Variant selection in transformation texture from the {beta} to {alpha} phase in Cu-40 mass% Zn alloy
- Osaka Univ., Suita, Osaka (Japan). Dept. of Materials Science and Engineering
The rolling texture and variant selection in texture during the phase transformation from {beta} to {alpha} in Cu-40 mass% Zn were investigated using X-ray back reflection and electron back-scatter diffraction pattern (EBSP) techniques. The rolling texture of the {beta} parent phase, before the phase transformation, was composed of {l_brace}111{r_brace}{l_angle}1{bar 1}0{r_angle}, {l_brace}001{r_brace}{l_angle}110{r_angle} and {l_brace}111{r_brace}{l_angle}{bar 1}{bar 1}2{r_angle}. Variant selection occurred during the {beta} to {alpha} phase transformation from the cold-rolled parent {beta} phase, even when the phase transformation following the Kurdjumov-Sachs relationship was controlled by a diffusion process. The variant selection was related to the Bain distortion for each {alpha} variant during the phase transformation from the {beta} to {alpha} phase. A limited set of {alpha} variants was chosen to minimize the residual stress induced in the deformed {beta} parent phase by the Bain distortion. The type of selected variants changed with the rolling texture of {beta} parent phase. The selectivity of specific variants increased and was stimulated by both annealing temperature and rolling reduction.
- OSTI ID:
- 353479
- Journal Information:
- Acta Materialia, Vol. 47, Issue 6; Other Information: PBD: 23 Apr 1999
- Country of Publication:
- United States
- Language:
- English
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