Standard test specimens of zinc bronze (Cu88, Sn10, Zn2)--Parts I and II . A, Specimen 285; 3X B, Specimen 571; 3X. The large crystal extendmgnearly across the bar most probably determinedthe position of the break. C, Specimen 312; 3X. The three crystals of nearly thesame orientation act similarly to a single crystal D, Specimen 301 Fig. 17.—Types of fracture: Intercrystalline and intracrystallineA, B, and C, intracrystalline; D, intercrystalline Stattdard Zinc-Bronze Test Bars 6i 1. TYPE OF FRACTURE An interesting and important point is the determination whether,dming tension, the break final
Standard test specimens of zinc bronze (Cu88, Sn10, Zn2)--Parts I and II . A, Specimen 285; 3X B, Specimen 571; 3X. The large crystal extendmgnearly across the bar most probably determinedthe position of the break. C, Specimen 312; 3X. The three crystals of nearly thesame orientation act similarly to a single crystal D, Specimen 301 Fig. 17.—Types of fracture: Intercrystalline and intracrystallineA, B, and C, intracrystalline; D, intercrystalline Stattdard Zinc-Bronze Test Bars 6i 1. TYPE OF FRACTURE An interesting and important point is the determination whether,dming tension, the break finally occurs between or through thecrystals. These two types of break may be termed intercrystal-line and intracrystalline, respectively. To determine this pointthe two parts of a good many broken tensile specimens were sol-dered accurately together and a longitudinal section cut throughthe soldered portion of each bar. The cut face was pohshed andetched to reveal the macroscopic crystalline structiure. Theresults are summarized in the preceding table. Fig. 17 illus-trates the appearance of several such bars and show clearly thatthe prevailing type of break is the intracrystalline one rather thana simple pul
Size: 2918px × 856px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookpublisherwashingtongovtprin
