and ultimate tensile strength σTS (MPa) at room temperature are related to the ribbon hardness Hv as; σy0.1=2.45Hv and σTS(MPa)=167+2.13Hv respectively.


(Received August 17, 1992)

Keywords:

aluminum alloy, rapid solidification, planar flow casting, microstructure, mechanical properties


PDF(Free)PDF (Free)     Table of ContentsTable of Contents

Please do not copy without permission.