MRS Proc. 1998 DOI: 10.1557/proc-524-37 View full text
J. D. Haase, A. Guvenilir, J. R. Witt, S. R. Stock

Abstract: ABSTRACTThe use of synchrotron polychromatic x-ray microbeams in the transmission geometry is described for mapping grain orientation as a function of position and for relating this microtexture to the formation of large asperities on fatigue crack surfaces in Al-Li 2090 T8E41. In common with the centers of rolled plates of many aluminum alloys, Al-Li 2090 T8E41 has a sharp average texture or macrotexture different from that in the outer portions of the plate. The geometry of large asperities in Al-Li 2090 has…

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