A texture analysis of material which had been deformed in compression showed that the <110> fiber component became the predominant deformation component at all test temperatures, as in the case of conventional face-centered cubic compression. Semi-quantitative measurements of mechanical twinning, as deduced from texture changes in compressed polycrystalline material at low strains, were possible by means of a simple Schmid factor analysis. The results indicated that mechanical twinning occurred at very low strains, and accounted for up to 33% of the total strain at 650C. At 850C, where thermal activation made super-dislocation motion easier, the contribution which was made by mechanical twinning was smaller. At room temperature, the occurrence of cracking complicated the interpretation of the data, but mechanical twinning still contributed some 10% of the total strain.

S.W.Cheong, J.D.Sadowitz, T.R.Bieler: Scripta Materialia, 1996, 35[5], 661-7