National Natural Science Foundation of China(51202196);Northwestern Polytechnical University(NPU)Foundation for Fundamental Research(JC201111);Research Fund of the State Key Laboratory of Solidification Processing(NWPU)(58-TZ-2011);"111"Project(B08040)
Supported by Chinese National Foundation of High Technology (2008AA8041606);Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology (07DZ22302);Shanghai Educational Development Foundation (2007CG26);Program for Young Excellent Talents in Tongji University (2006KJ052)