@ARTICLE{Shang_Hang_Interface_2023, author={Shang, Hang and Gao, Qiuzhi and Jiang, Yujiao and Ma, Qingshuang and Li, Huijun and Zhang, Hailian}, volume={vol. 68}, number={No 1}, journal={Archives of Metallurgy and Materials}, pages={275-286}, howpublished={online}, year={2023}, publisher={Institute of Metallurgy and Materials Science of Polish Academy of Sciences}, publisher={Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences}, abstract={Diffusion multiple method was applied to investigate the alloying elements distribution and interface diffusion reactions in Co-Al-X system, in order to accelerate the alloy development. The diffusion regions of Co-Al-X system at 1173 K were investigated by scanning electron microscope (SEM) and nanoindentation. SEM images show that phases of Co-Al-Ni diffusion interface consisted of β-CoAl + γ Co, γ Co, γ + γ'-(Co, Ni)3Al and γ Ni, while Co-Al-Cr diffusion interface is shaped with δ + γ + β, γ and σ region. TiNiX diffusion layer with high Ni-content was formed in Co-Al-Ti diffusion interface. The diffusion layers during diffusion multiple play an important role in mechanical properties in these alloying systems. The γ + γ' diffusion layer in Co-Al-Ni diffusion interface presented the best comprehensive performance, while the highest hardness (17.48 GPa) was confirmed in Co-Al-Cr diffusion interface due to a large number of brittle phases. Darken method was applied to determine the interdiffusion coefficients of alloying elements in pseudo-binary phase, accordingly the diffusion capacities of alloying elements can be ordered as Al > Ni > Cr in Co-based alloys.}, type={Article}, title={Interface Diffusion Behavior of Co40Al-X (X = Ni, Cr, Ti) System by Diffusion Multiple}, URL={http://czasopisma.pan.pl/Content/126264/PDF/AMM-2023-1-40-Qiuzhi%20Gao.pdf}, doi={10.24425/amm.2023.141504}, keywords={Co-Al-X system, diffusion multiple, interface, diffusion, mechanical properties}, }