日本金属学会誌

J. Japan Inst. Metals, Vol. 16, No. 9 (1952),
pp. 475-478

Light Figures in Single Crystals of Iron-Aluminium Alloys

Mikio Yamamoto, Ryôfu Miyasaya and Jirô Watanabe


Abstract:

Light figures produced by the three principal crystallographic planes {100}, {110} and {111} of etched single crystals of iron-aluminium alloys containing less than 6% Al were observed and their suitability for the orientation determination byteh light-figure method was examined. It was found that light figures revealed by etching for several minutes with 20% aqueous solution of ammonium persulphate were suitable to the orientation determination of iron-aluminium single crystals containing less than 4% Al,and those produced by etching for several minutes with saturated aqueous solution of ferric chloride were appropriate for cases of single crystals of pure iron and alloys containing more than 4% Al.


(Received 1952/6/7)

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