TY - GEN
T1 - Effect of texture on fracture limit strain in friction stir processed AZ31B Mg alloy
AU - Sato, Yutaka S.
AU - Sugimoto, Akihiro
AU - Kokawa, Hiroyuki
AU - Lee, Chang Woo
PY - 2008
Y1 - 2008
N2 - Mg alloy has poor ductility and formability at room temperature because of lack of the active slip systems. Recently, it has been reported that the grain refinement improves its ductility, thus it would be expected that friction stir processing (FSP) enhances the formability of Mg alloys because FSP can create homogeneous microstructure consisting of fine grains. However, FSP leads to not only the grain refinement, but also the strong accumulation of crystallographic texture in Mg alloy. It is likely that the texture formed during FSP also affects the formability significantly in Mg alloy, but effect of texture on formability in FSPed Mg alloy has not been examined yet. In this study, FSP was applied to AZ31B Mg alloy at several FSP parameters and the stir zones having the different microstructural features were obtained. Effect of microstructure, especially grain size and texture, on fracture limit major strain under the uniaxial tension was examined in the stir zone of the FSPed AZ31B Mg alloy, and the microstructural features for the formability enhancement in Mg alloy were proposed.
AB - Mg alloy has poor ductility and formability at room temperature because of lack of the active slip systems. Recently, it has been reported that the grain refinement improves its ductility, thus it would be expected that friction stir processing (FSP) enhances the formability of Mg alloys because FSP can create homogeneous microstructure consisting of fine grains. However, FSP leads to not only the grain refinement, but also the strong accumulation of crystallographic texture in Mg alloy. It is likely that the texture formed during FSP also affects the formability significantly in Mg alloy, but effect of texture on formability in FSPed Mg alloy has not been examined yet. In this study, FSP was applied to AZ31B Mg alloy at several FSP parameters and the stir zones having the different microstructural features were obtained. Effect of microstructure, especially grain size and texture, on fracture limit major strain under the uniaxial tension was examined in the stir zone of the FSPed AZ31B Mg alloy, and the microstructural features for the formability enhancement in Mg alloy were proposed.
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M3 - Conference contribution
AN - SCOPUS:57649217443
SN - 9780470408346
T3 - Ceramic Transactions
SP - 43
EP - 52
BT - Materials Processing and Texture - A Collection of Papers Presented at the 15th International Conference on Textures of Materials, ICOTOM 15
T2 - Materials Processing and Texture - 15th International Conference on Textures of Materials, ICOTOM 15
Y2 - 1 June 2008 through 6 June 2008
ER -