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. 2022 Apr 12;15(8):2832. doi: 10.3390/ma15082832

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© 2022 by the author.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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(a,b) Vickers hardness of alloyed Nb₅Si₃ versus VEC. (a) Silicide in boron-free RM(Nb)ICs, triangles and square in RM(Nb)ICs with Ge or Sn addition, respectively (b) Silicide in boron containing RM(Nb)ICs (diamonds), of which those that also are RM(Nb)ICs/RCCAs are shown in red. (c) Change of creep rate (Δlnέ) versus VEC at 1200 °C and 150 MPa with reference the binary Nb₅Si₃, data from [1,9]. Colours in (c): tetragonal unalloyed Nb₅Si₃ (red square), tetragonal (Nb,Ti)₅Si₃ (blue square), tetragonal (Nb,Ti,Cr,Hf)₅(Si,Al,B)₃ (green square) and hexagonal (Nb,Ti)₅Si₃ and (Nb,Ti,Hf)₅Si₃ (blue diamonds). The more negative Δlnέ is, the higher is the creep rate compared with αNb₅Si₃ at the said conditions.

(a,b) Vickers hardness of alloyed Nb₅Si₃ versus VEC. (a) Silicide in boron-free RM(Nb)ICs, triangles and square in RM(Nb)ICs with Ge or Sn addition, respectively (b) Silicide in boron containing RM(Nb)ICs (diamonds), of which those that also are RM(Nb)ICs/RCCAs are shown in red. (c) Change of creep rate (Δlnέ) versus VEC at 1200 °C and 150 MPa with reference the binary Nb₅Si₃, data from [1,9]. Colours in (c): tetragonal unalloyed Nb₅Si₃ (red square), tetragonal (Nb,Ti)₅Si₃ (blue square), tetragonal (Nb,Ti,Cr,Hf)₅(Si,Al,B)₃ (green square) and hexagonal (Nb,Ti)₅Si₃ and (Nb,Ti,Hf)₅Si₃ (blue diamonds). The more negative Δlnέ is, the higher is the creep rate compared with αNb₅Si₃ at the said conditions.