Metallurgy; an introduction to the study of physical metallurgy . ame rate as the rest of the steel,and the bands appear as regions of different colour. Theauthor and Haughton C) have recently shown that the sameeffect may be produced by the electro-chemical deposition ofcopper from a solution of ferric chloride and hydrochloric acidcontaining a small amount of copper chloride. This reagentdevelops the banded structure of steel containing phosphorusin a striking manner, as illustrated in Fig. 127, Plate striking persistence of these bands, not as a matter of coldworking, but as an i
Metallurgy; an introduction to the study of physical metallurgy . ame rate as the rest of the steel,and the bands appear as regions of different colour. Theauthor and Haughton C) have recently shown that the sameeffect may be produced by the electro-chemical deposition ofcopper from a solution of ferric chloride and hydrochloric acidcontaining a small amount of copper chloride. This reagentdevelops the banded structure of steel containing phosphorusin a striking manner, as illustrated in Fig. 127, Plate striking persistence of these bands, not as a matter of coldworking, but as an indication of actual displacement, apartfrom crystaUine structure, is clearly shown by an experimentmade by the author. A typically banded steel was subjectedto a Brinell ball impression; a section was then cut andpohshed, and the manner in which the impress of the ball hasdisplaced the bands is clearly seen in Fig. 128, Plate piece of steel was then very thoroughly annealed, so asto remove all strain-hardness and to allow of complete re- PLATE Fig. 126. Fig. 127. ^^^^^, _ ????** SB i^;^fe-£if^S±r: - --«»i«M«Br^:».:i=^^=:^^=i^-. - . -
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectmetals, bookyear1922
