TY - JOUR
T1 - Superplastlcity of a Cu-Zn-Sn alloy processed by equal-channel angular pressing
AU - Neishi, Koji
AU - Uchida, Toru
AU - Ashie, Nobuyuki
AU - Yamauchi, Atsushi
AU - Nakamura, Katsuaki
AU - Horita, Zenji
AU - Langdon, Terence G.
PY - 2004/1/1
Y1 - 2004/1/1
N2 - Equal-channel angular pressing (ECAP) was conducted using dies having two different channel angles, Φ=90° and 135°, for grain refinement of a Cu-38%Zn-3%Sn alloy. Orientation image microscopy (OIM) was used for microstructural observations and phase identification including the analysis of misorientation angles. Tensile testing and upset testing were carried out at elevated temperatures to examine the superplastic ductility and the formability of the alloy. The grain refinement was achieved effectively by conducting the ECAP at a temperature where a phase transformation occurs. The use of a die having Φ=90° led to a finer grain size with a larger fraction of high angle grain boundaries than using a die having Φ=135°.
AB - Equal-channel angular pressing (ECAP) was conducted using dies having two different channel angles, Φ=90° and 135°, for grain refinement of a Cu-38%Zn-3%Sn alloy. Orientation image microscopy (OIM) was used for microstructural observations and phase identification including the analysis of misorientation angles. Tensile testing and upset testing were carried out at elevated temperatures to examine the superplastic ductility and the formability of the alloy. The grain refinement was achieved effectively by conducting the ECAP at a temperature where a phase transformation occurs. The use of a die having Φ=90° led to a finer grain size with a larger fraction of high angle grain boundaries than using a die having Φ=135°.
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M3 - Conference article
AN - SCOPUS:3142713912
SN - 0255-5476
VL - 447-448
SP - 483
EP - 488
JO - Materials Science Forum
JF - Materials Science Forum
T2 - Superplasticity in Advanced Materials: 8th International Conference on Superplasticity in Advanced Materials, ICSAM 2003
Y2 - 28 July 2003 through 30 July 2003
ER -