Partial Isothermal Sections of Phase Diagram at 750℃ and 900℃ in FeNiCr-W-Mo System

Ni Kequan; Xie Xishan; Chen Guoliang

doi:10.13374/j.issn1001-053x.1990.05.008

Volume 12 Issue 5

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Ni Kequan, Xie Xishan, Chen Guoliang. Partial Isothermal Sections of Phase Diagram at 750℃ and 900℃ in FeNiCr-W-Mo System[J]. Chinese Journal of Engineering, 1990, 12(5): 451-455. doi: 10.13374/j.issn1001-053x.1990.05.008

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Ni Kequan, Xie Xishan, Chen Guoliang. Partial Isothermal Sections of Phase Diagram at 750℃ and 900℃ in FeNiCr-W-Mo System[J]. Chinese Journal of Engineering, 1990, 12(5): 451-455. doi: 10.13374/j.issn1001-053x.1990.05.008

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Partial Isothermal Sections of Phase Diagram at 750℃ and 900℃ in FeNiCr-W-Mo System

doi: 10.13374/j.issn1001-053x.1990.05.008

Department of Material Science and Engineering

Received Date: 1989-03-07
Available Online: 2021-11-15

Abstract

Abstract

The partial isothermal sections of phase diagram at 750℃ and 900℃ in FeNiCr-W-Mo system have been determined by X-ray and TEM methods. Experimental results show, that when the content of Mo% is higher than 1.5% and 1.0% the μ phase can be formed at 750℃ and 900℃ respectively. When the content of tungsten is higher than 7% the μ and Laves phase can be formed at 900℃ in the chemical composition regime of tested alloys, however the Laves phase can not be formed at 750℃ regardless of the total amount of tungsten and molybdenum. In addition, experimental results have also proved that the traditional electron vacanr number N_v=2.30 for μ phase formation can not be vised in the investigated system.
- supcralloy,
- phase,
- phase diagron,
- clectron vacancy number