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of an advanced nickel-based superalloy, experimental and numerical studies on the cooling process were conducted. Specifically, the measurement was performed concerning both the temperature...-quench test; numerical simulation; cooling rate; heat transfer coefficient; nickel-based superalloy 1 Introduction The microstructure and mechanical performance of a metal material are significantly......
. 2 Morphology of alloy after full heat treatment 图3 有/无Ru合金经1080 ℃时效200 h的组织形貌 Fig. 3 Microstructures of Ru-containing/free single crystal nickel-based superalloys after aged... and propagation of cracks up to fracture, which is thought to be the main reason of the alloy having a lower creep resistances and shorter lifetime. Key words: single crystal nickel-based superalloy; element Ru......
, ZHANG Mai-cang, ZHENG Lei, YAO Zhi-hao. Hot deformation characteristics of Alloy 617B nickel-based superalloy: A study using processing map[J]. Journal of Alloys and Compounds, 2015, 647: 338-350. [17... H E, WILLIAMS S J, DOEL T J A, BOWEN P. Effects of microstructure on high temperature dwell fatigue crack growth in a coarse grain PM nickel based superalloy[J]. Acta Materialia, 2015, 90: 355-369......
. Based on the research, local loading method was determined to forge the TC11 alloy impeller precisely under isothermal condition. The dimensional accuracy, mechanical properties and microscopic... using pure lead was employed to study the metal flow and die structure. Based on the researches, isothermal precision forging of TC11 alloy impeller with twisted blades was carried out, microstructure......
in the regions near the sphere-like μ phase in 4.5%Re alloy, which is a main reason reducing the stress rupture lifetimes of the alloy a small extent. Key words: single crystal nickel-based superalloy...:A Precipitation behavior of TCP phase and its influence on stress rupture property of single crystal nickel-based superalloys TIAN Su-gui, QIAN Ben-jiang, LI Tang, YU Li-li, WANG Ming-gang (School......
, the creep behavior and deformation mechanism of Re-free nickel-based single crystal superalloy at intermediate temperature were investigated. The results show that the alloy displays a better creep... resistance. Key words: nickel-based single crystal superalloy; creep property; microstructure evolution; dislocation configuration; deformation mechanism 单晶镍基合金具有良好的高温力学及抗蠕变性能,现已替代传统的多晶材料,广泛应用于制作航空发动机的涡轮......
joining of nickel-based superalloys, such as laser welding [5-7], diffusion bonding [8,9] and friction welding [10-12]. Since GH99 alloy contains more elements, the high degree of alloying increases... on the substrates [16], which received great attention in joining nickel-based alloy. Recently, researches have mainly focused on the exploitation of filler alloys suitable for brazing nickel-based......
CREEP CRACK GROWTH BEHAVIOR OF ALLOY 718 DURING HIGH TEMPERATURE EXPOSURE Y.P.Zeng1,X.S.Xie1,J.X.Dong1,M.C.Zhang1 (1.Department of Material Science, University of Science and Technology Beijing, Beijing 100083,China) Abstract:Alloy 718 is a precipitation strengthened nickel-based superalloy based on the precipitation ofγ"-Ni3Nb (DO22 structure) and γ-Ni3(Al, Ti) (Ll2 structure) phases. Creep......
-based superalloy; hot compression; flow instability criterion; processing map 1 Introduction GH79 nickel-based high temperature alloy is a casting high temperature alloy. Its corresponding Russia brand... and excellent service performance. Its service temperature is raised from 750 ℃ of ЭП742 alloy to 800 ℃. At present, such nickel-based alloy has been used extensively to fabricate turbine discs......
of the alloy so that high-quality forging blanks can be obtained. The objective of this work is a new HEXed PM nickel-based superalloy. Compared to the second-generation PM nickel-based superalloys...Trans. Nonferrous Met. Soc. China 30(2020) 2709-2723 Hot working characteristics of HEXed PM nickel-based superalloy during hot compression Gang TAN1, Hui-zhong LI1, Yan WANG2,3, Lei YANG1, Shi-chang......
