Strength-ductility synergy of element Ru for Nb–Si based in-situ composites

Xiaowei Wang; Xu Wang; Qi Wang; Ruirun Chen; Yanqing Su; Hengzhi Fu

doi:10.1016/j.msea.2023.145770

Strength-ductility synergy of element Ru for Nb–Si based in-situ composites

Xiaowei Wang
, Xu Wang
, Qi Wang^*
, Ruirun Chen^*
, Yanqing Su
, Hengzhi Fu

^*Corresponding author for this work

Harbin Institute of Technology

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

Nb–Si based alloys are regarded as the most potential material to substitute the Nickel-based superalloys. The influence of Ru on comprehensive properties of Nb–16Si–24Ti alloys is researched in our paper. The results show that the Nbss phases are coarsened as the doping of Ru. Element Ru mainly dissolves in Nbss and its distribution is heterogeneous in different regions of Nbss phases. In 2Ru alloys, two-types of Nbss/Nb₅Si₃ eutectic are found due to the large supercooling degree and rapid cooling condition. The coarsened Nbss and complex Nbss/γ(Nb, X)₅Si₃ eutectic can make a positive impact of fracture toughness, and the maximum K_Q value is 8.88 MPa m^1/2 in 0.5Ru alloys. Element Ru also plays a great role of solution strengthening, and the maximum value of room compressive strength is 2012 MPa. The thermal compression tests are also prepared, the hot deformation ability signally improves, suggesting that more Ru atoms dissolve into Nbss phases and inhibit the softening of Nbss in HT condition.

Original language	English
Article number	145770
Journal	Materials Science and Engineering: A
Volume	887
DOIs	https://doi.org/10.1016/j.msea.2023.145770
State	Published - 6 Nov 2023
Externally published	Yes

Keywords

Element Ru
Fracture toughness
Hot deformation behavior
Nb–Si based alloys

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10.1016/j.msea.2023.145770

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title = "Strength-ductility synergy of element Ru for Nb{\textendash}Si based in-situ composites",

abstract = "Nb{\textendash}Si based alloys are regarded as the most potential material to substitute the Nickel-based superalloys. The influence of Ru on comprehensive properties of Nb{\textendash}16Si{\textendash}24Ti alloys is researched in our paper. The results show that the Nbss phases are coarsened as the doping of Ru. Element Ru mainly dissolves in Nbss and its distribution is heterogeneous in different regions of Nbss phases. In 2Ru alloys, two-types of Nbss/Nb5Si3 eutectic are found due to the large supercooling degree and rapid cooling condition. The coarsened Nbss and complex Nbss/γ(Nb, X)5Si3 eutectic can make a positive impact of fracture toughness, and the maximum KQ value is 8.88 MPa m1/2 in 0.5Ru alloys. Element Ru also plays a great role of solution strengthening, and the maximum value of room compressive strength is 2012 MPa. The thermal compression tests are also prepared, the hot deformation ability signally improves, suggesting that more Ru atoms dissolve into Nbss phases and inhibit the softening of Nbss in HT condition.",

keywords = "Element Ru, Fracture toughness, Hot deformation behavior, Nb{\textendash}Si based alloys",

author = "Xiaowei Wang and Xu Wang and Qi Wang and Ruirun Chen and Yanqing Su and Hengzhi Fu",

note = "Publisher Copyright: {\textcopyright} 2023 Elsevier B.V.",

year = "2023",

month = nov,

day = "6",

doi = "10.1016/j.msea.2023.145770",

language = "英语",

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journal = "Materials Science and Engineering: A",

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T1 - Strength-ductility synergy of element Ru for Nb–Si based in-situ composites

AU - Wang, Xiaowei

AU - Wang, Xu

AU - Wang, Qi

AU - Chen, Ruirun

AU - Su, Yanqing

AU - Fu, Hengzhi

PY - 2023/11/6

Y1 - 2023/11/6

N2 - Nb–Si based alloys are regarded as the most potential material to substitute the Nickel-based superalloys. The influence of Ru on comprehensive properties of Nb–16Si–24Ti alloys is researched in our paper. The results show that the Nbss phases are coarsened as the doping of Ru. Element Ru mainly dissolves in Nbss and its distribution is heterogeneous in different regions of Nbss phases. In 2Ru alloys, two-types of Nbss/Nb5Si3 eutectic are found due to the large supercooling degree and rapid cooling condition. The coarsened Nbss and complex Nbss/γ(Nb, X)5Si3 eutectic can make a positive impact of fracture toughness, and the maximum KQ value is 8.88 MPa m1/2 in 0.5Ru alloys. Element Ru also plays a great role of solution strengthening, and the maximum value of room compressive strength is 2012 MPa. The thermal compression tests are also prepared, the hot deformation ability signally improves, suggesting that more Ru atoms dissolve into Nbss phases and inhibit the softening of Nbss in HT condition.

AB - Nb–Si based alloys are regarded as the most potential material to substitute the Nickel-based superalloys. The influence of Ru on comprehensive properties of Nb–16Si–24Ti alloys is researched in our paper. The results show that the Nbss phases are coarsened as the doping of Ru. Element Ru mainly dissolves in Nbss and its distribution is heterogeneous in different regions of Nbss phases. In 2Ru alloys, two-types of Nbss/Nb5Si3 eutectic are found due to the large supercooling degree and rapid cooling condition. The coarsened Nbss and complex Nbss/γ(Nb, X)5Si3 eutectic can make a positive impact of fracture toughness, and the maximum KQ value is 8.88 MPa m1/2 in 0.5Ru alloys. Element Ru also plays a great role of solution strengthening, and the maximum value of room compressive strength is 2012 MPa. The thermal compression tests are also prepared, the hot deformation ability signally improves, suggesting that more Ru atoms dissolve into Nbss phases and inhibit the softening of Nbss in HT condition.

KW - Element Ru

KW - Fracture toughness

KW - Hot deformation behavior

KW - Nb–Si based alloys

UR - https://www.scopus.com/pages/publications/85172989604

U2 - 10.1016/j.msea.2023.145770

DO - 10.1016/j.msea.2023.145770

M3 - 文章

AN - SCOPUS:85172989604

SN - 0921-5093

VL - 887

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

M1 - 145770

ER -

Strength-ductility synergy of element Ru for Nb–Si based in-situ composites

Abstract

Keywords

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