Modeling of diffusional phase transformation in multi-component systems with stoichiometric phases

作者：Svoboda J; Fischer F D^*; Abart R

来源：Acta Materialia, 2010, 58(8): 2905-2911.

DOI：10.1016/j.actamat.2010.01.019

• Interdiffusion
• Intermetallics
• Phase transformation kinetics
• Modeling
• Kirkendall effect

In many multi-component systems, phases can be considered stoichiometric If two phases not stably coexisting are brought into contact, multiple new phases may nucleate at the interface and develop into a sequence of layers with different phase compositions, which grow between the original phases Inert markers at the original contact may show "splitting" of the marker (Kirkendall) plane, called polyfurcation Nearly exclusively binary systems have been studied theoretically or experimentally A thermodynamic model for the kinetics of diffusional phase transformation in multi-component systems and motion of the polyfurcated Kirkendall plane is derived by the thermodynamic extremal principle The degrees of freedom of the system are d

• 出版日期2010-5