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Kirkuchi pattern of superalloy Astralloy

Kirkuchi pattern of superalloy Astralloy

A630/0148

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Credit

Y.P. LIN & J.W. STEED, UNIVERSITY OF BRISTOL / SCIENCE PHOTO LIBRARY Y.P. LIN & J.W. STEED, UNIVERSITY OF BRISTOL / SCIENCE PHOTO LIBRARY

Caption

Convergent beam diffraction image, or Kirkuchi pattern, of a particle of gamma phase in the superalloy "Astralloy". The gamma phase gives Astralloy its high-temperature properties. Named for their Japanese inventor, Kirkuchi patterns are uniquely characteristic of a material & can be used to "fingerprint" the smallest of particles in an alloy. The pattern is created in the transmission electron microscope by using a convergent beam of electrons. The number, angles, & arrangement of the lines in the pattern all serve, in this case, to identify the gamma phase. Ref: MICROCOSMOS, fig.

Release details

Model release not required. Property release not required.

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