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IMPROVEMENT OF OXIDATION RESISTANCE AND MECHANICAL PROPERTIES BY THE ADDITION OF YTTRIUM AND SILICON IN A Ni_3Al BASE ALLOY IC6 被引量:4
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作者 C.B. Xiao and Y.F.Han(Beijing Institute of Aeronautical Materials (BIAM), Beijing 100095, China) 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 1998年第4期296-300,共5页
The oridation resistance at 1100°C of a dirationally solidified Ni3Al base alloy IC6is substantially improved by the addition of yttriurn or yttrium and silicon. The stress rupture property under 1100°C/80MP... The oridation resistance at 1100°C of a dirationally solidified Ni3Al base alloy IC6is substantially improved by the addition of yttriurn or yttrium and silicon. The stress rupture property under 1100°C/80MPa is increased by adding proper amounts of yttrium, howevef it decreases bg adding 0.3wt% silicon and 0. 1wt% yttrium at the same time, which may be attributed to the formation of a needle like phase rich in nickel and molybdenum. 展开更多
关键词 ni_3al yttrium silicon oxidation resistance
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EFFECT OF SILICON ON THE MICROSTRUCTURE AND MECHANICAL PROPERTIES OF YTTRIUM MODIFIED Ni_3Al BASE ALLOY IC6 被引量:1
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作者 C.B.Xiao Y.F.Han X.A.Zhang 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 1998年第6期437-441,共5页
The effect of different amounts of silicon on the microstructure of the yttrium modified Ni3Al base alloy IC6 was studied with transmission electron microscope (TEM). The chemical compositions of phases formed due to ... The effect of different amounts of silicon on the microstructure of the yttrium modified Ni3Al base alloy IC6 was studied with transmission electron microscope (TEM). The chemical compositions of phases formed due to the presence of silicon and yttrium were analyzed with energy dispersive spectrum(EDS) technique of electron probe microstructural analysis (EPMA). The results showed that a bulk shape phase rich in Mo and Si was formed in the alloys with addition of 0.10-0.20wt%Si and 0.12wt%Y, and that a needle like phase named Y-NiMo was precipitated in the interdendritic area in the alloy with addition of 0.30wt%Si and 0.12wt%Y besides the formation of the bulk shape phase mentioned above. The stress rupture properties under 1100℃/80MPa and the thermal fatigue properties at 1100℃ were improved by adding 0. 12wt%Y but decreased by adding 0.10-0.30wt%Si and 0.12wt%Y. The addition of 0. 10-0.20wt%Si and 0.12wt%Y has no obvious influence on the tensile properties of alloy IC6 at room temperature (R. T.), 760, and 900℃, respectively. 展开更多
关键词 silicon yttrium ni_3al MICROSTRUCTURE mechanical property
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YNi_5 PHASE AND ITS EFFECT UPON PROPERTIES OF Ni_3Al ALLOY
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作者 WANG Shuhe GUO Jianting LI Hui SUN Chao TAN Minghui LAI Wanhui Institute of Metal Research,Academia Sinica,Shenyang,China 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 1992年第3期183-187,共5页
An additive of Y to Ni_3Al based alloy may form a phase YNi_5 which increases in amount with the increase of Y content.It was found that the YNi_5 phase in Ni_3Al alloy could remarkably make its grains finer and its g... An additive of Y to Ni_3Al based alloy may form a phase YNi_5 which increases in amount with the increase of Y content.It was found that the YNi_5 phase in Ni_3Al alloy could remarkably make its grains finer and its grain boundaries more crooked other than straight.If the Y con- tent≥0.1 wt-%,it occurs as solid solution state and is favorable to high temperature compressive properties and oxidation resistance of the alloy.While Y≥0.3 wt-%,the forma- tion of YNi_5 is predominant in the shape of irregular strips inside Ni_3Al grains and along their grain boundaries.This seems to be quite harmful to high temperature strength,ductility and oxidation resistance of the alloy. 展开更多
关键词 ni_3al YNi_5 phase Y compressive property oxidation resistance
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一种新型Ni_(3)Al基高温耐磨合金的显微组织和性能研究
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作者 侯杰 李尚平 骆合力 《铸造》 CAS 北大核心 2023年第9期1105-1108,共4页
针对我国新一代航空发动机叶冠表面强化用高温耐磨材料的迫切需求,采用熔炼铸造法制备出一种以碳化铬和NiAl相作为耐磨硬质相的新型Ni_(3)Al基高温耐磨合金。显微组织分析、室温硬度测试、高温抗氧化性测试结果显示,两种耐磨硬质相大量... 针对我国新一代航空发动机叶冠表面强化用高温耐磨材料的迫切需求,采用熔炼铸造法制备出一种以碳化铬和NiAl相作为耐磨硬质相的新型Ni_(3)Al基高温耐磨合金。显微组织分析、室温硬度测试、高温抗氧化性测试结果显示,两种耐磨硬质相大量析出并且均匀分布于合金中。与现役的高温耐磨材料相比,该合金同时具备高的室温硬度和1050℃时优异的抗氧化性,有望成为新一代高温耐磨材料。 展开更多
关键词 Ni_(3)Al 高温耐磨合金 显微组织 硬度 抗氧化
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APPLICATION RESEARCH ON THE Ni _3 Al INTERMETALLIC COMPOUND IN CISRI
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作者 FENG Di YE Wujun +1 位作者 HAN Guangwei LUO Heli(Central Iron Steel Research Institute, Beijing 10008 1 , China) 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 1995年第Z1期503-508,共6页
Research work and recent progress made toward the industrial applications of the Ni_3Al in CISRI are discussed in present paper. The development of a Ni_3Al base alloy named MX-246 hardened by carbides and fine disper... Research work and recent progress made toward the industrial applications of the Ni_3Al in CISRI are discussed in present paper. The development of a Ni_3Al base alloy named MX-246 hardened by carbides and fine dispersion of disordered γ is summaried. This alloy,with higher peak temperature of yield strength and higher strain hardening rate than alloyIC-218,has been successfully used as the material of rolling guider at elevated temperatures and in wear conditions. The Ni3Al base alloy of GH264 has been made into welding electrodes by horizontal continuous casting process, and recently successfully surfacing welded on hydraulic blades as cavitation erosion resistance material. The process of remelting Ni3Al base alloy in air was also developed. The processes of producing welding electrodes and remelting in air set the base of industrial applications of Ni3Al in welding, repairing and casting in mass production and into components of large size. Another application of the compound, manufacturing the jet engine rivets used at about 1300℃ , can be attributed to its excellent oxidation resistance and still keeping high strength up to the melting point. 展开更多
关键词 ni_3al intermetallic compound surfacing welding CAVITATION oxidation resistance
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