紀要論文

紀要論文

text

Transactions of JWRI. 2005, 34(1), p. 37-42

Control of Grain Growth Process by a Local Heating Method

英語

text

2005-07

The present work deals with a preferential grain growth process in a localized region utilizing a local heating method in order to fabricate some unique microstructures, different from those fabricated in the homogeneous way by microstructure evolution. A Monte Carlo simulation of grain growth under a heterogeneous temperature gradient, i.e. spot heating, was performed. A steep temperature gradient brought about preferential grain growth in the higher temperature region, showing that the local heating is effective for the control of grain structure of polycrystalline materials. Such a type of preferential grain growth became less significant under a mild temperature gradient. Local heating of pure copper foil of 0.2mm in thickness utilizing a laser beam was performed by changing the irradiation conditions. In the case of 200W of laser power and 18mm/s for sweep velocity, some grains were observed to have larger grain size than their neighbors, suggesting a possibility of preferential grain growth in localized regions.

10.18910/10789

10789

Control of Grain Growth Process by a Local Heating Method

大阪大学接合科学研究所

英語

2005-07

Transactions of JWRI

34

1

37

42

https://hdl.handle.net/11094/10789

10.18910/10789

https://doi.org/10.18910/10789