Valerie Randle, "A Microtexture Investigation of Side-Branched Fatigue Cracks in 8090 Al-Li Sheet", Texture, Stress, and Microstructure, vol. 21, Article ID 632310, 14 pages, 1993. https://doi.org/10.1155/TSM.21.219
A Microtexture Investigation of Side-Branched Fatigue Cracks in 8090 Al-Li Sheet
Electron back-scatter diffraction has been used to assess the microtexture of regions of 8090 Al-Li sheet both where side-branched fatigue cracking has occurred and in control areas unaffected by cracking. The microtextures did not reflect the macrotexture as measured by X-rays, indicating inhomogeneous distributions of orientations. The microtexture of the cracked grains was complex and was deconvoluted to reveal several components dominated by the S-texture. The principal difference between cracked and control grains was that for the former the four crystallographically related S variants were intimately mixed on an individual grain scale whereas in the latter was mainly a single variant in a particular area. The results are discussed in terms of both recovery and recrystallisation mechanisms.
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