Change in crystallographic orientation distribution during superplastic deformation in an Al–Zn–Mg–Cu alloy

Isotropic superplastic flow in textured magnesium alloy

“…The overall intensity gradually decreased with deformation both under tension and under compression, and the pre-existing basal texture became slightly more random. The overall weakening is consistent with GBS and the accompanying grain rotation [13][14][15][16][17][18][19][20][21][22], because random sliding events give rise to a homogeneous decrease in intensity. The retention of the /1 1 2 0S component for all the superplastically deformed specimens may reflect a slow grain rotation during superplastic deformation.…”

Changes in Crystallographic Orientation Distribution during Superplastic Deformation in Aluminum Alloys

“…Thus, effect of holding time before the test on m-value was examined. As a result, a distinct difference in m-value during deformation between different holding times [10] was found. For the 1.8ks specimen, the m value increased until a strain of 2, and then lowered gradually.…”

“…Superplastic Characterization. In Al-Zn-Mg-Cu alloy [10], the nominal stress-strain curves at 803K in the strain rate range of 5.6×10 -4 s -1 to 5.6×10 -3 s -1 are plotted in Fig. 1.…”

“…An Al-5.7Zn-2.6Mg-1.5Cu (A7475) alloy sheet of 1.6mm thick was received [10]. The as-received sheet had been produced through an ordinary industrial process.…”

“…The aim of the present paper to review changes in crystallographic orientation distribution during superplastic deformation in Al-Zn-Mg-Cu [10] and Al-Mg-Mn [11] alloys investigated by using EBSD technique to reveal contribution of dislocation slips. Further, the deformation mechanisms in the alloys are discussed based on analysis of EBSD data.…”