The 773 K isothermal section of the ternary phase diagram of the Nb–Ti–Si system

Zhan, Yongzhong; Sun, Zan; Jiang, Jianjuan; Ma, Jianbo; Zhang, Xinjiang; Zhuang, Yinghong

doi:10.1016/j.jallcom.2008.01.009

Cited by 12 publications

(4 citation statements)

References 15 publications

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“…Furthermore, Nb-Si and Ti-Si systems are analogous, and their Ti 3 Si and Nb 3 Si phases are isomorphous (Zhan et al, 2009;Xu et al, 2005). However their existence temperatures are different; Nb 3 Si is stable in the temperature range from 1700ºC to 1980ºC, whereas Ti 3 Si is stable at lower temperatures (<1170 ºC) (Zhan et al, 2009).…”

Section: Microstructural Characterizationmentioning

confidence: 99%

“…However their existence temperatures are different; Nb 3 Si is stable in the temperature range from 1700ºC to 1980ºC, whereas Ti 3 Si is stable at lower temperatures (<1170 ºC) (Zhan et al, 2009). Considering this circumstance, when Nb is a solid solution in Ti 3 Si, it is referred to as (Ti,Nb) 3 Si (Xu et al, 2005).…”

Section: Microstructural Characterizationmentioning

confidence: 99%

See 1 more Smart Citation

Influence of Si addition on the microstructure and mechanical properties of Ti–35Nb alloy for applications in orthopedic implants

Tavares

Ramos

Blas

et al. 2015

Journal of the Mechanical Behavior of Biomedical Materials

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Section: Microstructural Characterizationmentioning

confidence: 99%

Section: Microstructural Characterizationmentioning

confidence: 99%

Influence of Si addition on the microstructure and mechanical properties of Ti–35Nb alloy for applications in orthopedic implants

Tavares

Ramos

Blas

et al. 2015

Journal of the Mechanical Behavior of Biomedical Materials

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“…Recently, we reported the phase equilibria of the La-Ti-Si [1], Zr-Ti-Si [2], Nb-Ti-Si [3] and Gd-Ti-Si [4] systems by means of experimental methods.…”

Section: Introductionmentioning

confidence: 99%

The isothermal section of the Pr–Ti–Si ternary system at 773K

Zhan

Liu

et al. 2009

Journal of Alloys and Compounds

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“…The Ti 5 Si 3 , CrSi 2 , and Cr 5 Si 3 silicides exhibit solubilities for third elements [37]. The solubility of Nb in Ti 5 Si 3 and Cr 5 Si 3 has been reported in previous studies [40,41,42,43]. Solubility of 23 at.% Nb in the Ti 5 Si 3 has been reported in the temperature range 500 to 1200 °C, and no Nb solubility in the Cr 5 Si 3 .…”

Section: Discussionmentioning

confidence: 78%

On the Microstructure and Isothermal Oxidation of the Si-22Fe-12Cr-12Al-10Ti-5Nb (at.%) Alloy

Hernández-Negrete

Tsakiropoulos

2019

Materials

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Nb-silicide based alloys are new ultra-high temperature materials that could replace Ni-based superalloys. Environmentally resistant coating system (s) with αAl2O3 or SiO2 forming bond coat alloys that are chemically compatible with the Nb-silicide based alloy substrates are needed. This paper makes a contribution to the search for non-pesting bond coat alloys. The microstructure and isothermal oxidation at 800 °C of the silicide-based alloy Si-22Fe-12Cr-12Al-10Ti-5Nb (OHC2) were studied. The cast alloy exhibited macrosegregation of all elements. The microstructures in the cast alloy and after the heat treatment at 800 °C consisted of the same phases, namely TM6Si5, TM5Si3 (TM = transition metal), FeSi2Ti, Fe3Al2Si3, (Fe,Cr)(Si,Al), and an unknown phase of dark contrast. The latter two phases were not stable at 950 °C, where the TMSi2 was formed. There was evidence of endothermic reaction(s) below 1200 °C and liquation at 1200 °C. The alloy followed parabolic oxidation kinetics after the first hour of isothermal oxidation at 800 °C, did not pest, and formed a self-healing scale, in which the dominant oxide was Al2O3. The alloy was compared with other alumina or silica scale-forming intermetallic alloys and approaches to the design of bond coat alloys were suggested.

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The 773 K isothermal section of the ternary phase diagram of the Nb–Ti–Si system

Cited by 12 publications

References 15 publications

Influence of Si addition on the microstructure and mechanical properties of Ti–35Nb alloy for applications in orthopedic implants

Influence of Si addition on the microstructure and mechanical properties of Ti–35Nb alloy for applications in orthopedic implants

The isothermal section of the Pr–Ti–Si ternary system at 773K

On the Microstructure and Isothermal Oxidation of the Si-22Fe-12Cr-12Al-10Ti-5Nb (at.%) Alloy

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