Mechanical properties and strengthening mechanisms in laser beam welds of pure titanium

Science and Technology of Welding and Joining - Tập 16 Số 7 - Trang 581-585 - 2011
H Liu1, Kazuya Nakata1, Norifumi Yamamoto2, Jinsun Liao2
1Joining and Welding Research Institute, Osaka University, Ibaraki 567-0047, Japan
2Technology Development Headquarters, Kurimoto Ltd., Osaka 559-0021, Japan

Tóm tắt

The mechanical properties and strengthening mechanisms in laser beam welds of pure titanium were investigated. Although grain coarsening is evidently observed in the heat affected zone (HAZ) and fusion zone (FZ) compared with the base metal (BM), the tensile and hardness tests indicate that the HAZ and FZ are stronger than the BM under the welding conditions employed in the present work. The strengthening mechanism in the HAZ is ascribed to the substructure strengthening and that in the FZ is attributed to the combination of the substructure strengthening and the solute solution strengthening.

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Thông tin xuất bản

Science and Technology of Welding and Joining

Tập 16 Số 7

581-585

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