Reporter:Tianqing Li, docter of Material Science and Technology, Shandong University and directed by Prof.ChuanSong Wu who engaged in welding process of numerical simulation of research. Published 1 article in journal and 2 articles in conference, and won the " The best paper award of Chinese welding society " in 2011.

Title:Modeling of the thermal fluid flow and keyhole shape in stationary plasma arc welding

Inroduction of the report:The mathematical model was established to simulate the fluid flow in the weld pool and heat transfer during stationary keyhole plasma arc welding. The level set method was used to capture and track the keyhole boundary. By the model with considering the interaction between the weld pool and keyhole shape, the thermal fluid flow and keyhole evolution in stationary plasma arc welding was simulated and was vindicated.

Reporter:Junling Xu,master ofMaterial Science and Technology, Shandong University and directed by Prof. who engaged in Nano porous metals. Published 2 articles and are cited by SCI, won “The social practice scholarship”

Title:Anion kinds, concentration, temperature, and overpotential's influence on the dealloying of Al₂Au

Inroduction of the report:By changing the Cl^-concentration (0.1M, 1M, 5M), temperature (273K, 298K, 343K), and overpotential (-50mV, 0mV, 50mV, 100mV, 200mV), we research the external conditions influence on Al₂Au electrochemical properties, electrochemical dealloying process, nanostructure, Au_adsurface diffusion coefficient and activation energy. Further, we research the kind strong acid anion（HCl, HNO₃,H₂SO₄,HClO₄）and weak acid anion (organic acid anion) 's influence on the dealloying of Al₂Au.

Time:3：30 pm, April 12 (Thursday), 2012

Location:conference room 321, Xipei Building in Qianfo mountain campus