Engineering Alloys Division

Experience

Research Interests

Development of advanced DS and SX superalloys
Formation mechanism and control techniques of defects in DS and SX castings
Failure mechanisms of advanced DS and SX alloys in different orientations, or with various defects (recrystallization, low angle grain boundary…)
High gradient directional solidification technology assisted by liquid metal coolant

Selected publications

High temperature creep of directionally solidified Ni base superalloys containing local recrystallization, G. Xie, L. Wang, J. Zhang, L. H. Lou, Superalloys 2008, 453, TMS, September 14-18, 2008, USA.
Effect of heat treatment atmosphere on surface recrystallization of a directionally solidified Ni-base superalloy, G. Xie, J. Zhang, L.H. Lou, Scripta Mater., 59 (2008) 858.
Influence of Surface Recrystallization on the High Temperature Properties of a Directionally Solidified Ni-Base Superalloy, G. Xie, L. Wang, J. Zhang, L.H. Lou, Metall. Mater. Trans. A, 39 (2008) 206.
Directional solidification assisted by liquid metal cooling, J. Zhang, L. H. Lou, J. Mater. Sci. Technol., 23 (2007) 289, (invited review).
On the role of carbides during the recrystallization of a directionally solidified nickel-base superalloy, L. Wang, G. Xie, J. Zhang, L. H. Lou, Scripta Mater., 55 (2006) 457.
Effect of Zr and B on castability of Ni-based superalloy IN792, J. Zhang, R. F. Singer, Metall. Mater. Trans. A, 35A (2004) 1337.
Effect of Grain Boundary Characteristics on Castability of Nickel-based Superalloys, J. Zhang, R. F. Singer, Metall. Mater. Trans. A, 35A, (2004) 939.
Effect of Ti and Ta on hot cracking susceptibility of directionally solidified Ni-based superalloy IN792, J. Zhang, Scripta Mater., 48 (2003) 677.
Hot tearing of Ni-base superalloys during directional solidification, J. Zhang, R. F. Singer, Acta Mater., 50 (2002) 1869.