Abstract
The re-containing single-crystal superalloys with different hafnium and boron additions were fabricated, and their microstructures and segregation behavior were investigated. The results indicated that the addition of hafnium and boron increase the volume fraction of γ/γ′ eutectic, and decrease the volume fraction of micropore. The solidification segregation ratio of Re, W, Mo, Al, and Ta obviously varied with hafnium and boron modified alloy. In addition, individual or simultaneous hafnium and boron additions obviously decrease the liquidus and solidus temperature as well as the incipient melting point.
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Zhang, J. et al. (2019). Influence of Minor Grain Boundary Elements on the Solidification Behavior of a Re-containing Single-Crystal Superalloy. In: Han, Y. (eds) Physics and Engineering of Metallic Materials. CMC 2018. Springer Proceedings in Physics, vol 217. Springer, Singapore. https://doi.org/10.1007/978-981-13-5944-6_70
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DOI: https://doi.org/10.1007/978-981-13-5944-6_70
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