Product Code: ICAL07_M304

Local Heating System using a Fiber Laser for Controlling Microstructures
Authors:
Masahiro Tsukamoto, Joining and Welding Research Institute, Osaka University; Ibaraki, Osaka Japan
Toshiya Shibayanagi, Joining and Welding Research Institute, Osaka University; Ibaraki, Osaka Japan
Hitoshi Nakano, Kinki University; Osaka Japan
Takuto Yamashita, Osaka University; Suita, Osaka Japan
Yukihiro Soga, Osaka University; Suita, Osaka Japan
Nobuyuki Abe, Joining and Welding Research Institute, Osaka University; Ibaraki, Osaka Japan
Presented at ICALEO 2007

Conventional heat treatments utilizing homogeneous temperature fields that have been commonly performed in industry change these parameters in all material areas. Thus some important local distributions of microstructure parameters may have disappeared or become passive and disabled and fail to contribute to the evolution of microstructures as in texture development.
Local heating method would become a candidate method to control evolution processes of microstructure as compared with homogeneous heat treatment since only some selected areas are heated without affecting to the other regions.
In the present study, a fiber laser local heating system has been developed, and local heating of pure aluminum plate has been tried to investigate microstructure changes by local heating.