Experimental Investigation and Computer Simulation of Diffusion in Fe-Mo and Fe-Mn-Mo Alloys with Different Optimization Methods

Zheng, Weisen; Ågren, John; Lu, Xiao-Gang; He, Yanlin

doi:10.1007/s11661-016-3822-y

Cited by 10 publications

(2 citation statements)

References 24 publications

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“…Extracting the diffusion coefficients directly from the dual-phase diffusion couple is not straightforward. A novel direct optimization scheme developed by Zheng et al [26] was utilized in this work to extract the diffusion mobility for the hcp Mg-Ga binary phase directly from the experimental profiles of L/S diffusion couples. The scheme was coded using the MATLAB interface toolbox [26] to communicate with the Thermo-Calc and DICTRA softwares.…”

Section: Fabrication Of Liquid-solid Diffusion Couplementioning

confidence: 99%

“…A novel direct optimization scheme developed by Zheng et al [26] was utilized in this work to extract the diffusion mobility for the hcp Mg-Ga binary phase directly from the experimental profiles of L/S diffusion couples. The scheme was coded using the MATLAB interface toolbox [26] to communicate with the Thermo-Calc and DICTRA softwares. The thermodynamic parameters for Mg-Ga system employed in this work were taken from the widely accepted description assessed by Meng et al [27], that could precisely represent the experimental phase diagram and thermodynamic properties.…”

Section: Fabrication Of Liquid-solid Diffusion Couplementioning

confidence: 99%

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Exploring the correlation between solvent diffusion and creep resistance of Mg-Ga HCP alloys from high throughput liquid-solid diffusion couple

Wang

Zeng

et al. 2021

Materials & Design

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The liquid-solid diffusion couple technique, supported by phenomenological analysis and nano-indentation tests, is proposed on account of the relatively low melting points of Mg to explore the diffusion mobility and creep deformation. The potential of this strategy is demonstrated in Mg-Ga hcp alloys where Ga solute (i.e. impurity) and Mg solvent diffusions in hcp Mg-Ga alloys were both unveiled. It was followed by mapping the compressive creep behavior via nanoindentation along the composition arrays within the same Mg-Ga couple sample. The compressive creep resistance of Mg-Ga hcp alloys increased with the Ga content, and this enhancement was similar to the one found in Mg-Zn alloys and superior to the one reported in Mg-Al alloys though Al is a slower impurity diffuser in hcp-Mg than Zn and Ga. Thereby, the solvent diffusion and its variation with the composition, rather than the solute diffusion, was suggested to govern the creep properties at high temperatures and low stresses.

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Section: Fabrication Of Liquid-solid Diffusion Couplementioning

confidence: 99%