TY - JOUR
T1 - Superplasticity and crystallographic orientation distribution in friction stir processed sheet of an Al-Mg-Mn Alloy
AU - Takayama, Yoshimasa
AU - Nagai, Takayuki
AU - Shibayanagi, Toshiya
AU - Kato, Hajime
AU - Watanabe, Hideo
PY - 2005
Y1 - 2005
N2 - Superplasticity and crystallographic orientation distribution of an Al-Mg-Mn sheet subjected to friction stir processing (FSP) have been investigated. The FSP was developed by adapting the concepts of friction stir welding to obtain a fine grain size in a stirred zone. Grain refinement was achieved by the FSP to give a smaller grain size of about 4μm than a value of 26μm in the as-received sheet. The SEM/EBSP analysis of the specimen before and after the FSP revealed a fraction of high angle grain boundaries became a higher percentage of 83% due to the FSP than 75% before. The elongation to failure in the FSPed sample had a maximum value of 361% at 773K and 1.1×10-3 s-1. Further, change in crystallographic orientation distribution is investigated during tensile testing in consideration of deformation mechanism.
AB - Superplasticity and crystallographic orientation distribution of an Al-Mg-Mn sheet subjected to friction stir processing (FSP) have been investigated. The FSP was developed by adapting the concepts of friction stir welding to obtain a fine grain size in a stirred zone. Grain refinement was achieved by the FSP to give a smaller grain size of about 4μm than a value of 26μm in the as-received sheet. The SEM/EBSP analysis of the specimen before and after the FSP revealed a fraction of high angle grain boundaries became a higher percentage of 83% due to the FSP than 75% before. The elongation to failure in the FSPed sample had a maximum value of 361% at 773K and 1.1×10-3 s-1. Further, change in crystallographic orientation distribution is investigated during tensile testing in consideration of deformation mechanism.
KW - Al-Mg-Mn alloy
KW - Class I superplasticity
KW - Crystallographic orientation
KW - Friction stir processing
KW - SEM/EBSP analysis
UR - http://www.scopus.com/inward/record.url?scp=17144394489&partnerID=8YFLogxK
U2 - 10.4028/0-87849-960-1.3029
DO - 10.4028/0-87849-960-1.3029
M3 - 会議記事
AN - SCOPUS:17144394489
SN - 0255-5476
VL - 475-479
SP - 3029
EP - 3032
JO - Materials Science Forum
JF - Materials Science Forum
IS - IV
T2 - PRICM 5: The Fifth Pacific Rim International Conference on Advanced Materials and Processing
Y2 - 2 November 2004 through 5 November 2004
ER -