Effect of the rate of cooling on the magnetic properties of an annealed eutectoid carbon steel . s called to the 1-0 1-0 asz -( ^ 0-5 0 ? --> ^> 0 ^^^ ^ 0 250 SO0 7?o iooo Magnetizing forceFig. 5.—Curves showing effect of rate of cooling annealed eutectoid carbon steel uponreciprocal of susceptibility gradual shift of the bend in the curves toward lower values of themagnetizing force with decreasing values of the rate of cooling. 3. MICROSCOPICAL ANALYSIS The micrographs of Figs. 6 to 11, inclusive, all at a magnificationof 500 diameters, represent the average structural condition shownb
Effect of the rate of cooling on the magnetic properties of an annealed eutectoid carbon steel . s called to the 1-0 1-0 asz -( ^ 0-5 0 ? --> ^> 0 ^^^ ^ 0 250 SO0 7?o iooo Magnetizing forceFig. 5.—Curves showing effect of rate of cooling annealed eutectoid carbon steel uponreciprocal of susceptibility gradual shift of the bend in the curves toward lower values of themagnetizing force with decreasing values of the rate of cooling. 3. MICROSCOPICAL ANALYSIS The micrographs of Figs. 6 to 11, inclusive, all at a magnificationof 500 diameters, represent the average structural condition shownby etching for 10 seconds in 5 per cent alcoholic picric acid. Thedifference between the furnace-cooled, the air-cooled, and thelime-cooled specimens is very marked. The air-cooled material(specimen 16, Fig. 6) consists largely of sorbite with interveningpatches of coarse pearlite. In these patches free ferrite is seen 7 This analysis was made by H. S. Rawdon, chief of the metallographic laboratory of the Bureau ofStandards, to whom the writers are greatly indebted for his painstaking Fig. 6.—Micrograph of specimen 16, cooled in air from 800° C
Size: 1854px × 1348px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, bookpublishernatio, bookyear1921
