Details

Autor(en) / Beteiligte

• Kim, Jonghyun
• Lee, Dongmyung
• Shin, Seungyong
• Lee, Changhee

Titel

Phase evolution in Cu 54Ni 6Zr 22Ti 18 bulk metallic glass Nd:YAG laser weld

Ist Teil von

• Materials science & engineering. A, Structural materials : properties, microstructure and processing, 2006, Vol.434 (1), p.194-201

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2006

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• A Nd:YAG pulse laser was chosen as the heat source to make a Cu 54Ni 6Zr 22Ti 18 bulk metallic glass (BMG) weld with a critical thickness of 6 mm. To make a crystallization-free BMG weld, both empirical and numerical approaches were conducted. For the empirical approach, the pulse shape including peak pulse power and pulse duration was pre-selected and the phase evolution in the BMG bead-on-plate was then investigated according to the pulse frequency and travel speed. Thermal cycles of heating and cooling were estimated by a numerical method. Through the results, crystallizations at each weld metal and heat-affected zone in the BMG bead on plate (BOP) weld were considered.